This is a list of U.S. Representatives from Illinois. Illinois became the 21st state on December 3, 1818.
Contents |
| Representative | Party | District | Service | Notes |
|---|---|---|---|---|
| J. Leroy Adair | Democratic | 15th | 1933–1937 | |
| George E. Adams | Republican | 4th | 1883–1891 | |
| Charles Adkins | Republican | 19th | 1925–1933 | |
| J. Frank Aldrich | Republican | 1st | 1893–1897 | |
| William Aldrich | Republican | 1st | 1877–1883 | |
| James C. Allen | Democratic | 7th | 1853–1857 | |
| At-large | 1863–1865 | |||
| John Clayton Allen | Republican | 14th | 1925–1933 | |
| Leo E. Allen | Republican | 13th | 1933–1949 | |
| 16th | 1949–1961 | |||
| William J. Allen | Democratic | 9th | 1862–1863 | |
| 13th | 1863–1865 | |||
| Willis Allen | Democratic | 2nd | 1851–1853 | |
| 9th | 1853–1855 | |||
| George A. Anderson | Democratic | 12th | 1887–1889 | |
| John B. Anderson | Republican | 16th | 1961–1981 | |
| William B. Anderson | Independent | 19th | 1875–1877 | |
| Frank Annunzio | Democratic | 7th | 1965–1973 | |
| 11th | 1973–1993 | |||
| Leslie C. Arends | Republican | 17th | 1935–1973 | |
| 15th | 1973–1974 | |||
| Isaac N. Arnold | Republican | 2nd | 1861–1863 | |
| 1st | 1863–1865 | |||
| Laurence F. Arnold | Democratic | 23rd | 1937–1943 | |
| William W. Arnold | Democratic | 23rd | 1923–1935 | |
| John C. Bagby | Democratic | 10th | 1875–1877 | |
| Edward D. Baker | Whig | 7th | 1845–1847 | |
| 6th | 1849–1851 | |||
| Jehu Baker | Republican | 12th | 1865–1869 | |
| 18th | 1887–1889 | |||
| Democratic | 21st | 1897–1899 | ||
| William N. Baltz | Democratic | 22nd | 1913–1915 | |
| Hiram Barber, Jr. | Republican | 3rd | 1879–1881 | |
| James M. Barnes | Democratic | 20th | 1939–1943 | |
| Granville Barrere | Republican | 9th | 1873–1875 | |
| Harry P. Beam | Democratic | 4th | 1931–1942 | |
| Melissa Bean | Democratic | 8th | 2005–2011 | |
| Hugh R. Belknap | Republican | 3rd | 1895–1899 | |
| John L. Beveridge | Republican | At-large | 1871–1873 | |
| Judy Biggert | Republican | 13th | 1999–present | |
| C. W. Bishop | Republican | 25th | 1941–1949 | |
| 26th | 1949–1953 | |||
| 25th | 1953–1955 | |||
| William H. Bissell | Democratic | 1st | 1849–1853 | |
| Independent Democrat | 8th | 1853–1855 | ||
| John C. Black | Democratic | At-large | 1893–1895 | |
| Rod R. Blagojevich | Democratic | 5th | 1997–2003 | |
| Shadrack Bond | Independent | (Illinois territory) |
1812–1813 | |
| Charles M. Borchers | Democratic | 19th | 1913–1915 | |
| Henry S. Boutell | Republican | 6th | 1897–1903 | |
| 9th | 1903–1911 | |||
| James B. Bowler | Democratic | 7th | 1953–1957 | |
| Thomas A. Boyd | Republican | 9th | 1877–1881 | |
| Lewis L. Boyer | Democratic | 15th | 1937–1939 | |
| Charles A. Boyle | Democratic | 12th | 1955–1959 | |
| Martin A. Brennan | Democratic | At-large | 1933–1937 | |
| Lorenzo Brentano | Republican | 3rd | 1877–1879 | |
| Frederick A. Britten | Republican | 9th | 1913–1935 | |
| Henry P.H. Bromwell | Republican | 7th | 1865–1869 | |
| Edwin B. Brooks | Republican | 23rd | 1919–1923 | |
| Terry L. Bruce | Democratic | 19th | 1985–1993 | |
| Frank Buchanan | Democratic | 7th | 1911–1917 | |
| John T. Buckbee | Republican | 12th | 1927–1936 | |
| James R. Buckley | Democratic | 6th | 1923–1925 | |
| James V. Buckley | Democratic | 4th | 1949–1951 | |
| Horatio C. Burchard | Republican | 3rd | 1869–1873 | |
| 5th | 1873–1879 | |||
| Albert G. Burr | Democratic | 10th | 1867–1871 | |
| Orlando Burrell | Republican | 20th | 1895–1897 | |
| Fred E. Busbey | Republican | 3rd | 1943–1945 | |
| Samuel T. Busey | Democratic | 15th | 1891–1893 | |
| Cheri Bustos | Democratic | 17th | 2013-present | |
