List of United States representatives from Iowa
The following is an alphabetical list of members of the United States House of Representatives from the state of Iowa. 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 Iowa. The list of names should be complete, but other data may be incomplete.
Current members
Updated January 3, 2023.
- 1st district: Mariannette Miller-Meeks (R, since 2021)
- 2nd district: Ashley Hinson (R, since 2021)
- 3rd district: Zach Nunn (R, since 2023)
- 4th district: Randy Feenstra (R, since 2021)
List of members and delegates
| Member / Delegate | Years | Party | District | Electoral history |
|---|---|---|---|---|
| Lucien Lester Ainsworth | March 4, 1875 – March 3, 1877 |
Democratic | 3rd | Elected in 1874. Retired. |
| William B. Allison | March 4, 1863 – March 3, 1871 |
Republican | 3rd | Elected in 1862. Retired to run for U.S. senator. |
| Albert R. Anderson | March 4, 1887 – March 3, 1889 |
Independent Republican | 8th | Elected in 1886. Lost re-election to Flick. |
| Cindy Axne | January 3, 2019 – January 3, 2023 |
Democratic | 3rd | Elected in 2018. Lost re-election to Nunn. |
| Bert Bandstra | January 3, 1965 – January 3, 1967 |
Democratic | 4th | Elected in 1964. Lost re-election to Kyl. |
| Berkley Bedell | January 3, 1975 – January 3, 1987 |
Democratic | 6th | Elected in 1974. Retired. |
| Fred Biermann | March 4, 1933 – January 3, 1939 |
Democratic | 4th | Elected in 1932. Lost re-election to Talle. |
| Benjamin P. Birdsall | March 4, 1903 – March 3, 1909 |
Republican | 3rd | Elected in 1902. Retired. |
| Mike Blouin | January 3, 1975 – January 3, 1979 |
Democratic | 2nd | Elected in 1974. Lost re-election to Tauke. |
| Rod Blum | January 3, 2015 – January 3, 2019 |
Republican | 1st | Elected in 2014. Lost re-election to Finkenauer. |
| William D. Boies | March 4, 1919 – March 3, 1929 |
Republican | 11th | Elected in 1918. Retired. |
| Leonard Boswell | January 3, 1997 – January 3, 2013 |
Democratic | 3rd | Elected in 1996. Lost re-election to Latham. |
| Thomas Bowman | March 4, 1891 – March 3, 1893 |
Democratic | 9th | Elected in 1890. Retired. |
| Bruce Braley | January 3, 2007 – January 3, 2015 |
Democratic | 1st | Elected in 2006. Retired to run for U.S. senator. |
| James E. Bromwell | January 3, 1961 – January 3, 1965 |
Republican | 2nd | Elected in 1960. Lost re-election to Culver. |
| Theodore W. Burdick | March 4, 1877 – March 3, 1879 |
Republican | 3rd | Elected in 1876. Retired. |
| Walter H. Butler | March 4, 1891 – March 3, 1893 |
Democratic | 4th | Elected in 1890. Lost re-election to Updegraff. |
| Ed H. Campbell | March 4, 1929 – March 3, 1933 |
Republican | 11th | Elected in 1928. Redistricted to the 9th district and lost re-election to G. Gillette. |
| Cyrus C. Carpenter | March 4, 1879 – March 3, 1883 |
Republican | 9th | Elected in 1878. Retired. |
| Steven V. Carter | January 3, 1959 – November 4, 1959 |
Democratic | 4th | Elected in 1958. Died. |
| William W. Chapman | September 10, 1838 – October 27, 1840 |
Democratic | Territory | Elected in 1838. Term expired per act of Congress. |
| Lincoln Clark | March 4, 1851 – March 3, 1853 |
Democratic | 2nd | Elected in 1850. Lost re-election to J.P. Cook. |
| Rush Clark | March 4, 1877 – April 29, 1879 |
Republican | 5th | Elected in 1876. Died. |
| Samuel M. Clark | March 4, 1895 – March 3, 1899 |
Republican | 1st | Elected in 1894. Retired. |
| Merwin Coad | January 3, 1957 – January 3, 1963 |
