In this post we will looking at Illinois and its territories, Its past and present governors and current House of representative’s members.
INTRODUCTION.
is a state in the Midwestern United States. Chicago is its largest city, and the state’s capital is Springfield; other major metropolitan areas include Metro East (of Greater St. Louis), Peoria and Rockford. Of the fifty U.S. states, Illinois has the fifth largest gross domestic product (GDP), the sixth largest population, and the 25th largest land area. With Chicago in the northeast, small industrial cities and immense farmland in the north and center, and natural resources such as coal, timber, and petroleum in the south, Illinois has a highly diverse economy. Owing to its central location and geography, the state is a major transportation hub: the Port of Chicago enjoys access to the Atlantic Ocean through the Great Lakes and Saint Lawrence Seaway, and to the Gulf of Mexico from the Mississippi River via the Illinois Waterway. Additionally, the Mississippi, Ohio, and Wabash rivers form parts of the state’s boundaries. Chicago’s O’Hare International Airport has been among the world’s ten busiest airports for decades. Described as a microcosm of the entire United States, Illinois has long been considered a bellwether in social, cultural, and political terms. What is now Illinois was inhabited for thousands of years by various indigenous cultures, including the advanced civilization centered in the Cahokia region. The French were the first Europeans to arrive, settling near the Mississippi River in the 17th century, in the region they called Illinois Country, part of the sprawling colony of New France. Following U.S. independence in 1783, American settlers began arriving from Kentucky via the Ohio River, and the population grew from south to north. Illinois was part of the United States’ oldest territory, the Northwest Territory, and in 1818 it achieved statehood. The Erie Canal brought increased commercial activity in the Great Lakes, and the small settlement of Chicago became one of the fastest growing cities in the world, benefiting from its location as one of the few natural harbors in south-western Lake Michigan. The invention of the self-scouring steel plow by Illinoian John Deere turned the state’s rich prairie into some of the world’s most productive and valuable farmland, attracting immigrant farmers from Germany and Sweden. In the mid-19th century, the Illinois and Michigan Canal and a sprawling railroad network greatly facilitated trade, commerce, and settlement, making the state a transportation hub for the nation. By 1900, the growth of industrial jobs in the northern cities, and coal mining in the central and southern areas, attracted immigrants from Eastern and Southern Europe. As one of America’s most industrialized states, Illinois is a manufacturing center, which was especially important during both of the 20th century´s world wars. The Great Migration from the South established a large community of African Americans in the state, particularly Chicago, who founded the city’s famous jazz and blues cultures. Chicago, which became one of the country’s leading cultural, economic, and population centers, is a global city; its metropolitan area of Chicagoland encompasses about 65% of the state’s population. Three U.S. presidents have been elected while living in Illinois: Abraham Lincoln, Ulysses S. Grant, and Barack Obama; additionally, Ronald Reagan, whose political career was based in California, was born and raised in the state. Today, Illinois honors Lincoln with its official state slogan Land of Lincoln, which has been displayed on its license plates since 1954. The state is the site of the Abraham Lincoln Presidential Library and Museum in Springfield and the future home of the Barack Obama Presidential Center in Chicago.
ILLINOIS TERRITORIES.
Illinois has three major geographical divisions. Northern Illinois is dominated by Chicago metropolitan area, or Chicagoland, which is the city of Chicago and its suburbs, and the adjoining exurban area into which the metropolis is expanding. As defined by the federal government, the Chicago metro area includes several counties in Illinois, Indiana, and Wisconsin, and has a population of over 9.8 million. Chicago itself is a cosmopolitan city, densely populated, industrialized, the transportation hub of the nation, and settled by a wide variety of ethnic groups. The city of Rockford, Illinois’s third-largest city and center of the state’s fourth largest metropolitan area, sits along Interstates 39 and 90 some 75 mi (121 km) northwest of Chicago. The Quad Cities region, located along the Mississippi River in northern Illinois, had a population of 381,342 in 2011. The midsection of Illinois is the second major division, called Central Illinois. Historically prairie, it is now mainly agricultural and known as the Heart of Illinois. It is characterized by small towns and medium–small cities. The western section (west of the Illinois River) was originally part of the Military Tract of 1812 and forms the conspicuous western bulge of the state. Agriculture, particularly corn and soybeans, as well as educational institutions and manufacturing centers, figure prominently in Central Illinois. Cities include Peoria; Springfield, the state capital; Quincy; Decatur; Bloomington-Normal; and Champaign-Urbana. The third division is Southern Illinois, comprising the area south of U.S. Route 50, including Little Egypt, near the juncture of the Mississippi River and Ohio River. Southern Illinois is the site of the ancient city of Cahokia, as well as the site of the first state capital at Kaskaskia, which today is separated from the rest of the state by the Mississippi River.[ This region has a somewhat warmer winter climate, different variety of crops (including some cotton farming in the past), more rugged topography (due to the area remaining unglaciated during the Illinoian Stage, unlike most of the rest of the state), as well as small-scale oil deposits and coal mining. The Illinois suburbs of St. Louis, such as East St. Louis, are located in this region, and collectively, they are known as the Metro-East. The other somewhat significant concentration of population in Southern Illinois is the Carbondale-Marion-Herrin, Illinois Combined Statistical Area centered on Carbondale and Marion, a two-county area that is home to 123,272 residents. A portion of southeastern Illinois is part of the extended Evansville, Indiana, Metro Area, locally referred to as the Tri-State with Indiana and Kentucky. Seven Illinois counties are in the area. In addition to these three, largely latitudinally defined divisions, all of the region outside the Chicagoland area is often called “downstate” Illinois. This term is flexible, but is generally meant to mean everything outside the influence of the Chicago area. Thus, some cities in Northern Illinois, such as DeKalb, which is west of Chicago, and Rockford—which is actually north of Chicago—are sometimes incorrectly considered to be ‘downstate’
LIST OF GOVERNORS AND HOUSE OF REPRESENTATIVE’S MEMBERS.
Since becoming a state in 1818, 43 people have served as governor of Illinois; before statehood, it had only 1 territorial governor, Ninian Edwards. The longest-serving governor was James R. Thompson, who was elected to four terms lasting 14 years, from 1977 to 1991. Only one governor, Richard J. Oglesby, has served multiple separate terms, having been elected in 1864, 1872, and 1884.
| Governor of the Territory of Illinois | |||
| Portrait | Governor | Term in office | Appointed by |
| Ninian Edwards March 17, 1775 – July 20, 1833 (aged 58) | March 1, 1809 – October 6, 1818 | Thomas Jefferson |
Governors of the State of Illinois
Illinois was admitted to the Union on December 3, 1818, consisting of the southern portion of Illinois Territory; the remainder was assigned to Michigan Territory.The first Illinois Constitution, ratified in 1818, provided that a governor be elected every 4 years for a term starting on the first Monday in the December following an election. The constitution of 1848 moved the start of the term to the second Monday in January starting in 1849, thus shortening the term won in the 1844 election to 2 years. Governors were not allowed to succeed themselves until the 1870 constitution, which removed this limit.