| Emmet F. Byrne | Republican | 3rd | 1957–1959 | |
| Benjamin T. Cable | Democratic | 11th | 1891–1893 | |
| Ben F. Caldwell | Democratic | 17th | 1899–1903 | |
| 21st | 1903–1905 1907–1909 |
|||
| Alexander Campbell | Independent | 7th | 1875–1877 | |
| James R. Campbell | Democratic | 20th | 1897–1899 | |
| Thompson Campbell | Democratic | 6th | 1851–1853 | |
| Joseph G. Cannon | Republican | 14th | 1873–1883 | |
| 15th | 1883–1891 1893–1895 |
|||
| 12th | 1895–1903 | |||
| 18th | 1903–1913 1915–1923 |
|||
| Cliffard D. Carlson | Republican | 15th | 1972–1973 | |
| Zadok Casey | Democratic | 2nd | 1833–1841 | |
| Independent Democrat | 1841–1843 | |||
| Bernard G. Caulfield | Democratic | 1st | 1875–1877 | |
| Edwin V. Champion | Democratic | At-large | 1937–1939 | |
| Pleasant T. Chapman | Republican | 24th | 1905–1911 | |
| Chester A. Chesney | Democratic | 11th | 1949–1951 | |
| Robert A. Childs | Republican | 8th | 1893–1895 | |
| Carl R. Chindblom | Republican | 10th | 1919–1933 | |
| Burnett M. Chiperfield | Republican | At-large | 1915–1917 | |
| 15th | 1930–1933 | |||
| Robert B. Chiperfield | Republican | 15th | 1939–1949 | |
| 19th | 1949–1963 | |||
| Marguerite S. Church | Republican | 13th | 1951–1963 | |
| Ralph E. Church | Republican | 10th | 1935–1941 1943–1949 |
|
| 13th | 1949–1950 | |||
| Isaac Clements | Republican | 18th | 1873–1875 | |
| Roy Clippinger | Republican | 24th | 1945–1949 | |
| Harold R. Collier | Republican | 10th | 1957–1973 | |
| 6th | 1973–1975 | |||
| Cardiss Collins | Democratic | 7th | 1973–1997 | |
| George W. Collins | Democratic | 6th | 1970–1972 | |
| James A. Connolly | Republican | 17th | 1895–1899 | |
| Burton C. Cook | Republican | 6th | 1865–1871 | |
| Daniel P. Cook | Democratic-Republican | At-large | 1819–1825 | |
| National Republican | 1825–1827 | |||
| Edward D. Cooke | Republican | 6th | 1895–1897 | |
| Ira C. Copley | Republican | 11th | 1911–1915 | |
| Progressive | 1915–1917 | |||
| Republican | 1917–1923 | |||
| Tom Corcoran | Republican | 15th | 1977–1983 | |
| 14th | 1983–1984 | |||
| Franklin Corwin | Republican | 7th | 1873–1875 | |
| Jerry F. Costello | Democratic | 21st | 1988–1993 | |
| 12th | 1993–present | |||
| John W. Cox, Jr. | Democratic | 16th | 1991–1993 | |
| Dan Crane | Republican | 22nd | 1979–1983 | |
| 19th | 1983–1985 | |||
| Philip M. Crane | Republican | 13th | 1969–1973 | |
| 12th | 1973–1993 | |||
| 8th | 1993–2005 | |||
| John M. Crebs | Democratic | 13th | 1869–1873 | |
| Joseph B. Crowley | Democratic | 19th | 1899–1903 | |
| 23rd | 1903–1905 | |||
| William Cullen | Republican | 7th | 1881–1883 | |
| 8th | 1883–1885 | |||
| Shelby M. Cullom | Republican | 8th | 1865–1871 | |
| Thomas Cusack | Democratic | 4th | 1899–1901 | |
| Danny K. Davis | Democratic | 7th | 1997–present | |
| George R. Davis | Republican | 2nd | 1879–1883 | |
| 3rd | 1883–1885 | |||
| Jack Davis | Republican | 4th | 1987–1989 | |
| Jacob C. Davis | Democratic | 5th | 1856–1857 | |
| William L. Dawson | Democratic | 1st | 1943–1970 | |
| Stephen A. Day | Republican | At-large | 1941–1945 | |
| Oscar De Priest | Republican | 1st | 1929–1935 | |
| Edward E. Denison | Republican | 25th | 1915–1931 | |
| Edward J. Derwinski | Republican | 4th | 1959–1983 | |
| Charles S. Dewey | Republican | 9th | 1941–1945 | |
| Frank S. Dickson | Republican | 23rd | 1905–1907 | |
| William H. Dieterich | Democratic | At-large | 1931–1933 | |
| Everett M. Dirksen | Republican | 16th | 1933–1949 | |
| Donald C. Dobbins | Democratic | 19th | 1933–1937 | |
| Robert Dold | Republican | 10th | 2011-2013 | |
| Emily Taft Douglas | Democratic | At-large | 1945–1947 | |