Democratic | 6th | Elected in 1956. Retired. |
| Cyrenus Cole | August 1, 1921 – March 3, 1933 |
Republican | 5th | Elected to finish Good's term. Redistricted to 2nd district but retired. |
| Edwin H. Conger | March 4, 1885 – October 3, 1890 |
Republican | 7th | Elected in 1884. Resigned after being appointed U.S. Ambassador to Brazil. |
| James P. Conner | December 4, 1900 – March 3, 1909 |
Republican | 10th | Elected in 1900. Lost renomination to Woods. |
| Maurice Connolly | March 4, 1913 – March 3, 1915 |
Democratic | 3rd | Elected in 1912. Retired to run for U.S. senator. |
| John C. Cook | March 3, 1883 – March 3, 1883 |
Democratic | 6th | Won contested election. Lost re-election to Cutts. |
| October 9, 1883 – March 3, 1885 |
Elected to finish Cutts's term. Lost re-election to Weaver. | |||
| John P. Cook | March 4, 1853 – March 3, 1855 |
Whig | 2nd | Elected in 1852. Retired. |
| Aylett R. Cotton | March 4, 1871 – March 3, 1875 |
Republican | 2nd | Elected in 1870. Lost renomination.[a] |
| Robert G. Cousins | March 4, 1893 – March 3, 1909 |
Republican | 5th | Elected in 1892. Retired. |
| John Culver | January 3, 1965 – January 3, 1975 |
Democratic | 2nd | Elected in 1964. Retired to run for U.S. senator. |
| Henry J. B. Cummings | March 4, 1877 – March 3, 1879 |
Republican | 7th | Elected in 1876. Lost re-election to E. Gillette. |
| Paul H. Cunningham | January 3, 1941 – January 3, 1943 |
Republican | 6th | Elected in 1940. Redistricted to the 5th district. |
| January 3, 1943 – January 3, 1959 |
5th | Redistricted from the 6th district and re-elected in 1942. Lost re-election to N. Smith. | ||
| George M. Curtis | March 4, 1895 – March 3, 1899 |
Republican | 2nd | Elected in 1894. Retired. |
| Samuel Curtis | March 4, 1857 – August 4, 1861 |
Republican | 1st | Elected in 1856. Resigned to serve in the Civil War. |
| Marsena E. Cutts | March 4, 1881 – March 3, 1883 |
Republican | 6th | Elected in 1880. Lost contested election to Cook. |
| March 4, 1883 – September 1, 1883 |
Elected in 1882. Died. | |||
| Timothy Davis | March 4, 1857 – March 3, 1859 |
Republican | 2nd | Elected in 1856. Retired. |
| Albert F. Dawson | March 4, 1905 – March 3, 1911 |
Republican | 2nd | Elected in 1904. Retired. |
| Nathaniel C. Deering | March 4, 1877 – March 3, 1883 |
Republican | 4th | Elected in 1876. Retired. |
| Lester J. Dickinson | March 4, 1919 – March 3, 1931 |
Republican | 10th | Elected in 1918. Retired to run for U.S. senator. |
| Augustus C. Dodge | October 28, 1840 – December 28, 1846 |
Democratic | Territory | Elected in 1840. Seat eliminated when statehood achieved. |
| Grenville M. Dodge | March 4, 1867 – March 3, 1869 |
Republican | 5th | Elected in 1866. Retired. |
| James I. Dolliver | January 3, 1945 – January 3, 1957 |
Republican | 6th | Elected in 1944. Lost re-election to Coad. |
| Jonathan P. Dolliver | March 4, 1889 – August 22, 1900 |
Republican | 10th | Elected in 1888. Resigned after being appointed to the U.S. Senate. |
| William G. Donnan | March 4, 1871 – March 3, 1875 |
Republican | 3rd | Elected in 1870. Retired. |
| Cassius C. Dowell | March 4, 1915 – March 3, 1933 |
Republican | 7th | Elected in 1914. Redistricted to the 6th district. |
| March 4, 1933 – January 3, 1935 |
6th | Redistricted from the 7th district and re-elected in 1932. Lost re-election to Utterback. | ||
| January 3, 1937 – February 4, 1940 |
Elected in 1936. Died. | |||
| Edward C. Eicher | March 4, 1933 – December 2, 1938 |