| Governors of the State of Illinois | |||||||||
| No.[a] | Governor | Term in office | Party | Election | Lt. Governor[b][c] | ||||
| 1 | Shadrach Bond November 30, 1773 – April 12, 1832 (aged 58) | October 6, 1818 – December 5, 1822 (term limited) | Independent | 1818 | Pierre Menard | ||||
| 2 | Edward Coles December 15, 1786 – July 7, 1868 (aged 81) | December 5, 1822 – December 6, 1826 (term limited) | Independent | 1822 | Adolphus Hubbard | ||||
| 3 | Ninian Edwards March 17, 1775 – July 20, 1833 (aged 58) | December 6, 1826 – December 6, 1830 (term limited) | Adams-Clay Republican | 1826 | William Kinney | ||||
| 4 | John Reynolds February 26, 1788 – May 8, 1865 (aged 77) | December 6, 1830 – November 17, 1834 (resigned)[d] | National Republican | 1830 | Zadok Casey (resigned March 1, 1833) | ||||
| William Lee D. Ewing (acting) | |||||||||
| 5 | William Lee D. Ewing August 31, 1795 – March 25, 1846 (aged 50) | November 17, 1834 – December 3, 1834 (successor took office) | Democratic | Lieutenant Governor acting as Governor | Vacant | ||||
| 6 | Joseph Duncan February 22, 1794 – January 15, 1844 (aged 49) | December 3, 1834 – December 7, 1838 (term limited) | Whig | 1834 | Alexander M. Jenkins[e] (resigned December 9, 1836) | ||||
| William H. Davidson[e] (acting) | |||||||||
| 7 | Thomas Carlin July 18, 1789 – February 14, 1852 (aged 62) | December 7, 1838 – December 8, 1842 (term limited) | Democratic | 1838 | Stinson Anderson | ||||
| 8 | Thomas Ford December 5, 1800 – November 3, 1850 (aged 49) | December 8, 1842 – December 9, 1846 (term limited) | Democratic | 1842 | John Moore | ||||
| 9 | Augustus C. French August 2, 1808 – September 4, 1864 (aged 56) | December 9, 1846 – January 10, 1853 (term limited) | Democratic | 1846[f] | Joseph Wells | ||||
| 1848 | William McMurtry | ||||||||
| 10 | Joel Aldrich Matteson August 8, 1808 – January 31, 1873 (aged 64) | January 10, 1853 – January 12, 1857 (term limited) | Democratic | 1852 | Gustav Koerner | ||||
| 11 | William Henry Bissell April 25, 1811 – March 18, 1860 (aged 48) | January 12, 1857 – March 18, 1860 (died in office) | Republican | 1856 | John Wood | ||||
| 12 | John Wood December 20, 1798 – June 4, 1880 (aged 81) | March 18, 1860 – January 14, 1861 (not candidate for election) | Republican | Lieutenant Governor acting as Governor | Thomas Marshall[e] (acting) | ||||
| 13 | Richard Yates January 18, 1815 – November 27, 1873 (aged 58) | January 14, 1861 – January 16, 1865 (term limited) | Republican | 1860 | Francis Hoffmann | ||||
| 14 | Richard J. Oglesby July 25, 1824 – April 24, 1899 (aged 74) | January 16, 1865 – January 11, 1869 (term limited) | Republican | 1864 | William Bross | ||||
| 15 | John M. Palmer September 13, 1817 – September 25, 1900 (aged 83) | January 11, 1869 – January 13, 1873 (not candidate for election) | Republican | 1868 | John Dougherty | ||||
| 14 | Richard J. Oglesby July 25, 1824 – April 24, 1899 (aged 74) | January 13, 1873 – January 23, 1873 (resigned)[g] | Republican | 1872 | John Lourie Beveridge | ||||
| 16 | John Lourie Beveridge July 6, 1824 – May 3, 1910 (aged 85) | January 23, 1873 – January 8, 1877 (not candidate for election) | Republican | Lieutenant Governor acting as Governor | John Early (acting) (term ended January 8, 1875) | ||||
| Archibald A. Glenn[e] (acting) | |||||||||
| 17 | Shelby Moore Cullom November 22, 1829 – January 28, 1914 (aged 84) | January 8, 1877 – February 5, 1883 (resigned)[h] | Republican | 1876 | Andrew Shuman | ||||
| 1880 | John Marshall Hamilton | ||||||||
| 18 | John Marshall Hamilton May 28, 1847 – September 22, 1905 (aged 58) | February 5, 1883 – January 30, 1885 (not candidate for election) | Republican | Lieutenant Governor acting as Governor | William J. Campbell (acting) | ||||
| 14 | Richard J. Oglesby July 25, 1824 – April 24, 1899 (aged 74) | January 30, 1885 – January 14, 1889 (not candidate for election) | Republican | 1884 | John C. Smith | ||||
| 19 | Joseph W. Fifer October 28, 1840 – August 6, 1938 (aged 97) | January 14, 1889 – January 10, 1893 (lost election) | Republican | 1888 | Lyman Beecher Ray | ||||
| 20 | John Peter Altgeld December 30, 1847 – March 12, 1902 (aged 54) | January 10, 1893 – January 11, 1897 (lost election) | Democratic | 1892 | Joseph B. Gill | ||||
| 21 | John Riley Tanner April 4, 1844 – May 23, 1901 (aged 57) | January 11, 1897 – January 14, 1901 (not candidate for election) | Republican | 1896 | William Northcott | ||||
| 22 | Richard Yates Jr. December 12, 1860 – April 11, 1936 (aged 75) | January 14, 1901 – January 9, 1905 (not candidate for election) | Republican | 1900 | |||||
| 23 | Charles S. Deneen May 4, 1863 – February 5, 1940 (aged 69) | January 9, 1905 – February 3, 1913 (lost election) | Republican | 1904 | Lawrence Yates Sherman | ||||
| 1908 | John G. Oglesby | ||||||||
| 24 | Edward Fitzsimmons Dunne October 12, 1853 – May 24, 1937 (aged 83) | February 3, 1913 – January 8, 1917 (lost election) | Democratic | 1912 | Barratt O’Hara | ||||
| 25 | Frank Orren Lowden January 26, 1861 – March 20, 1943 (aged 82) | January 8, 1917 – January 10, 1921 (not candidate for election) | Republican | 1916 | John G. Oglesby | ||||
| 26 | Len Small June 16, 1862 – May 17, 1936 (aged 73) | January 10, 1921 – January 14, 1929 (not candidate for election) | Republican | 1920 | Fred E. Sterling | ||||
| 1924 | |||||||||
| 27 | Louis Lincoln Emmerson December 27, 1863 – February 4, 1941 (aged 77) | January 14, 1929 – January 9, 1933 (not candidate for election) | Republican | 1928 | |||||
| 28 | Henry Horner November 30, 1878 – October 6, 1940 (aged 61) | January 9, 1933 – October 6, 1940 (died in office) | Democratic | 1932 | Thomas Donovan | ||||
| 1936 | John Henry Stelle | ||||||||
| 29 | John Henry Stelle August 10, 1891 – July 5, 1962 (aged 70) | October 6, 1940 – January 13, 1941 (not candidate for election) | Democratic | Lieutenant Governor acting as Governor | Vacant | ||||
| 30 | Dwight H. Green January 9, 1897 – February 20, 1958 (aged 61) | January 13, 1941 – January 10, 1949 (lost election) | Republican | 1940 | Hugh W. Cross | ||||
| 1944 | |||||||||
| 31 | Adlai Stevenson II February 5, 1900 – July 14, 1965 (aged 65) | January 10, 1949 – January 12, 1953 (not candidate for election) | Democratic | 1948 | Sherwood Dixon | ||||
| 32 | William Stratton February 26, 1914 – March 2, 2001 (aged 87) | January 12, 1953 – January 9, 1961 (lost election) | Republican | 1952 | John William Chapman | ||||
| 1956 | |||||||||
| 33 | Otto Kerner Jr. August 15, 1908 – May 9, 1976 (aged 67) | January 9, 1961 – May 21, 1968 (resigned)[i] | Democratic | 1960 | Samuel H. Shapiro | ||||
| 1964 | |||||||||
| 34 | Samuel H. Shapiro April 25, 1907 – March 16, 1987 (aged 79) | May 21, 1968 – January 13, 1969 | Democratic | Lieutenant Governor acting as Governor | Vacant | ||||
| 35 | Richard B. Ogilvie February 22, 1923 – May 10, 1988 (aged 65) | January 13, 1969 – January 8, 1973 (lost election) | Republican | 1968 | Paul Simon[e] | ||||
| 36 | Dan Walker August 6, 1922 – April 29, 2015 (aged 92) | January 8, 1973 – January 10, 1977 (not candidate for election) | Democratic | 1972 | Neil Hartigan | ||||
| 37 | James R. Thompson May 8, 1936 – August 14, 2020 (aged 84) | January 10, 1977 – January 14, 1991 (not candidate for election) | Republican | 1976[j] | Dave O’Neal (resigned July 31, 1981) | ||||
| 1978 | |||||||||
| Vacant | |||||||||
| 1982 | George Ryan | ||||||||
| 1986 | |||||||||
| 38 | Jim Edgar July 22, 1946 (age 75) | January 14, 1991 – January 11, 1999 (not candidate for election) | Republican | 1990 | Bob Kustra (resigned July 1, 1998) | ||||
| 1994 | |||||||||
| Vacant | |||||||||
| 39 | George Ryan February 24, 1934 (age 88) | January 11, 1999 – January 13, 2003 (not candidate for election) | Republican | 1998 | Corinne Wood | ||||
| 40 | Rod Blagojevich December 10, 1956 (age 65) | January 13, 2003 – January 29, 2009 (impeached and removed)[k] | Democratic | 2002 | Pat Quinn | ||||
| 2006 | |||||||||
| 41 | Pat Quinn December 16, 1948 (age 73) | January 29, 2009 – January 12, 2015 (lost election) | Democratic | Succeeded from Lieutenant Governor | Vacant | ||||
| 2010 | Sheila Simon | ||||||||
| 42 | Bruce Rauner February 18, 1956 (age 66) | January 12, 2015 – January 14, 2019 (lost election) | Republican | 2014 | Evelyn Sanguinetti | ||||
| 43 | J. B. Pritzker January 19, 1965 (age 57) | January 14, 2019 – Incumbent[l] | Democratic | 2018 | Juliana Stratton |
MEMBERS OF REPRESENTATIVES TO THE U.S. HOUSE FROM ILLINOIS
The following is an alphabetical list of members of the United States House of Representatives from the state of Illinois. For chronological tables of members of both houses of the United States Congress from the state (through the present day), see United States congressional delegations from Illinois. The list of names should be complete as of January 3, 2019, but other data may be incomplete. Illinois became the 21st state on December 3, 1818.