| Stephen A. Douglas | Democratic | 5th | 1843–1847 | |
| Finis E. Downing | Democratic | 16th | 1895–1896 | |
| Thomas A. Doyle | Democratic | 4th | 1923–1931 | |
| Joseph Duncan | Democratic | At-large | 1827–1833 | |
| 3rd | 1833–1834 | |||
| Tammy Duckworth | Democratic | 8th | 2013-present | |
| Ransom W. Dunham | Republican | 1st | 1883–1889 | |
| Richard J. Durbin | Democratic | 20th | 1983–1997 | |
| Allan C. Durborow, Jr. | Democratic | 3rd | 1891–1895 | |
| John R. Eden | Democratic | 7th | 1863–1865 | |
| 15th | 1873–1879 | |||
| 17th | 1885–1887 | |||
| Reuben Ellwood | Republican | 5th | 1883–1885 | |
| Rahm Emanuel | Democratic | 5th | 2003–2009 | |
| Martin Emerich | Democratic | 1st | 1903–1905 | |
| John N. Erlenborn | Republican | 14th | 1965–1983 | |
| 13th | 1983–1985 | |||
| Lane Evans | Democratic | 17th | 1983–2007 | |
| Lynden Evans | Democratic | 9th | 1911–1913 | |
| Thomas W. Ewing | Republican | 15th | 1991–2001 | |
| John F. Farnsworth | Republican | 2nd | 1857–1861 1863–1873 |
|
| Charles B. Farwell | Republican | 1st | 1871–1873 | |
| 3rd | 1873–1876 1881–1883 |
|||
| John G. Fary | Democratic | 5th | 1975–1983 | |
| Harris W. Fawell | Republican | 13th | 1985–1999 | |
| John J. Feely | Democratic | 2nd | 1901–1903 | |
| Orlando B. Ficklin | Democratic | 3rd | 1843–1849 1851–1853 |
|
| Paul Findley | Republican | 20th | 1961–1983 | |
| John F. Finerty | Independent Democrat | 2nd | 1883–1885 | |
| Edward R. Finnegan | Democratic | 12th | 1961–1963 | |
| 9th | 1963–1964 | |||
| George W. Fithian | Democratic | 16th | 1889–1895 | |
| Louis Fitzhenry | Democratic | 17th | 1913–1915 | |
| Michael Patrick Flanagan | Republican | 5th | 1995–1997 | |
| William St. John Forman | Democratic | 18th | 1889–1895 | |
| Albert P. Forsythe | Greenbacker | 15th | 1879–1881 | |
| Greenbury L. Fort | Republican | 8th | 1873–1881 | |
| George E. Foss | Republican | 7th | 1895–1903 | |
| 10th | 1903–1913 1915–1919 |
|||
| Bill Foster | Democratic | 14th | 2008–2011 | |
| 11th | 2013-present | |||
| George P. Foster | Democratic | 3rd | 1899–1903 | |
| 4th | 1903–1905 | |||
| Martin D. Foster | Democratic | 23rd | 1907–1919 | |
| Philip B. Fouke | Democratic | 8th | 1859–1863 | |
| H. Robert Fowler | Democratic | 24th | 1911–1915 | |
| Frank W. Fries | Democratic | 21st | 1937–1941 | |
| Charles Eugene Fuller | Republican | 12th | 1903–1913 1915–1926 |
|
| Benjamin F. Funk | Republican | 14th | 1893–1895 | |
| Frank H. Funk | Republican | 17th | 1921–1927 | |
| Thomas Gallagher | Democratic | 8th | 1909–1921 | |
| William H. Gest | Republican | 11th | 1887–1891 | |
| Frank Gillespie | Democratic | 17th | 1933–1935 | |
| Julius Goldzier | Democratic | 4th | 1893–1895 | |
| Thomas S. Gordon | Democratic | 8th | 1943–1959 | |
| George E. Gorman | Democratic | 3rd | 1913–1915 | |
| John J. Gorman | Republican | 6th | 1921–1923 1925–1927 |
|
| Martin Gorski | Democratic | 4th | 1943–1949 | |
| 5th | 1949 | |||
| Joseph V. Graff | Republican | 14th | 1895–1903 | |
| 16th | 1903–1911 | |||
| James M. Graham | Democratic | 21st | 1909–1915 | |
| William J. Graham | Republican | 14th | 1917–1924 | |
| Peter C. Granata | Republican | 8th | 1931–1932 | |
| Kenneth J. Gray | Democratic | 25th | 1955–1963 | |
| 21st | 1963–1974 | |||
| 24th | 1973–1974 | |||
| 22nd | 1985–1989 | |||
| John E. Grotberg | Republican | 14th | 1985–1986 | |
| Luis V. Gutierrez | Democratic | 4th | 1993–present | |
| William F.L. Hadley | Republican | 18th | 1895–1897 | |
| Homer W. Hall | Republican | 17th | 1927–1933 | |
| Tim Lee Hall | Democratic | 15th | 1975–1977 | |
| Debbie Halvorson | Democratic | 11th | 2009–2011 | |