LIST OF MEMBERS AND DELEGATES
| Member / Delegate | Party | District | Years | Electoral history |
| J. Leroy Adair | Democratic | 15th | March 4, 1933 – January 3, 1937 | |
| George E. Adams | Republican | 4th | March 4, 1883 – March 4, 1891 | |
| Charles Adkins | Republican | 19th | March 4, 1925 – March 4, 1933 | |
| J. Frank Aldrich | Republican | 1st | March 4, 1893 – March 4, 1897 | |
| William Aldrich | Republican | 1st | March 4, 1877 – March 4, 1883 | |
| James C. Allen | Democratic | 7th | March 4, 1853 – July 18, 1856 | House declared not entitled to seat |
| November 4, 1856 – March 4, 1857 | Re-elected to fill own vacancy | |||
| At-large | March 4, 1863 – March 4, 1865 | |||
| John Clayton Allen | Republican | 14th | March 4, 1925 – March 4, 1933 | |
| Leo E. Allen | Republican | 13th | March 4, 1933 – January 3, 1949 | |
| 16th | January 3, 1949 – January 3, 1961 | |||
| William J. Allen | Democratic | 9th | June 2, 1862 – March 4, 1863 | |
| 13th | March 4, 1863 – March 4, 1865 | |||
| Willis Allen | Democratic | 2nd | March 4, 1851 – March 4, 1853 | |
| 9th | March 4, 1853 – March 4, 1855 | |||
| George A. Anderson | Democratic | 12th | March 4, 1887 – March 4, 1889 | |
| John B. Anderson | Republican | 16th | January 3, 1961 – January 3, 1981 | |
| William B. Anderson | Independent | 19th | March 4, 1875 – March 4, 1877 | |
| Frank Annunzio | Democratic | 7th | January 3, 1965 – January 3, 1973 | |
| 11th | January 3, 1973 – January 3, 1993 | |||
| Leslie C. Arends | Republican | 17th | January 3, 1935 – January 3, 1973 | |
| 15th | January 3, 1973 – December 31, 1974 | Resigned | ||
| Isaac N. Arnold | Republican | 2nd | March 4, 1861 – March 4, 1863 | |
| 1st | March 4, 1863 – March 4, 1865 | |||
| Laurence F. Arnold | Democratic | 23rd | January 3, 1937 – January 3, 1943 | |
| William W. Arnold | Democratic | 23rd | March 4, 1923 – September 16, 1935 | Resigned to become a member of the US Board of Tax Appeals |
| John C. Bagby | Democratic | 10th | March 4, 1875 – March 4, 1877 | [data unknown/missing] |
| Edward D. Baker | Whig | 7th | March 4, 1845 – January 15, 1847 | Resigned after being commissioned colonel of the 4th Regiment of the Illinois Volunteer Infantry |
| 6th | March 4, 1849 – March 4, 1851 | |||
| Jehu Baker | Republican | 12th | March 4, 1865 – March 4, 1869 | |
| 18th | March 4, 1887 – March 4, 1889 | |||
| Democratic | 21st | March 4, 1897 – March 4, 1899 | ||
| William N. Baltz | Democratic | 22nd | March 4, 1913 – March 4, 1915 | |
| Hiram Barber Jr. | Republican | 3rd | March 4, 1879 – March 4, 1881 | |
| James M. Barnes | Democratic | 20th | January 3, 1939 – January 3, 1943 | |
| Granville Barrere | Republican | 9th | March 4, 1873 – March 4, 1875 | |
| Harry P. Beam | Democratic | 4th | March 4, 1931 – December 6, 1942 | Resigned after being elected judge of the Municipal Court of Chicago |
| Melissa Bean | Democratic | 8th | January 3, 2005 – January 3, 2011 | |
| Hugh R. Belknap | Republican | 3rd | December 27, 1895 – March 4, 1899 | Won contested election |
| John Lourie Beveridge | Republican | At-large | November 7, 1871 – January 4, 1873 | Resigned to become Lieutenant Governor |
| Judy Biggert | Republican | 13th | January 3, 1999 – January 3, 2013 | |
| C. W. Bishop | Republican | 25th | January 3, 1941 – January 3, 1949 | |
| 26th | January 3, 1949 – January 3, 1953 | |||
| 25th | January 3, 1953 – January 3, 1955 | |||
| William H. Bissell | Democratic | 1st | March 4, 1849 – March 4, 1853 | |
| Independent Democratic | 8th | March 4, 1853 – March 4, 1855 | ||
| John C. Black | Democratic | At-large | March 4, 1893 – January 12, 1895 | Resigned to become U.S. Attorney |
| Rod R. Blagojevich | Democratic | 5th | January 3, 1997 – January 3, 2003 | |
| Shadrack Bond | Democratic-Republican | Territory | December 3, 1812 – August 2, 1813 | |
| Charles M. Borchers | Democratic | 19th | March 4, 1913 – March 4, 1915 | |
| Mike Bost | Republican | 12th | January 3, 2015 – Present | Incumbent |
| Henry S. Boutell | Republican | 6th | November 23, 1897 – March 4, 1903 | |
| 9th | March 4, 1903 – March 4, 1911 | |||
| James B. Bowler | Democratic | 7th | July 7, 1953 – July 18, 1957 | Died |
| Thomas A. Boyd | Republican | 9th | March 4, 1877 – March 4, 1881 | |
| Lewis L. Boyer | Democratic | 15th | January 3, 1937 – January 3, 1939 | |
| Charles A. Boyle | Democratic | 12th | January 3, 1955 – November 4, 1959 | Died |
| Martin A. Brennan | Democratic | At-large | March 4, 1933 – January 3, 1937 | |
| Lorenzo Brentano | Republican | 3rd | March 4, 1877 – March 4, 1879 | |
| Frederick A. Britten | Republican | 9th | March 4, 1913 – January 3, 1935 | |
| Henry P.H. Bromwell | Republican | 7th | March 4, 1865 – March 4, 1869 | |
| Edwin B. Brooks | Republican | 23rd | March 4, 1919 – March 4, 1923 | |
| Terry L. Bruce | Democratic | 19th | January 3, 1985 – January 3, 1993 | |
| Frank Buchanan | Democratic | 7th | March 4, 1911 – March 4, 1917 | |
| John T. Buckbee | Republican | 12th | March 4, 1927 – April 23, 1936 | Died |
| James R. Buckley | Democratic | 6th | March 4, 1923 – March 4, 1925 | |
| James V. Buckley | Democratic | 4th | January 3, 1949 – January 3, 1951 | |
| Horatio C. Burchard | Republican | 3rd | December 6, 1869 – March 4, 1873 | |
| 5th | March 4, 1873 – March 4, 1879 | |||
| Albert G. Burr | Democratic | 10th | March 4, 1867 – March 4, 1871 | |
| Orlando Burrell | Republican | 20th | March 4, 1895 – March 4, 1897 | |
| Fred E. Busbey | Republican | 3rd | January 3, 1943 – January 3, 1945 | |
| Samuel T. Busey | Democratic | 15th | March 4, 1891 – March 4, 1893 | |
| Cheri Bustos | Democratic | 17th | January 3, 2013 – Present | Incumbent |
| Emmet F. Byrne | Republican | 3rd | January 3, 1957 – January 3, 1959 | |
| Benjamin T. Cable | Democratic | 11th | March 4, 1891 – March 4, 1893 | |
| Ben F. Caldwell | Democratic | 17th | March 4, 1899 – March 4, 1903 | |
| 21st | March 4, 1903 – March 4, 1905 | |||
| March 4, 1907 – March 4, 1909 | ||||
| Alexander Campbell | Independent | 7th | March 4, 1875 – March 4, 1877 | |
| James R. Campbell | Democratic | 20th | March 4, 1897 – March 4, 1899 | |
| Thompson Campbell | Democratic | 6th | March 4, 1851 – March 4, 1853 | |
| Joseph G. Cannon | Republican | 14th | March 4, 1873 – March 4, 1883 | |
| 15th | March 4, 1883 – March 4, 1891 | |||
| March 4, 1893 – March 4, 1895 | ||||
| 12th | March 4, 1895 – March 4, 1903 | |||
| 18th | March 4, 1903 – March 4, 1913 | |||
| March 4, 1915 – March 4, 1923 | ||||
| Cliffard D. Carlson | Republican | 15th | April 4, 1972 – January 3, 1973 | |
| Zadok Casey | Jacksonian | 2nd | March 4, 1833 – March 4, 1837 | |
| Democratic | March 4, 1837 – March 4, 1841 | |||
| Independent Democratic | March 4, 1841 – March 4, 1843 | |||
| Sean Casten | Democratic | 6th | January 3, 2019 – Present | Incumbent |
| Bernard G. Caulfield | Democratic | 1st | February 1, 1875 – March 4, 1877 | |
| Edwin V. Champion | Democratic | At-large | January 3, 1937 – January 3, 1939 | |
| Pleasant T. Chapman | Republican | 24th | March 4, 1905 – March 4, 1911 | |
| Chester A. Chesney | Democratic | 11th | January 3, 1949 – January 3, 1951 | |
| Robert A. Childs | Republican | 8th | March 4, 1893 – March 4, 1895 | |
| Carl R. Chindblom | Republican | 10th | March 4, 1919 – March 4, 1933 | |
| Burnett M. Chiperfield | Republican | At-large | March 4, 1915 – March 4, 1917 | |
| 15th | November 4, 1930 – March 4, 1933 | |||
| Robert B. Chiperfield | Republican | 15th | January 3, 1939 – January 3, 1949 | |
| 19th | January 3, 1949 – January 3, 1963 | |||
| Marguerite S. Church | Republican | 13th | January 3, 1951 – January 3, 1963 | |
| Ralph E. Church | Republican | 10th | January 3, 1935 – January 3, 1941 | |