| Robert P. Hanrahan | Republican | 3rd | 1973–1975 | |
| John J. Hardin | Whig | 7th | 1843–1845 | |
| Abner C. Harding | Republican | 4th | 1865–1869 | |
| Philip Hare | Democratic | 17th | 2007–2011 | |
| Charles M. Harris | Democratic | 4th | 1863–1865 | |
| Thomas L. Harris | Democratic | 7th | 1849–1851 | |
| 6th | 1855–1858 | |||
| Carter H. Harrison | Democratic | 2nd | 1875–1879 | |
| William Hartzell | Democratic | 18th | 1875–1879 | |
| J. Dennis Hastert | Republican | 14th | 1987–2007 | |
| Robert M. A. Hawk | Republican | 5th | 1879–1882 | |
| John B. Hawley | Republican | 4th | 1869–1873 | |
| 6th | 1873–1875 | |||
| John B. Hay | Republican | 12th | 1869–1873 | |
| Charles A. Hayes | Democratic | 1st | 1983–1993 | |
| Philip C. Hayes | Republican | 7th | 1877–1881 | |
| James V. Heidinger | Republican | 24th | 1941–1945 | |
| Thomas J. Henderson | Republican | 6th | 1875–1883 | |
| 7th | 1883–1895 | |||
| John Henry | Whig | 7th | 1847 | |
| Charles A. Hill | Republican | 8th | 1889–1891 | |
| Robert P. Hill | Democratic | 25th | 1913–1915 | |
| William H. Hinebaugh | Progressive | 12th | 1913–1915 | |
| William H. Hinrichsen | Democratic | 16th | 1897–1899 | |
| Robert R. Hitt | Republican | 5th | 1882–1883 | |
| 6th | 1883–1895 | |||
| 9th | 1895–1903 | |||
| 14th | 1903–1906 | |||
| Charles D. Hodges | Democratic | 6th | 1859 | |
| Elmer J. Hoffman | Republican | 14th | 1959–1965 | |
| Richard W. Hoffman | Republican | 10th | 1949–1957 | |
| Joseph P. Hoge | Democratic | 6th | 1843–1847 | |
| William P. Holaday | Republican | 18th | 1923–1933 | |
| Albert J. Hopkins | Republican | 5th | 1885–1895 | |
| 8th | 1895–1903 | |||
| George Evan Howell | Republican | 21st | 1941–1948 | |
| Stephen A. Hoxworth | Democratic | 15th | 1913–1915 | |
| Winnifred S.M. Huck | Republican | At-large | 1922–1923 | |
| Morton D. Hull | Republican | 2nd | 1923–1933 | |
| William E. Hull | Republican | 16th | 1923–1933 | |
| Randy Hultgren | Republican | 14th | 2011–present | |
| Andrew J. Hunter | Democratic | At-large | 1893–1895 | |
| 19th | 1897–1899 | |||
| Stephen A. Hurlbut | Republican | 4th | 1873–1877 | |
| Henry J. Hyde | Republican | 6th | 1975–2007 | |
| James T. Igoe | Democratic | 6th | 1927–1933 | |
| Michael L. Igoe | Democratic | At-large | 1935–1937 | |
| Ebon C. Ingersoll | Republican | 5th | 1863–1871 | |
| Clifford C. Ireland | Republican | 16th | 1917–1923 | |
| Edward M. Irwin | Republican | 22nd | 1925–1931 | |
| Jesse L. Jackson, Jr. | Democratic | 2nd | 1995–2012 | |
| Edward H. Jenison | Republican | 18th | 1947–1949 | |
| 23rd | 1949–1953 | |||
| Thomas M. Jett | Democratic | 18th | 1897–1903 | |
| Anton J. Johnson | Republican | 14th | 1939–1949 | |
| Calvin D. Johnson | Republican | 22nd | 1943–1945 | |
| Timothy V. Johnson | Republican | 15th | 2001–2013 | |
| William Richard Johnson | Republican | 13th | 1925–1933 | |
| Edgar A. Jonas | Republican | 12th | 1949–1955 | |
| Norman B. Judd | Republican | 1st | 1867–1871 | |
| Niels Juul | Republican | 7th | 1917–1921 | |
| Charles A. Karch | Democratic | 22nd | 1931–1932 | |
| Russell W. Keeney | Republican | 14th | 1957–1958 | |
| Kent E. Keller | Democratic | 25th | 1931–1941 | |
| William Kellogg | Republican | 4th | 1857–1863 | |
| Edward A. Kelly | Democratic | 3rd | 1931–1943 1945–1947 |
|
| Fred J. Kern | Democratic | 21st | 1901–1903 | |
| Edward John King | Republican | 15th | 1915–1929 | |
| Adam Kinzinger | Republican | 11th | 2011–2013 | |
| 16th | 2013-present | |||
| Mark Kirk | Republican | 10th | 2001–2010 | |
| John C. Kluczynski | Democratic | 5th | 1951–1975 | |
| Anthony L. Knapp | Democratic | 6th | 1861–1863 | |