| January 3, 1943 – January 3, 1949 | ||||
| 13th | January 3, 1949 – March 21, 1950 | Died | ||
| Isaac Clements | Republican | 18th | March 4, 1873 – March 4, 1875 | |
| Roy Clippinger | Republican | 24th | November 6, 1945 – January 3, 1949 | |
| Harold R. Collier | Republican | 10th | January 3, 1957 – January 3, 1973 | |
| 6th | January 3, 1973 – January 3, 1975 | |||
| Cardiss Collins | Democratic | 7th | June 5, 1973 – January 3, 1997 | |
| George W. Collins | Democratic | 6th | November 3, 1970 – December 8, 1972 | Died |
| James A. Connolly | Republican | 17th | March 4, 1895 – March 4, 1899 | |
| Burton C. Cook | Republican | 6th | March 4, 1865 – August 26, 1871 | Resigned |
| Daniel P. Cook | Democratic-Republican | At-large | March 4, 1819 – March 4, 1825 | |
| Anti-Jacksonian | March 4, 1825 – March 4, 1827 | |||
| Edward D. Cooke | Republican | 6th | March 4, 1895 – June 24, 1897 | Died |
| Ira C. Copley | Republican | 11th | March 4, 1911 – March 4, 1915 | |
| Progressive | March 4, 1915 – March 4, 1917 | |||
| Republican | March 4, 1917 – March 4, 1923 | |||
| Tom Corcoran | Republican | 15th | January 3, 1977 – January 3, 1983 | |
| 14th | January 3, 1983 – November 28, 1984 | Resigned to run for the US Senate | ||
| Franklin Corwin | Republican | 7th | March 4, 1873 – March 4, 1875 | |
| Jerry F. Costello | Democratic | 21st | August 9, 1988 – January 3, 1993 | |
| 12th | January 3, 1993 – January 3, 2013 | |||
| John W. Cox Jr. | Democratic | 16th | January 3, 1991 – January 3, 1993 | |
| Dan Crane | Republican | 22nd | January 3, 1979 – January 3, 1983 | |
| 19th | January 3, 1983 – January 3, 1985 | |||
| Philip M. Crane | Republican | 13th | November 25, 1969 – January 3, 1973 | |
| 12th | January 3, 1973 – January 3, 1993 | |||
| 8th | January 3, 1993 – January 3, 2005 | |||
| John M. Crebs | Democratic | 13th | March 4, 1869 – March 4, 1873 | |
| Joseph B. Crowley | Democratic | 19th | March 4, 1899 – March 4, 1903 | |
| 23rd | March 4, 1903 – March 4, 1905 | |||
| William Cullen | Republican | 7th | March 4, 1881 – March 4, 1883 | |
| 8th | March 4, 1883 – March 4, 1885 | |||
| Shelby M. Cullom | Republican | 8th | March 4, 1865 – March 4, 1871 | |
| Thomas Cusack | Democratic | 4th | March 4, 1899 – March 4, 1901 | |
| Danny K. Davis | Democratic | 7th | January 3, 1997 – Present | Incumbent |
| George R. Davis | Republican | 2nd | March 4, 1879 – March 4, 1883 | |
| 3rd | March 4, 1883 – March 4, 1885 | |||
| Jack Davis | Republican | 4th | January 3, 1987 – January 3, 1989 | |
| Jacob C. Davis | Democratic | 5th | November 4, 1856 – March 4, 1857 | |
| Rodney Davis | Republican | 13th | January 3, 2013 – Present | Incumbent |
| William L. Dawson | Democratic | 1st | January 3, 1943 – November 9, 1970 | Died |
| Stephen A. Day | Republican | At-large | January 3, 1941 – January 3, 1945 | |
| Oscar De Priest | Republican | 1st | March 4, 1929 – January 3, 1935 | |
| Edward E. Denison | Republican | 25th | March 4, 1915 – March 4, 1931 | |
| Edward J. Derwinski | Republican | 4th | January 3, 1959 – January 3, 1983 | |
| Charles S. Dewey | Republican | 9th | January 3, 1941 – January 3, 1945 | |
| Frank S. Dickson | Republican | 23rd | March 4, 1905 – March 4, 1907 | |
| William H. Dieterich | Democratic | At-large | March 4, 1931 – March 4, 1933 | |
| Everett M. Dirksen | Republican | 16th | March 4, 1933 – January 3, 1949 | |
| Donald C. Dobbins | Democratic | 19th | March 4, 1933 – January 3, 1937 | |
| Robert Dold | Republican | 10th | January 3, 2011 – January 3, 2013 | |
| January 3, 2015 – January 3, 2017 | ||||
| Emily Taft Douglas | Democratic | At-large | January 3, 1945 – January 3, 1947 | |
| Stephen A. Douglas | Democratic | 5th | March 4, 1843 – March 3, 1847 | Resigned at close of Congress after being elected to the US Senate |
| Finis E. Downing | Democratic | 16th | March 4, 1895 – June 5, 1896 | Lost contested election |
| Thomas A. Doyle | Democratic | 4th | November 6, 1923 – March 4, 1931 | |
| Tammy Duckworth | Democratic | 8th | January 3, 2013 – January 3, 2017 | |
| Joseph Duncan | Jacksonian | At-large | March 4, 1827 – March 4, 1833 | |
| 3rd | March 4, 1833 – September 21, 1834 | Resigned to become Governor of Illinois | ||
| Ransom W. Dunham | Republican | 1st | March 4, 1883 – March 4, 1889 | |
| Richard J. Durbin | Democratic | 20th | January 3, 1983 – January 3, 1997 | |
| Allan C. Durborow Jr. | Democratic | 3rd | March 4, 1891 – March 4, 1895 | |
| John R. Eden | Democratic | 7th | March 4, 1863 – March 4, 1865 | |
| 15th | March 4, 1873 – March 4, 1879 | |||
| 17th | March 4, 1885 – March 4, 1887 | |||
| Reuben Ellwood | Republican | 5th | March 4, 1883 – July 1, 1885 | Died |
| Rahm Emanuel | Democratic | 5th | January 3, 2003 – January 2, 2009 | Resigned to become White House Chief of Staff |
| Martin Emerich | Democratic | 1st | March 4, 1903 – March 4, 1905 | |
| William Enyart | Democratic | 12th | January 3, 2013 – January 3, 2015 | |
| John N. Erlenborn | Republican | 14th | January 3, 1965 – January 3, 1983 | |
| 13th | January 3, 1983 – January 3, 1985 | |||
| Lane Evans | Democratic | 17th | January 3, 1983 – January 3, 2007 | |
| Lynden Evans | Democratic | 9th | March 4, 1911 – March 4, 1913 | |
| Thomas W. Ewing | Republican | 15th | July 2, 1991 – January 3, 2001 | |
| John F. Farnsworth | Republican | 2nd | March 4, 1857 – March 4, 1861 | |
| March 4, 1863 – March 4, 1873 | ||||
| Charles B. Farwell | Republican | 1st | March 4, 1871 – March 4, 1873 | |
| 3rd | March 4, 1873 – May 6, 1876 | Lost contested election | ||
| March 4, 1881 – March 4, 1883 | ||||
| John G. Fary | Democratic | 5th | July 8, 1975 – January 3, 1983 | |
| Harris W. Fawell | Republican | 13th | January 3, 1985 – January 3, 1999 | |
| John J. Feely | Democratic | 2nd | March 4, 1901 – March 4, 1903 | |
| Orlando B. Ficklin | Democratic | 3rd | March 4, 1843 – March 4, 1849 | |
| March 4, 1851 – March 4, 1853 | ||||
| Paul Findley | Republican | 20th | January 3, 1961 – January 3, 1983 | |
| John F. Finerty | Independent Democratic | 2nd | March 4, 1883 – March 4, 1885 | |
| Edward R. Finnegan | Democratic | 12th | January 3, 1961 – January 3, 1963 | |
| 9th | January 3, 1963 – December 6, 1964 | Resigned to become Judge of the Circuit Court of Cook County, IL | ||
| George W. Fithian | Democratic | 16th | March 4, 1889 – March 4, 1895 | |
| Louis Fitzhenry | Democratic | 17th | March 4, 1913 – March 4, 1915 | |
| Michael Patrick Flanagan | Republican | 5th | January 3, 1995 – January 3, 1997 | |
| William St. John Forman | Democratic | 18th | March 4, 1889 – March 4, 1895 | |
| Albert P. Forsythe | Greenback | 15th | March 4, 1879 – March 4, 1881 | |
| Greenbury L. Fort | Republican | 8th | March 4, 1873 – March 4, 1881 | |
| George E. Foss | Republican | 7th | March 4, 1895 – March 4, 1903 | |
| 10th | March 4, 1903 – March 4, 1913 | |||
| March 4, 1915 – March 4, 1919 | ||||
| Bill Foster | Democratic | 14th | March 8, 2008 – January 3, 2011 | |
| 11th | January 3, 2013 – Present | Incumbent | ||
| George Peter Foster | Democratic | 3rd | March 4, 1899 – March 4, 1903 | |
| 4th | March 4, 1903 – March 4, 1905 | |||
| Martin D. Foster | Democratic | 23rd | March 4, 1907 – March 4, 1919 | |
| Philip B. Fouke | Democratic | 8th | March 4, 1859 – March 4, 1863 | |
| H. Robert Fowler | Democratic | 24th | March 4, 1911 – March 4, 1915 | |
| Frank W. Fries | Democratic | 21st | January 3, 1937 – January 3, 1941 | |
| Charles Eugene Fuller | Republican | 12th | March 4, 1903 – March 4, 1913 | |
| March 4, 1915 – June 25, 1926 | Died | |||
| Benjamin F. Funk | Republican | 14th | March 4, 1893 – March 4, 1895 | |
| Frank H. Funk | Republican | 17th | March 4, 1921 – March 4, 1927 | |