| 10th | 1863–1865 | |||
| Robert M. Knapp | Democratic | 11th | 1873–1875 1877–1879 |
|
| Philip Knopf | Republican | 7th | 1903–1909 | |
| James Knox | Whig | 4th | 1853–1855 | |
| Oppositionist | 1855–1857 | |||
| Leo Kocialkowski | Democratic | 8th | 1933–1943 | |
| Stanley H. Kunz | Democratic | 8th | 1921–1933 | |
| Andrew J. Kuykendall | Republican | 13th | 1865–1867 | |
| Ray LaHood | Republican | 18th | 1995–2009 | |
| Silas Z. Landes | Democratic | 16th | 1885–1889 | |
| Edward Lane | Democratic | 17th | 1887–1895 | |
| William Lathrop | Republican | 4th | 1877–1879 | |
| Frank Lawler | Democratic | 2nd | 1885–1891 | |
| John V. Le Moyne | Democratic | 3rd | 1876–1877 | |
| John H. Lewis | Republican | 9th | 1881–1883 | |
| Roland V. Libonati | Democratic | 7th | 1957–1965 | |
| Abraham Lincoln | Whig | 7th | 1847–1849 | |
| Neil J. Linehan | Democratic | 3rd | 1949–1951 | |
| William W. Link | Democratic | 7th | 1949–1947 | |
| William O. Lipinski | Democratic | 5th | 1983–1993 | |
| 3rd | 1993–2005 | |||
| Dan Lipinski | Democratic | 3rd | 2005–present | |
| John A. Logan | Democratic | 9th | 1859–1862 | |
| Republican | At-large | 1867–1871 | ||
| Lewis M. Long | Democratic | At-large | 1937–1939 | |
| William Lorimer | Republican | 2nd | 1895–1901 | |
| 6th | 1903–1909 | |||
| Owen Lovejoy | Republican | 3rd | 1857–1863 | |
| 5th | 1863–1864 | |||
| Frank O. Lowden | Republican | 13th | 1906–1911 | |
| Scott W. Lucas | Democratic | 20th | 1935–1939 | |
| Frederick Lundin | Republican | 7th | 1909–1911 | |
| A. F. Maciejewski | Democratic | 6th | 1939–1942 | |
| Peter F. Mack, Jr. | Democratic | 21st | 1949–1963 | |
| Martin B. Madden | Republican | 1st | 1905–1928 | |
| Edward Rell Madigan | Republican | 21st | 1973–1983 | |
| 15th | 1983–1991 | |||
| William F. Mahoney | Democratic | 5th | 1901–1903 | |
| 8th | 1903–1904 | |||
| J. Earl Major | Democratic | 21st | 1923–1925 1927–1929 1931–1933 |
|
| James R. Mann | Republican | 1st | 1897–1903 | |
| 2nd | 1903–1922 | |||
| Donald A. Manzullo | Republican | 16th | 1993–2013 | |
| Benjamin F. Marsh | Republican | 10th | 1877–1883 | |
| 11th | 1893–1895 | |||
| 15th | 1895–1901 | |||
| 14th | 1903–1905 | |||
| Samuel S. Marshall | Democratic | 9th | 1855–1859 | |
| 11th | 1865–1873 | |||
| 19th | 1873–1875 | |||
| Charles Martin | Democratic | 4th | 1917 | |
| James S. Martin | Republican | 16th | 1873–1875 | |
| John C. Martin | Democratic | At-large | 1939–1941 | |
| Lynn Morley Martin | Republican | 16th | 1981–1991 | |
| Harry H. Mason | Democratic | 21st | 1935–1937 | |
| Noah M. Mason | Republican | 12th | 1937–1949 | |
| 15th | 1949–1963 | |||
| William E. Mason | Republican | 3rd | 1887–1891 | |
| At-large | 1917–1921 | |||
| William L. May | Democratic | 3rd | 1834–1839 | |
| James McAndrews | Democratic | 4th | 1901–1903 | |
| 5th | 1903–1905 | |||
| 6th | 1913–1921 | |||
| 9th | 1935–1941 | |||
| John A. McClernand | Democratic | 2nd | 1843–1851 | |
| 6th | 1859–1861 | |||
| Robert McClory | Republican | 12th | 1963–1973 | |
| 13th | 1973–1983 | |||
| Joseph M. McCormick | Republican | At-large | 1917–1919 | |
| Ruth H. McCormick | Republican | At-large | 1929–1931 | |
| John J. McDannold | Democratic | 12th | 1893–1895 | |
| James T. McDermott | Democratic | 4th | 1907–1917 | |
| Lawrence E. McGann | Democratic | 2nd | 1891–1895 | |
| 3rd | 1895 | |||
| Charles McGavin | Republican | 8th | 1905–1909 | |
| John C. McKenzie | Republican | 13th | 1911–1925 | |
| Raymond S. McKeough | Democratic | 2nd | 1935–1943 | |
| William B. McKinley | Republican | 19th | 1905–1913 1915–1921 |
|
| James McKinney | Republican | 14th | 1905–1913 | |
| John McLean | At-large | 1818–1819 | ||
| Robert T. McLoskey | Republican | 19th | 1963–1965 | |
| Rolla C. McMillen | Republican | 19th | 1944–1949 | |
| 22nd | 1949–1951 | |||
| Thompson W. McNeely | Democratic | 9th | 1869–1873 | |
| John McNulta | Republican | 13th | 1873–1875 | |
| William E. McVey | Republican | 4th | 1951–1958 | |
| James A. Meeks | Democratic | 18th | 1933–1939 | |
| Ralph H. Metcalfe | Democratic | 1st | 1971–1978 | |
| M. Alfred Michaelson | Republican | 7th | 1921–1931 | |
| Anthony Michalek | Republican | 5th | 1905–1907 | |
| Robert H. Michel | Republican | 18th | 1957–1995 | |
| J. Ross Mickey | Democratic | 15th | 1901–1903 | |
| Abner J. Mikva | Democratic | 2nd | 1969–1973 | |
| 10nd | 1975–1979 | |||
| Edward E. Miller | Republican | 22nd | 1923–1925 | |
| Daniel W. Mills | Republican | 4th | 1897–1899 | |
| Arthur W. Mitchell | Democratic | 1st | 1935–1943 | |
| Richard S. Molony | Democratic | 4th | 1851–1853 | |
| Allen F. Moore | Republican | 19th | 1921–1925 | |
| Jeese H. Moore | Republican | 7th | 1869–1873 | |
| Isaac N. Morris | Democratic | 5th | 1857–1861 | |
| James L.D. Morrison | Democratic | 8th | 1856–1857 | |
| William R. Morrison | Democratic | 12th | 1863–1865 | |
| 17th | 1873–1883 | |||
| 18th | 1883–1887 | |||
| Samuel W. Moulton | Republican | At-large | 1865–1867 | |
| Democratic | 15th | 1881–1883 | ||
| 17th | 1883–1885 | |||
| William J. Moxley | Republican | 6th | 1909–1911 | |
| P. H. Moynihan | Republican | 2nd | 1933–1935 | |
| Everett J. Murphy | Republican | 21st | 1895–1897 | |
| Morgan F. Murphy | Democratic | 3rd | 1971–1983 | |
| 2nd | 1973–1981 | |||
| William T. Murphy | Democratic | 3rd | 1959–1971 | |
| James C. Murray | Democratic | 3rd | 1955–1957 | |
| William H. Neece | Democratic | 11th | 1883–1887 | |
| Walter Nesbit | Democratic | At-large | 1933–1935 | |
| Walter C. Newberry | Democratic | 4th | 1891–1893 | |
| Edward T. Noonan | Democratic | 5th | 1899–1901 | |
| Jesse O. Norton | Whig | 3rd | 1853–1855 | |
| Oppositionist | 1855–1857 | |||
| Republican | 6th | 1863–1865 | ||
| George M. O'Brien | Republican | 17th | 1973–1983 | |
| 4th | 1983–1986 | |||
| Thomas J. O'Brien | Democratic | 6th | 1933–1939 1943–1964 |
|
| Frank T. O'Hair | Democratic | 18th | 1913–1915 | |
| Barratt O'Hara | Democratic | 2nd | 1949–1951 1953–1969 |
|
| Thomas L. Owens | Republican | 7th | 1947–1948 | |
| George A. Paddock | Republican | 10th | 1941–1943 | |
| Claude V. Parsons | Democratic | 24th | 1930–1941 | |
| Lewis E. Payson | Republican | 8th | 1881–1893 | |
| 9th | 1883–1891 | |||
| David D. Phelps | Democratic | 19th | 1999–2003 | |
| Ralph Plumb | Republican | 8th | 1885–1889 | |
| Nathaniel Pope | (Illinois territory) |
1817–1818 | ||
| John Edward Porter | Republican | 10th | 1980–2001 | |
| Glenn Poshard | Democratic | 22nd | 1989–1993 | |
| 19th | 1993–1999 | |||
| Philip S. Post | Republican | 10th | 1887–1895 | |
| Melvin Price | Democratic | 22nd | 1945–1949 | |
| 25th | 1949–1953 | |||
| 24th | 1953–1973 | |||
| 23rd | 1973–1983 | |||
| 21st | 1983–1988 | |||
| George W. Prince | Republican | 10th | 1895–1903 | |
| 15th | 1903–1913 | |||
| Roman C. Pucinski | Democratic | 11th | 1959–1973 | |
| Michael Quigley | Democratic | 5th | 2009–present | |
| Tom Railsback | Republican | 19th | 1967–1983 | |
| Henry T. Rainey | Democratic | 20th | 1903–1921 1923–1934 |
|
| John W. Rainey | Democratic | 4th | 1918–1923 | |
| Frank M. Ramey | Republican | 21st | 1929–1931 | |
| Henry Riggs Rathbone | Republican | At-large | 1923–1928 | |
| Green B. Raum | Republican | 13th | 1867–1869 | |
| William H. Ray | Republican | 10th | 1873–1875 | |