| Thomas Gallagher | Democratic | 8th | March 4, 1909 – March 4, 1921 | |
| Jesús “Chuy” García | Democratic | 4th | January 3, 2019 – Present | Incumbent |
| William H. Gest | Republican | 11th | March 4, 1887 – March 4, 1891 | |
| Frank Gillespie | Democratic | 17th | March 4, 1933 – January 3, 1935 | |
| Julius Goldzier | Democratic | 4th | March 4, 1893 – March 4, 1895 | |
| Thomas S. Gordon | Democratic | 8th | January 3, 1943 – January 3, 1959 | |
| George E. Gorman | Democratic | 3rd | March 4, 1913 – March 4, 1915 | |
| John J. Gorman | Republican | 6th | March 4, 1921 – March 4, 1923 | |
| March 4, 1925 – March 4, 1927 | ||||
| Martin Gorski | Democratic | 4th | January 3, 1943 – January 3, 1949 | Died |
| 5th | January 3, 1949 – December 4, 1949 | |||
| Joseph V. Graff | Republican | 14th | March 4, 1895 – March 4, 1903 | |
| 16th | March 4, 1903 – March 4, 1911 | |||
| James M. Graham | Democratic | 21st | March 4, 1909 – March 4, 1915 | |
| William J. Graham | Republican | 14th | March 4, 1917 – June 7, 1924 | Resigned to become presiding judge of the US Court of Appeals |
| Peter C. Granata | Republican | 8th | March 4, 1931 – April 5, 1932 | Lost contested election |
| Kenneth J. Gray | Democratic | 25th | January 3, 1955 – January 3, 1963 | |
| 21st | January 3, 1963 – January 3, 1973 | |||
| 24th | January 3, 1973 – December 31, 1974 | Resigned | ||
| 22nd | January 3, 1985 – January 3, 1989 | |||
| John E. Grotberg | Republican | 14th | January 3, 1985 – November 15, 1986 | Died |
| Luis V. Gutierrez | Democratic | 4th | January 3, 1993 – January 3, 2019 | |
| William F.L. Hadley | Republican | 18th | December 2, 1895 – March 4, 1897 | |
| Homer W. Hall | Republican | 17th | March 4, 1927 – March 4, 1933 | |
| Tim Lee Hall | Democratic | 15th | January 3, 1975 – January 3, 1977 | |
| Debbie Halvorson | Democratic | 11th | January 3, 2009 – January 3, 2011 | |
| Robert P. Hanrahan | Republican | 3rd | January 3, 1973 – January 3, 1975 | |
| John J. Hardin | Whig | 7th | March 4, 1843 – March 4, 1845 | |
| Abner C. Harding | Republican | 4th | March 4, 1865 – March 4, 1869 | |
| Philip Hare | Democratic | 17th | January 3, 2007 – January 3, 2011 | |
| Charles M. Harris | Democratic | 4th | March 4, 1863 – March 4, 1865 | |
| Thomas L. Harris | Democratic | 7th | March 4, 1849 – March 4, 1851 | |
| 6th | March 4, 1855 – November 24, 1858 | Died | ||
| Carter Harrison Sr. | Democratic | 2nd | March 4, 1875 – March 4, 1879 | |
| William Hartzell | Democratic | 18th | March 4, 1875 – March 4, 1879 | |
| J. Dennis Hastert | Republican | 14th | January 3, 1987 – November 26, 2007 | Resigned |
| Robert M. A. Hawk | Republican | 5th | March 4, 1879 – June 29, 1882 | Died |
| John B. Hawley | Republican | 4th | March 4, 1869 – March 4, 1873 | |
| 6th | March 4, 1873 – March 4, 1875 | |||
| John B. Hay | Republican | 12th | March 4, 1869 – March 4, 1873 | |
| Charles Hayes | Democratic | 1st | August 23, 1983 – January 3, 1993 | |
| Philip C. Hayes | Republican | 7th | March 4, 1877 – March 4, 1881 | |
| James V. Heidinger | Republican | 24th | January 3, 1941 – March 22, 1945 | Died |
| Thomas J. Henderson | Republican | 6th | March 4, 1875 – March 4, 1883 | |
| 7th | March 4, 1883 – March 4, 1895 | |||
| John Henry | Whig | 7th | February 5, 1847 – March 4, 1847 | |
| Charles A. Hill | Republican | 8th | March 4, 1889 – March 4, 1891 | |
| Robert P. Hill | Democratic | 25th | March 4, 1913 – March 4, 1915 | |
| William H. Hinebaugh | Progressive | 12th | March 4, 1913 – March 4, 1915 | |
| William H. Hinrichsen | Democratic | 16th | March 4, 1897 – March 4, 1899 | |
| Robert R. Hitt | Republican | 5th | November 7, 1882 – March 4, 1883 | Died |
| 6th | March 4, 1883 – March 4, 1895 | |||
| 9th | March 4, 1895 – March 4, 1903 | |||
| 13th | March 4, 1903 – September 20, 1906 | |||
| Charles D. Hodges | Democratic | 6th | January 4, 1859 – March 4, 1859 | |
| Elmer J. Hoffman | Republican | 14th | January 3, 1959 – January 3, 1965 | |
| Richard W. Hoffman | Republican | 10th | January 3, 1949 – January 3, 1957 | |
| Joseph P. Hoge | Democratic | 6th | March 4, 1843 – March 4, 1847 | |
| William P. Holaday | Republican | 18th | March 4, 1923 – March 4, 1933 | |
| Albert J. Hopkins | Republican | 5th | December 7, 1885 – March 4, 1895 | |
| 8th | March 4, 1895 – March 4, 1903 | |||
| George Evan Howell | Republican | 21st | January 3, 1941 – October 5, 1947 | Resigned after becoming judge of the US Court of Claims |
| Stephen A. Hoxworth | Democratic | 15th | March 4, 1913 – March 4, 1915 | |
| Winnifred Huck | Republican | At-large | November 7, 1922 – March 4, 1923 | |
| Morton D. Hull | Republican | 2nd | April 23, 1923 – March 4, 1933 | |
| William E. Hull | Republican | 16th | March 4, 1923 – March 4, 1933 | |
| Randy Hultgren | Republican | 14th | January 3, 2011 – January 3, 2019 | |
| Andrew J. Hunter | Democratic | At-large | March 4, 1893 – March 4, 1895 | |
| 19th | March 4, 1897 – March 4, 1899 | |||
| Stephen A. Hurlbut | Republican | 4th | March 4, 1873 – March 4, 1877 | |
| Henry J. Hyde | Republican | 6th | January 3, 1975 – January 3, 2007 | |
| James T. Igoe | Democratic | 6th | March 4, 1927 – March 4, 1933 | |
| Michael L. Igoe | Democratic | At-large | January 3, 1935 – June 2, 1935 | Resigned to become U.S. Attorney |
| Ebon C. Ingersoll | Republican | 5th | May 20, 1864 – March 4, 1871 | |
| Clifford C. Ireland | Republican | 16th | March 4, 1917 – March 4, 1923 | |
| Edward M. Irwin | Republican | 22nd | March 4, 1925 – March 4, 1931 | |
| Jesse Jackson, Jr. | Democratic | 2nd | December 12, 1995 – November 21, 2012 | Resigned |
| Edward H. Jenison | Republican | 18th | January 3, 1947 – January 3, 1949 | |
| 23rd | January 3, 1949 – January 3, 1953 | |||
| Thomas M. Jett | Democratic | 18th | March 4, 1897 – March 4, 1903 | |
| Anton J. Johnson | Republican | 14th | January 3, 1939 – January 3, 1949 | |
| Calvin D. Johnson | Republican | 22nd | January 3, 1943 – January 3, 1945 | |
| Tim Johnson | Republican | 15th | January 3, 2001 – January 3, 2013 | |
| William Richard Johnson | Republican | 13th | March 4, 1925 – March 4, 1933 | |
| Edgar A. Jonas | Republican | 12th | January 3, 1949 – January 3, 1955 | |
| Norman B. Judd | Republican | 1st | March 4, 1867 – March 4, 1871 | |
| Niels Juul | Republican | 7th | March 4, 1917 – March 4, 1921 | |
| Charles A. Karch | Democratic | 22nd | March 4, 1931 – November 6, 1932 | Died |
| Russell W. Keeney | Republican | 14th | January 3, 1957 – January 11, 1958 | Died |
| Kent E. Keller | Democratic | 25th | March 4, 1931 – January 3, 1941 | |
| William Kellogg | Republican | 4th | March 4, 1857 – March 4, 1863 | |
| Edward A. Kelly | Democratic | 3rd | March 4, 1931 – January 3, 1943 | |
| January 3, 1945 – January 3, 1947 | ||||
| Robin Kelly | Democratic | 2nd | April 9, 2013 – Present | Incumbent |
| Fred J. Kern | Democratic | 21st | March 4, 1901 – March 4, 1903 | |
| Edward John King | Republican | 15th | March 4, 1915 – February 17, 1929 | Died |
| Adam Kinzinger | Republican | 11th | January 3, 2011 – January 3, 2013 | |
| 16th | January 3, 2013 – Present | Incumbent | ||
| Mark Kirk | Republican | 10th | January 3, 2001 – November 29, 2010 | Resigned after being elected to the U.S. Senate |
| John C. Kluczynski | Democratic | 5th | January 3, 1951 – January 26, 1975 | Died |
| Anthony L. Knapp | Democratic | 6th | December 12, 1861 – March 4, 1863 | |
| 10th | March 4, 1863 – March 4, 1865 | |||
| Robert M. Knapp | Democratic | 11th | March 4, 1873 – March 4, 1875 | |
| March 4, 1877 – March 4, 1879 | ||||
| Philip Knopf | Republican | 7th | March 4, 1903 – March 4, 1909 | |
| James Knox | Whig | 4th | March 4, 1853 – March 4, 1855 | |