| Chauncey W. Reed | Republican | 11th | 1935–1949 | |
| 14th | 1949–1956 | |||
| Walter Reeves | Republican | 11th | 1895–1903 | |
| Charlotte T. Reid | Republican | 15th | 1963–1971 | |
| Frank R. Reid | Republican | 11th | 1923–1935 | |
| Frederick Remann | Republican | 18th | 1895 | |
| Alexander J. Resa | Democratic | 9th | 1945–1947 | |
| John Reynolds | Democratic | 1st | 1834–1837 1839–1843 |
|
| Mel Reynolds | Democratic | 2nd | 1993–1995 | |
| Edward Y. Rice | Democratic | 10th | 1871–1873 | |
| John B. Rice | Republican | 1st | 1873–1874 | |
| William A. Richardson | Democratic | 5th | 1847–1856 1861–1863 |
|
| James M. Riggs | Democratic | 12th | 1883–1887 | |
| Hugh M. Rigney | Democratic | 19th | 1937–1939 | |
| John I. Rinaker | Republican | 16th | 1896–1897 | |
| Zeno J. Rives | Republican | 21st | 1905–1907 | |
| James C. Robinson | Democratic | 7th | 1859–1863 | |
| 11th | 1863–1865 | |||
| 8th | 1871–1873 | |||
| 12th | 1873–1875 | |||
| William A. Rodenberg | Republican | 21st | 1899–1901 | |
| 22nd | 1903–1913 1915–1923 |
|||
| Daniel J. Ronan | Democratic | 6th | 1965–1969 | |
| Peter Roskam | Republican | 6th | 2007–present | |
| Lewis W. Ross | Democratic | 9th | 1863–1869 | |
| Dan Rostenkowski | Democratic | 8th | 1959–1993 | |
| 5th | 1993–1995 | |||
| William A. Rowan | Democratic | 2nd | 1943–1947 | |
| Jonathan H. Rowell | Republican | 14th | 1883–1891 | |
| Donald Rumsfeld | Republican | 13th | 1963–1969 | |
| Bobby Rush | Democratic | 1st | 1993–present | |
| Marty Russo | Democratic | 3rd | 1975–1993 | |
| Adolph J. Sabath | Democratic | 5th | 1907–1949 | |
| 7th | 1949–1952 | |||
| George E. Sangmeister | Democratic | 4th | 1989–1993 | |
| 11th | 1993–1995 | |||
| Gus Savage | Democratic | 2nd | 1981–1993 | |
| Edwin M. Schaefer | Democratic | 22nd | 1933–1943 | |
| Janice D. Schakowsky | Democratic | 9th | 1999–present | |
| Bobby Schilling | Republican | 17th | 2011–2013 | |
| Gale Schisler | Democratic | 19th | 1965–1967 | |
| Brad Schneider | Democratic | 10th | 2013-present | |
| Aaron Schock | Republican | 18th | 2009–present | |
| Leonard W. Schuetz | Democratic | 7th | 1931–1944 | |
| Owen Scott | Democratic | 14th | 1891–1893 | |
| Thomas J. Selby | Democratic | 16th | 1901–1903 | |
| Aaron Shaw | Democratic | 7th | 1857–1859 | |
| 16th | 1883–1885 | |||
| Guy L. Shaw | Republican | 20th | 1921–1923 | |
| Timothy P. Sheehan | Republican | 11th | 1951–1959 | |
| John C. Sherwin | Republican | 4th | 1879–1883 | |
| John Shimkus | Republican | 20th | 1997–2003 | |
| 19th | 2003–2013 | |||
| 15th | 2013-present | |||
| George E. Shipley | Democratic | 22nd | 1959–1979 | |
| Paul Simon | Democratic | 24th | 1975–1983 | |
| 22nd | 1983–1985 | |||
| Edna O. Simpson | Republican | 20th | 1959–1961 | |
| James Simpson, Jr. | Republican | 10th | 1933–1935 | |
| Sid Simpson | Republican | 20th | 1943–1958 | |
| James W. Singleton | Democratic | 11th | 1879–1883 | |
| Charles Slade | Democratic | 1st | 1833–1834 | |
| Dietrich C. Smith | Republican | 13th | 1881–1883 | |
| Frank L. Smith | Republican | 17th | 1919–1921 | |
| George W. Smith | Republican | 20th | 1889–1895 | |
| 22nd | 1895–1903 | |||
| 25th | 1903–1907 | |||
| Robert Smith | Democratic | 1st | 1843–1847 | |
| Independent Democrat | 1847–1849 | |||
| Democratic | 8th | 1857–1859 | ||
| Thomas V. Smith | Democratic | At-large | 1939–1941 | |
| Henry Snapp | Republican | 6th | 1871–1873 | |
| Howard M. Snapp | Republican | 11th | 1903–1911 | |
| Herman W. Snow | Democratic | 9th | 1891–1893 | |
| Adam W. Snyder | Democratic | 1st | 1837–1839 | |
| William A.J. Sparks | Democratic | 16th | 1875–1883 | |