| Opposition | March 4, 1855 – March 4, 1857 | |||
| Leo Kocialkowski | Democratic | 8th | March 4, 1933 – January 3, 1943 | |
| Raja Krishnamoorthi | Democratic | 8th | January 3, 2017 – Present | Incumbent |
| Stanley H. Kunz | Democratic | 8th | March 4, 1921 – March 4, 1931 | [ |
| April 5, 1932 – March 4, 1933 | Won contested election | |||
| Andrew J. Kuykendall | Republican | 13th | March 4, 1865 – March 4, 1867 | [ |
| Darin LaHood | Republican | 18th | September 10, 2015 – Present | Elected to finish Aaron Schock’s term. |
| Ray LaHood | Republican | 18th | January 3, 1995 – January 3, 2009 | |
| Silas Z. Landes | Democratic | 16th | March 4, 1885 – March 4, 1889 | |
| Edward Lane | Democratic | 17th | March 4, 1887 – March 4, 1895 | |
| William Lathrop | Republican | 4th | March 4, 1877 – March 4, 1879 | |
| Frank Lawler | Democratic | 2nd | March 4, 1885 – March 4, 1891 | |
| John V. Le Moyne | Democratic | 3rd | May 6, 1876 – March 4, 1877 | Won contested election |
| John H. Lewis | Republican | 9th | March 4, 1881 – March 4, 1883 | |
| Roland V. Libonati | Democratic | 7th | December 31, 1957 – January 3, 1965 | |
| Abraham Lincoln | Whig | 7th | March 4, 1847 – March 4, 1849 | Retired to private sector. |
| Neil J. Linehan | Democratic | 3rd | January 3, 1949 – January 3, 1951 | |
| William W. Link | Democratic | 7th | January 3, 1945 – January 3, 1947 | |
| Bill Lipinski | Democratic | 5th | January 3, 1983 – January 3, 1993 | |
| 3rd | January 3, 1993 – January 3, 2005 | |||
| Dan Lipinski | Democratic | 3rd | January 3, 2005 – January 3, 2021 | Defeated in primary by Marie Newman |
| John A. Logan | Democratic | 9th | March 4, 1859 – April 2, 1862 | Resigned to accept commission as a brigadier general in the Union Army |
| Republican | At-large | March 4, 1867 – March 3, 1871 | Resigned to become a US Senator | |
| Lewis M. Long | Democratic | At-large | January 3, 1937 – January 3, 1939 | |
| William Lorimer | Republican | 2nd | March 4, 1895 – March 4, 1901 | |
| 6th | March 4, 1903 – June 17, 1909 | Resigned after being elected to the US Senate | ||
| Owen Lovejoy | Republican | 3rd | March 4, 1857 – March 4, 1863 | |
| 5th | March 4, 1863 – March 25, 1864 | Died | ||
| Frank O. Lowden | Republican | 13th | November 6, 1906 – March 4, 1911 | |
| Scott W. Lucas | Democratic | 20th | January 3, 1935 – January 3, 1939 | |
| Frederick Lundin | Republican | 7th | March 4, 1909 – March 4, 1911 | |
| A. F. Maciejewski | Democratic | 6th | January 3, 1939 – December 8, 1942 | Resigned |
| Peter F. Mack Jr. | Democratic | 21st | January 3, 1949 – January 3, 1963 | |
| Martin B. Madden | Republican | 1st | March 4, 1905 – April 27, 1928 | Died |
| Edward Rell Madigan | Republican | 21st | January 3, 1973 – January 3, 1983 | |
| 15th | January 3, 1983 – March 8, 1991 | Resigned to become U.S. Secretary of Agriculture | ||
| William F. Mahoney | Democratic | 5th | March 4, 1901 – March 4, 1903 | |
| 8th | March 4, 1903 – December 27, 1904 | Died | ||
| J. Earl Major | Democratic | 21st | March 4, 1923 – March 4, 1925 | |
| March 4, 1927 – March 4, 1929 | ||||
| March 4, 1931 – October 6, 1933 | Resigned after becoming judge of the US District Court for the Southern District of Illinois | |||
| James R. Mann | Republican | 1st | March 4, 1897 – March 4, 1903 | |
| 2nd | March 4, 1903 – November 30, 1922 | Died | ||
| Donald A. Manzullo | Republican | 16th | January 3, 1993 – January 3, 2013 | |
| Benjamin F. Marsh | Republican | 10th | March 4, 1877 – March 4, 1883 | |
| 11th | March 4, 1893 – March 4, 1895 | |||
| 15th | March 4, 1895 – March 4, 1901 | |||
| 14th | March 4, 1903 – June 2, 1905 | Died | ||
| Samuel S. Marshall | Democratic | 9th | March 4, 1855 – March 4, 1859 | |
| 11th | March 4, 1865 – March 4, 1873 | |||
| 19th | March 4, 1873 – March 4, 1875 | |||
| Charles Martin | Democratic | 4th | March 4, 1917 – October 28, 1917 | Died |
| James Stewart Martin | Republican | 16th | March 4, 1873 – March 4, 1875 | |
| John C. Martin | Democratic | At-large | January 3, 1939 – January 3, 1941 | |
| Lynn Morley Martin | Republican | 16th | January 3, 1981 – January 3, 1991 | |
| Harry H. Mason | Democratic | 21st | January 3, 1935 – January 3, 1937 | |
| Noah M. Mason | Republican | 12th | January 3, 1937 – January 3, 1949 | |
| 15th | January 3, 1949 – January 3, 1963 | |||
| William E. Mason | Republican | 3rd | March 4, 1887 – March 4, 1891 | |
| At-large | March 4, 1917 – June 16, 1921 | Died | ||
| William L. May | Democratic | 3rd | December 1, 1834 – March 4, 1837 | |
| March 4, 1837 – March 4, 1839 | ||||
| James McAndrews | Democratic | 4th | March 4, 1901 – March 4, 1903 | |
| 5th | March 4, 1903 – March 4, 1905 | |||
| 6th | March 4, 1913 – March 4, 1921 | |||
| 9th | January 3, 1935 – January 3, 1941 | |||
| John A. McClernand | Democratic | 2nd | March 4, 1843 – March 4, 1851 | |
| 6th | November 8, 1859 – October 28, 1861 | Resigned to accept commission as brigadier general of volunteers for service in the Civil War | ||
| Robert McClory | Republican | 12th | January 3, 1963 – January 3, 1973 | |
| 13th | January 3, 1973 – January 3, 1983 | |||
| Joseph M. McCormick | Republican | At-large | March 4, 1917 – March 4, 1919 | |
| Ruth H. McCormick | Republican | At-large | March 4, 1929 – March 4, 1931 | |
| John J. McDannold | Democratic | 12th | March 4, 1893 – March 4, 1895 | |
| James T. McDermott | Democratic | 4th | March 4, 1907 – July 21, 1914 | Resigned |
| March 4, 1915 – March 4, 1917 | Elected to fill his own seat | |||
| Lawrence E. McGann | Democratic | 2nd | March 4, 1891 – March 4, 1895 | |
| 3rd | March 4, 1895 – December 27, 1895 | Lost contested election | ||
| Charles McGavin | Republican | 8th | March 4, 1905 – March 4, 1909 | |
| John C. McKenzie | Republican | 13th | March 4, 1911 – March 4, 1925 | |
| Raymond S. McKeough | Democratic | 2nd | January 3, 1935 – January 3, 1943 | |
| William B. McKinley | Republican | 19th | March 4, 1905 – March 4, 1913 | |
| March 4, 1915 – March 4, 1921 | ||||
| James McKinney | Republican | 14th | November 7, 1905 – March 4, 1913 | |
| John McLean | Democratic-Republican | At-large | December 3, 1818 – March 4, 1819 | |
| Robert T. McLoskey | Republican | 19th | January 3, 1963 – January 3, 1965 | |
| Rolla C. McMillen | Republican | 19th | June 13, 1944 – January 3, 1949 | |
| 22nd | January 3, 1949 – January 3, 1951 | |||
| Thompson W. McNeely | Democratic | 9th | March 4, 1869 – March 4, 1873 | |
| John McNulta | Republican | 13th | March 4, 1873 – March 4, 1875 | |
| William E. McVey | Republican | 4th | January 3, 1951 – August 10, 1958 | Died |
| James A. Meeks | Democratic | 18th | March 4, 1933 – January 3, 1939 | |
| Ralph Metcalfe | Democratic | 1st | January 3, 1971 – October 10, 1978 | Died |
| M. Alfred Michaelson | Republican | 7th | March 4, 1921 – March 4, 1931 | |
| Anthony Michalek | Republican | 5th | March 4, 1905 – March 4, 1907 | |
| Robert H. Michel | Republican | 18th | January 3, 1957 – January 3, 1995 | |
| J. Ross Mickey | Democratic | 15th | March 4, 1901 – March 4, 1903 | |
| Abner J. Mikva | Democratic | 2nd | January 3, 1969 – January 3, 1973 | |
| 10th | January 3, 1975 – September 26, 1979 | Resigned to become judge of U.S. Court of Appeals | ||
| Edward E. Miller | Republican | 22nd | March 4, 1923 – March 4, 1925 | |
| Mary Miller | Republican | 15th | January 3, 2021 – Present | Incumbent |
| Daniel W. Mills | Republican | 4th | March 4, 1897 – March 4, 1899 | |
| Arthur W. Mitchell | Democratic | 1st | January 3, 1935 – January 3, 1943 | |
| Richard S. Molony | Democratic | 4th | March 4, 1851 – March 4, 1853 | |
| Allen F. Moore | Republican | 19th | March 4, 1921 – March 4, 1925 | |