| William L. Springer | Republican | 22nd | 1951–1973 | |
| William M. Springer | Democratic | 12th | 1875–1883 | |
| 12th | 1883–1895 | |||
| Elliott W. Sproul | Republican | 3rd | 1921–1931 | |
| Edmund J. Stack | Democratic | 6th | 1911–1913 | |
| Benjamin Stephenson | (Illinois territory) |
1814–1817 | ||
| John A. Sterling | Republican | 17th | 1903–1913 1915–1918 |
|
| Bradford N. Stevens | Democratic | 5th | 1871–1873 | |
| Adlai E. Stevenson | Democratic | 13th | 1875–1877 1879–1881 |
|
| Lewis Steward | Democratic | 8th | 1891–1893 | |
| Bennett M. Stewart | Democratic | 1st | 1979–1981 | |
| Claude U. Stone | Democratic | 16th | 1911–1917 | |
| William Stratton | Republican | At-large | 1941–1943 1947–1949 |
|
| Lawrence B. Stringer | Democratic | At-large | 1913–1915 | |
| John T. Stuart | Whig | 3rd | 1839–1843 | |
| Democratic | 8th | 1863–1865 | ||
| Jessie Sumner | Republican | 18th | 1939–1947 | |
| Clyde H. Tavenner | Democratic | 14th | 1913–1917 | |
| Abner Taylor | Republican | 1st | 1889–1893 | |
| Napoleon B. Thistlewood | Republican | 25th | 1908–1913 | |
| John R. Thomas | Republican | 18th | 1879–1883 | |
| 20th | 1883–1889 | |||
| Chester Thompson | Democratic | 14th | 1933–1939 | |
| Charles M. Thomson | Progressive | 10th | 1913–1915 | |
| Anthony Thornton | Democratic | 10th | 1865–1867 | |
| Thomas F. Tipton | Republican | 13th | 1877–1879 | |
| Richard W. Townshend | Democratic | 19th | 1877–1889 | |
| Thomas J. Turner | Democratic | 6th | 1847–1849 | |
| Robert J. Twyman | Republican | 9th | 1947–1949 | |
| Richard B. Vail | Republican | 2nd | 1947–1949 1951–1953 |
|
| Harold H. Velde | Republican | 18th | 1949–1957 | |
| Charles W. Vursell | Republican | 23rd | 1943–1949 | |
| 24th | 1949–1953 | |||
| 23rd | 1953–1959 | |||
| Joe Walsh | Republican | 8th | 2011–2013 | |
| James H. Ward | Democratic | 3rd | 1885–1887 | |
| Jasper D. Ward | Republican | 2nd | 1873–1875 | |
| Vespasian Warner | Republican | 13th | 1895–1903 | |
| 19th | 1903–1905 | |||
| Elihu B. Washburne | Whig | 1st | 1853–1855 | |
| Republican | 1855–1863 | |||
| 3rd | 1863–1869 | |||
| Harold Washington | Democratic | 1st | 1981–1983 | |
| Jerry Weller | Republican | 11th | 1995–2009 | |
| John Wentworth | Democratic | 4th | 1843–1851 | |
| 2nd | 1853–1855 | |||
| Republican | 1st | 1865–1867 | ||
| Charles S. Wharton | Republican | 4th | 1905–1907 | |
| William H. Wheat | Republican | 19th | 1939–1944 | |
| Hamilton K. Wheeler | Republican | 9th | 1893–1895 | |
| Loren E. Wheeler | Republican | 21st | 1915–1923 1925–1927 |
|
| George E. White | Republican | 5th | 1895–1899 | |
| Richard H. Whiting | Republican | 9th | 1875–1877 | |
| Scott Wike | Democratic | 11th | 1875–1877 | |
| 12th | 1889–1893 | |||
| James R. Williams | Democratic | 19th | 1889–1895 | |
| 20th | 1899–1903 | |||
| 24th | 1903–1905 | |||
| Thomas S. Williams | Republican | 24th | 1915–1929 | |
| William E. Williams | Democratic | 16th | 1899–1901 | |
| At-large | 1913–1917 | |||
| William W. Wilson | Republican | 3rd | 1903–1913 1915–1921 |
|
| Benson Wood | Republican | 19th | 1895–1897 | |
| Charles W. Woodman | Republican | 4th | 1895–1897 | |
| James H. Woodworth | Republican | 2nd | 1855–1857 | |
| Nicholas E. Worthington | Democratic | 10th | 1883–1887 | |
| Richard Yates | Whig | 7th | 1851–1853 | |
| 6th | 1853–1855 | |||
| Richard Yates | Republican | At-large | 1919–1933 | |
| Sidney R. Yates | Democratic | 9th | 1949–1963 1965–1999 |
|
| Samuel H. Young | Republican | 10th | 1973–1975 | |
| Timothy R. Young | Democratic | 3rd | 1849–1851 | |
| Representative | Party | District | Service | Notes |
|
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