| Jesse Hale Moore | Republican | 7th | March 4, 1869 – March 4, 1873 | |
| Isaac N. Morris | Democratic | 5th | March 4, 1857 – March 4, 1861 | |
| James L.D. Morrison | Democratic | 8th | November 4, 1856 – March 4, 1857 | |
| William Ralls Morrison | Democratic | 12th | March 4, 1863 – March 4, 1865 | |
| 17th | March 4, 1873 – March 4, 1883 | |||
| 18th | March 4, 1883 – March 4, 1887 | |||
| Samuel W. Moulton | Republican | At-large | March 4, 1865 – March 4, 1867 | |
| Democratic | 15th | March 4, 1881 – March 4, 1883 | ||
| 17th | March 4, 1883 – March 4, 1885 | |||
| William J. Moxley | Republican | 6th | November 23, 1909 – March 4, 1911 | |
| P. H. Moynihan | Republican | 2nd | March 4, 1933 – January 3, 1935 | |
| Everett J. Murphy | Republican | 21st | March]] 4, 1895 – March 4, 1897 | |
| Morgan F. Murphy | Democratic | 3rd | January 3, 1971 – January 3, 1973 | |
| 2nd | January 3, 1973 – January 3, 1981 | |||
| William T. Murphy | Democratic | 3rd | January 3, 1959 – January 3, 1971 | |
| James C. Murray | Democratic | 3rd | January 3, 1955 – January 3, 1957 | |
| William H. Neece | Democratic | 11th | March 4, 1883 – March 4, 1887 | |
| Walter Nesbit | Democratic | At-large | March 4, 1933 – January 3, 1935 | |
| Walter C. Newberry | Democratic | 4th | March 4, 1891 – March 4, 1893 | |
| Marie Newman | Democratic | 3rd | January 3, 2021 – Present | Incumbent |
| Edward T. Noonan | Democratic | 5th | March 4, 1899 – March 4, 1901 | |
| Jesse O. Norton | Whig | 3rd | March 4, 1853 – March 4, 1855 | |
| Opposition | March 4, 1855 – March 4, 1857 | |||
| Republican | 6th | March 4, 1863 – March 4, 1865 | ||
| George M. O’Brien | Republican | 17th | January 3, 1973 – January 3, 1983 | Died |
| 4th | January 3, 1983 – July 17, 1986 | |||
| Thomas J. O’Brien | Democratic | 6th | March 4, 1933 – January 3, 1939 | |
| January 3, 1943 – April 14, 1964 | Died | |||
| Frank T. O’Hair | Democratic | 18th | March 4, 1913 – March 4, 1915 | |
| Barratt O’Hara | Democratic | 2nd | January 3, 1949 – January 3, 1951 | |
| January 3, 1953 – January 3, 1969 | ||||
| Thomas L. Owens | Republican | 7th | January 3, 1947 – June 7, 1948 | Died |
| George A. Paddock | Republican | 10th | January 3, 1941 – January 3, 1943 | |
| Claude V. Parsons | Democratic | 24th | November 4, 1930 – January 3, 1941 | |
| Lewis E. Payson | Republican | 8th | March 4, 1881 – March 4, 1883 | |
| 9th | March 4, 1883 – March 4, 1891 | |||
| David D. Phelps | Democratic | 19th | January 3, 1999 – January 3, 2003 | |
| Ralph Plumb | Republican | 8th | March 4, 1885 – March 4, 1889 | |
| Nathaniel Pope | Democratic-Republican | Territory | March 4, 1817 – November 30, 1818 | |
| John Edward Porter | Republican | 10th | January 22, 1980 – January 3, 2001 | |
| Glenn Poshard | Democratic | 22nd | January 3, 1989 – January 3, 1993 | |
| 19th | January 3, 1993 – January 3, 1999 | |||
| Philip S. Post | Republican | 10th | March 4, 1887 – January 6, 1895 | Died |
| Melvin Price | Democratic | 22nd | January 3, 1945 – January 3, 1949 | |
| 25th | January 3, 1949 – January 3, 1953 | |||
| 24th | January 3, 1953 – January 3, 1973 | |||
| 23rd | January 3, 1973 – January 3, 1983 | |||
| 21st | January 3, 1983 – April 22, 1988 | Died | ||
| George W. Prince | Republican | 10th | December 2, 1895 – March 4, 1903 | |
| 15th | March 4, 1903 – March 4, 1913 | |||
| Roman C. Pucinski | Democratic | 11th | January 3, 1959 – January 3, 1973 | |
| Michael Quigley | Democratic | 5th | April 7, 2009 – Present | Incumbent |
| Tom Railsback | Republican | 19th | January 3, 1967 – January 3, 1983 | [ |
| Henry T. Rainey | Democratic | 20th | March 4, 1903 – March 4, 1921 | |
| March 4, 1923 – August 19, 1934 | Died | |||
| John W. Rainey | Democratic | 4th | April 2, 1918 – May 4, 1923 | Died |
| Frank M. Ramey | Republican | 21st | March 4, 1929 – March 4, 1931 | |
| Henry Riggs Rathbone | Republican | At-large | March 4, 1923 – July 15, 1928 | Died |
| Green B. Raum | Republican | 13th | March 4, 1867 – March 4, 1869 | |
| William H. Ray | Republican | 10th | March 4, 1873 – March 4, 1875 | |
| Chauncey W. Reed | Republican | 11th | January 3, 1935 – January 3, 1949 | |
| 14th | January 3, 1949 – February 9, 1956 | Died | ||
| Walter Reeves | Republican | 11th | March 4, 1895 – March 4, 1903 | |
| Charlotte T. Reid | Republican | 15th | January 3, 1963 – October 7, 1971 | Resigned to become member of the Federal Communications Commission |
| Frank R. Reid | Republican | 11th | March 4, 1923 – January 3, 1935 | |
| Frederick Remann | Republican | 18th | March 4, 1895 – July 14, 1895 | Died |
| Alexander J. Resa | Democratic | 9th | January 3, 1945 – January 3, 1947 | |
| John Reynolds | Jacksonian | 1st | December 1, 1834 – March 4, 1837 | |
| Democratic | March 4, 1839 – March 4, 1843 | |||
| Mel Reynolds | Democratic | 2nd | January 3, 1993 – October 1, 1995 | Resigned |
| Edward Y. Rice | Democratic | 10th | March 4, 1871 – March 4, 1873 | |
| John Blake Rice | Republican | 1st | March 4, 1873 – December 17, 1874 | Died |
| William A. Richardson | Democratic | 5th | December 6, 1847 – August 25, 1856 | Resigned |
| March 4, 1861 – January 29, 1863 | Resigned after being elected to the US Senate | |||
| James M. Riggs | Democratic | 12th | March 4, 1883 – March 4, 1887 | |
| Hugh M. Rigney | Democratic | 19th | January 3, 1937 – January 3, 1939 | |
| John I. Rinaker | Republican | 16th | June 5, 1896 – March 4, 1897 | Won contested election |
| Zeno J. Rives | Republican | 21st | March 4, 1905 – March 4, 1907 | |
| James Carroll Robinson | Democratic | 7th | March 4, 1859 – March 4, 1863 | |
| 11th | March 4, 1863 – March 4, 1865 | |||
| 8th | March 4, 1871 – March 4, 1873 | |||
| 12th | March 4, 1873 – March 4, 1875 | |||
| William A. Rodenberg | Republican | 21st | March 4, 1899 – March 4, 1901 | |
| 22nd | March 4, 1903 – March 4, 1913 | |||
| March 4, 1915 – March 4, 1923 | ||||
| Daniel J. Ronan | Democratic | 6th | January 3, 1965 – August 13, 1969 | Died |
| Peter Roskam | Republican | 6th | January 3, 2007 – January 3, 2019 | |
| Lewis W. Ross | Democratic | 9th | March 4, 1863 – March 4, 1869 | |
| Dan Rostenkowski | Democratic | 8th | January 3, 1959 – January 3, 1993 | |
| 5th | January 3, 1993 – January 3, 1995 | |||
| William A. Rowan | Democratic | 2nd | January 3, 1943 – January 3, 1947 | |
| Jonathan H. Rowell | Republican | 14th | March 4, 1883 – March 4, 1891 | |
| Donald Rumsfeld | Republican | 13th | January 3, 1963 – May 25, 1969 | Resigned to become Director of the Office of Economic Opportunity |
| Bobby Rush | Democratic | 1st | January 3, 1993 – Present | Incumbent |
| Marty Russo | Democratic | 3rd | January 3, 1975 – January 3, 1993 | |
| Adolph J. Sabath | Democratic | 5th | March 4, 1907 – January 3, 1949 | |
| 7th | January 3, 1949 – November 6, 1952 | Died | ||
| George E. Sangmeister | Democratic | 4th | January 3, 1989 – January 3, 1993 | |
| 11th | January 3, 1993 – January 3, 1995 | |||
| Gus Savage | Democratic | 2nd | January 3, 1981 – January 3, 1993 | |
| Edwin M. Schaefer | Democratic | 22nd | March 4, 1933 – January 3, 1943 | |
| Janice D. Schakowsky | Democratic | 9th | January 3, 1999 – Present | Incumbent |
| Bobby Schilling | Republican | 17th | January 3, 2011 – January 3, 2013 | |
| Gale Schisler | Democratic | 19th | January 3, 1965 – January 3, 1967 | |
| Brad Schneider | Democratic | 10th | January 3, 2013 – January 3, 2015 | |
| January 3, 2017 – present | Incumbent | |||
| Aaron Schock | Republican | 18th | January 3, 2009 – March 31, 2015 | |
| Leonard W. Schuetz | Democratic | 7th | March 4, 1931 – February 13, 1944 | Died |
| Owen Scott | Democratic | 14th | March 4, 1891 – March 4, 1893 | |
| Thomas J. Selby | Democratic | 16th | March 4, 1901 – March 4, 1903 | |
| Aaron Shaw | Democratic | 7th | March 4, 1857 – March 4, 1859 | |
| 16th | March 4, 1883 – March 4, 1885 | |||
| Guy L. Shaw | Republican | 20th | March 4, 1921 – March 4, 1923 | |
| Timothy P. Sheehan | Republican | 11th | January 3, 1951 – January 3, 1959 | |
| John C. Sherwin | Republican | 4th | March 4, 1879 – March 4, 1883 | |
| John Shimkus | Republican | 20th | January 3, 1997 – January 3, 2003 | |
| 19th | January 3, 2003 – January 3, 2013 | |||
| 15th | January 3, 2013 – January 3, 2021 | Retired | ||
| George E. Shipley | Democratic | 23rd | January 3, 1959 – January 3, 1973 | |
| 22nd | January 3, 1973 – January 3, 1979 | |||
| Paul Simon | Democratic | 24th | January 3, 1975 – January 3, 1983 | |
| 22nd | January 3, 1983 – January 3, 1985 | |||
| Edna O. Simpson | Republican | 20th | January 3, 1959 – January 3, 1961 | |
| James Simpson Jr. | Republican | 10th | March 4, 1933 – January 3, 1935 | |
| Sid Simpson | Republican | 20th | January 3, 1943 – October 26, 1958 | Died |
| James W. Singleton | Democratic | 11th | March 4, 1879 – March 4, 1883 | |
| Charles Slade | Jacksonian | 1st | March 4, 1833 – July 26, 1834 | Died |
| Dietrich C. Smith | Republican | 13th | March 4, 1881 – March 4, 1883 | |
| Frank L. Smith | Republican | 17th | March 4, 1919 – March 4, 1921 | |
| George W. Smith | Republican | 20th | March 4, 1889 – March 4, 1895 | |
| 22nd | March 4, 1895 – March 4, 1903 | |||
| 25th | March 4, 1903 – November 30, 1907 | Died | ||
| Robert Smith | Democratic | 1st | March 4, 1843 – March 4, 1847 | |
| Independent Democratic | March 4, 1847 – March 4, 1849 | |||
| Democratic | 8th | March 4, 1857 – March 4, 1859 | ||
| Thomas V. Smith | Democratic | At-large | January 3, 1939 – January 3, 1941 | |
| Henry Snapp | Republican | 6th | December 4, 1871 – March 4, 1873 | |
| Howard M. Snapp | Republican | 11th | March 4, 1903 – March 4, 1911 | |
| Herman W. Snow | Democratic | 9th | March 4, 1891 – March 4, 1893 | |
| Adam W. Snyder | Democratic | 1st | March 4, 1837 – March 4, 1839 | |
| William A.J. Sparks | Democratic | 16th | March 4, 1875 – March 4, 1883 | |
| William L. Springer | Republican | 22nd | January 3, 1951 – January 3, 1973 | |
| William M. Springer | Democratic | 12th | March 4, 1875 – March 4, 1883 | |
| 13th | March 4, 1883 – March 4, 1895 | |||
| Elliott W. Sproul | Republican | 3rd | March 4, 1921 – March 4, 1931 | |
| Edmund J. Stack | Democratic | 6th | March 4, 1911 – March 4, 1913 | |
| Benjamin Stephenson | Democratic-Republican | Territory | November 14, 1814 – March 4, 1817 | |
| John A. Sterling | Republican | 17th | March 4, 1903 – March 4, 1913 | |
| March 4, 1915 – October 17, 1918 | Died | |||
| Bradford N. Stevens | Democratic | 5th | March 4, 1871 – March 4, 1873 | |
| Adlai E. Stevenson I | Democratic | 13th | March 4, 1875 – March 4, 1877 | |
| March 4, 1879 – March 4, 1881 | ||||
| Lewis Steward | Democratic | 8th | March 4, 1891 – March 4, 1893 | |
| Bennett M. Stewart | Democratic | 1st | January 3, 1979 – January 3, 1981 | |
| Claude U. Stone | Democratic | 16th | March 4, 1911 – March 4, 1917 | |
| William Stratton | Republican | At-large | January 3, 1941 – January 3, 1943 | |
| January 3, 1947 – January 3, 1949 | ||||
| Lawrence B. Stringer | Democratic | At-large | March 4, 1913 – March 4, 1915 | |
| John T. Stuart | Whig | 3rd | March 4, 1839 – March 4, 1843 | |
| Democratic | 8th | March 4, 1863 – March 4, 1865 | ||
| Jessie Sumner | Republican | 18th | January 3, 1939 – January 3, 1947) | |
| Clyde H. Tavenner | Democratic | 14th | March 4, 1913 – March 4, 1917 | |
| Abner Taylor | Republican | 1st | March 4, 1889 – March 4, 1893 | |
| Napoleon B. Thistlewood | Republican | 25th | February 15, 1908 – March 4, 1913 | |
| John R. Thomas | Republican | 18th | March 4, 1879 – March 4, 1883 | |
| 20th | March 4, 1883 – March 4, 1889 | |||
| Chester Thompson | Democratic | 14th | March 4, 1933 – January 3, 1939 | |
| Charles M. Thomson | Progressive | 10th | March 4, 1913 – March 4, 1915 | |
| Anthony Thornton | Democratic | 10th | March 4, 1865 – March 4, 1867 | |
| Thomas F. Tipton | Republican | 13th | March 4, 1877 – March 4, 1879 | |
| Richard W. Townshend | Democratic | 19th | March 4, 1877 – March 9, 1889 | Died |
| Thomas J. Turner | Democratic | 6th | March 4, 1847 – March 4, 1849 | |
| Robert J. Twyman | Republican | 9th | January 3, 1947 – January 3, 1949 | |
| Lauren Underwood | Democratic | 14th | January 3, 2019 – Present | Incumbent |
| Richard B. Vail | Republican | 2nd | January 3, 1947 – January 3, 1949 | |
| January 3, 1951 – January 3, 1953 | ||||
| Harold H. Velde | Republican | 18th | January 3, 1949 – January 3, 1957 | |
| Charles W. Vursell | Republican | 23rd | January 3, 1943 – January 3, 1949 | |
| 24th | January 3, 1949 – January 3, 1953 | |||
| 23rd | January 3, 1953 – January 3, 1959 | |||
| Joe Walsh | Republican | 8th | January 3, 2011 – January 3, 2013 | |
| James H. Ward | Democratic | 3rd | March 4, 1885 – March 4, 1887 | |
| Jasper D. Ward | Republican | 2nd | March 4, 1873 – March 4, 1875 | |
| Vespasian Warner | Republican | 13th | March 4, 1895 – March 4, 1903 | |
| 19th | March 4, 1903 – March 4, 1905 | |||
| Elihu B. Washburne | Whig | 1st | March 4, 1853 – March 4, 1855 | |
| Republican | March 4, 1855 – March 4, 1863 | |||
| 3rd | March 4, 1863 – March 6, 1869 | Resigned to become United States Secretary of State | ||
| Harold Washington | Democratic | 1st | January 3, 1981 – April 30, 1983 | Resigned to become Mayor of Chicago |
| Jerry Weller | Republican | 11th | January 3, 1995 – January 3, 2009 | |
| John Wentworth | Democratic | 4th | March 4, 1843 – March 4, 1851 | |
| 2nd | March 4, 1853 – March 4, 1855 | |||
| Republican | 1st | March 4, 1865 – March 4, 1867 | ||
| Charles S. Wharton | Republican | 4th | March 4, 1905 – March 4, 1907 | |
| William H. Wheat | Republican | 19th | January 3, 1939 – January 16, 1944 | Died |
| Hamilton K. Wheeler | Republican | 9th | March 4, 1893 – March 4, 1895 | |
| Loren E. Wheeler | Republican | 21st | March 4, 1915 – March 4, 1923 | |
| March 4, 1925 – March 4, 1927 | ||||
| George E. White | Republican | 5th | March 4, 1895 – March 4, 1899 | |
| Richard H. Whiting | Republican | 9th | March 4, 1875 – March 4, 1877 | |
| Scott Wike | Democratic | 11th | March 4, 1875 – March 4, 1877 | |
| 12th | March 4, 1889 – March 4, 1893 | |||
| James R. Williams | Democratic | 19th | December 2, 1889 – March 4, 1895 | |
| 20th | March 4, 1899 – March 4, 1903 | |||
| 24th | March 4, 1903 – March 4, 1905 | |||
| Thomas Sutler Williams | Republican | 24th | March 4, 1915 – November 11, 1929 | Resigned to become a judge to the United States Court of Claims |
| William E. Williams | Democratic | 16th | March 4, 1899 – March 4, 1901 | |
| At-large | March 4, 1913 – March 4, 1917 | |||
| William Warfield Wilson | Republican | 3rd | March 4, 1903 – March 4, 1913 | |
| March 4, 1915 – March 4, 1921 | ||||
| Benson Wood | Republican | 19th | March 4, 1895 – March 4, 1897 | |
| Charles W. Woodman | Republican | 4th | March 4, 1895 – March 4, 1897 | |
| James H. Woodworth | Republican | 2nd | March 4, 1855 – March 4, 1857 | |
| Nicholas E. Worthington | Democratic | 10th | March 4, 1883 – March 4, 1887 | |
| Richard Yates | Whig | 7th | March 4, 1851 – March 4, 1853 | |
| 6th | March 4, 1853 – March 4, 1855 | |||
| Richard Yates Jr. | Republican | At-large | March 4, 1919 – March 4, 1933 | |
| Sidney R. Yates | Democratic | 9th | January 3, 1949 – January 3, 1963 | |
| January 3, 1965 – January 3, 1999 | ||||
| Samuel H. Young | Republican | 10th | January 3, 1973 – January 3, 1975 | |
| Timothy R. Young | Democratic | 3rd | March 4, 1849 – March 4, 1851 |