Democratic | 1st | Re-elected in 1932. Renominated but resigned to become commissioner of the Securities and Exchange Commission. |
| Hiram Kinsman Evans | June 4, 1923 – March 3, 1925 |
Republican | 8th | Elected to finish Towner's term. Retired. |
| T. Cooper Evans | January 3, 1981 – January 3, 1987 |
Republican | 3rd | Elected in 1980. Retired. |
| Sewall S. Farwell | March 4, 1881 – March 3, 1883 |
Republican | 2nd | Elected in 1880. Lost re-election to Murphy. |
| Randy Feenstra | January 3, 2021 – present |
Republican | 4th | Elected in 2020. |
| Abby Finkenauer | January 3, 2019 – January 3, 2021 |
Democratic | 1st | Elected in 2018. Lost re-election to Hinson. |
| James P. Flick | March 4, 1889 – March 3, 1893 |
Republican | 8th | Elected in 1888. Retired. |
| Benjamin T. Frederick | March 4, 1885 – March 3, 1887 |
Democratic | 5th | Won contested election.[b] Lost re-election to Kerr. |
| William E. Fuller | March 4, 1885 – March 3, 1889 |
Republican | 4th | Elected in 1884. Lost renomination to Sweney. |
| Greg Ganske | January 3, 1995 – January 3, 2003 |
Republican | 4th | Elected in 1994. Redistricted to the 3rd district but retired to run for U.S. senator. |
| John H. Gear | March 4, 1887 – March 3, 1891 |
Republican | 1st | Elected in 1886. Lost re-election to Seerley. |
| March 4, 1893 – March 3, 1895 |
Elected in 1892. Retired to run for U.S. Senator. | |||
| Fred C. Gilchrist | March 4, 1931 – March 3, 1933 |
Republican | 10th | Elected in 1930. Redistricted to the 8th district. |
| March 4, 1933 – January 3, 1943 |
8th | Redistricted from the 10th district and re-elected in 1932. Redistricted to the 6th district. | ||
| January 3, 1943 – January 3, 1945 |
6th | Redistricted from the 8th district and re-elected in 1942. Lost renomination to J.I. Dolliver. | ||
| Edward H. Gillette | March 4, 1879 – March 3, 1881 |
Greenback | 7th | Elected in 1878. Lost re-election to Kasson. |
| Guy Mark Gillette | March 4, 1933 – November 3, 1936 |
Democratic | 9th | Elected in 1932. Retired to run for U.S. senator and resigned when elected. |
| James William Good | March 4, 1909 – June 15, 1921 |
Republican | 5th | Elected in 1908. Resigned. |
| Robert K. Goodwin | March 5, 1940 – January 3, 1941 |
Republican | 6th | Elected to finish Dowell's term. Retired. |
| Fred Grandy | January 3, 1987 – January 3, 1993 |
Republican | 6th | Elected in 1986. Redistricted to the 5th district. |
| January 3, 1993 – January 3, 1995 |
5th | Redistricted from the 6th district and re-elected in 1992. Retired to run for governor. | ||
| Chuck Grassley | January 3, 1975 – January 3, 1981 |
Republican | 3rd | Elected in 1974. Retired to run for U.S. senator. |
| William R. Green | June 5, 1911 – March 31, 1928 |
Republican | 9th | Elected to finish Smith's term. Resigned after being appointed a judge of the United States Court of Claims. |
| Stanley L. Greigg | January 3, 1965 – January 3, 1967 |
Democratic | 6th | Elected in 1964. Lost re-election to Mayne. |
| Josiah B. Grinnell | March 4, 1863 – March 3, 1867 |
Republican | 4th | Elected in 1862. Lost renomination to Loughridge. |
| Harold R. Gross | January 3, 1949 – January 3, 1975 |
Republican | 3rd | Elected in 1948. Retired. |
| John W. Gwynne | January 3, 1935 – January 3, 1949 |
Republican | 3rd | Elected in 1934. Lost renomination to Gross. |
| Alva L. Hager | March 4, 1893 – March 3, 1899 |
Republican | 9th | Elected in 1892. Lost renomination to McPherson. |
| Augustus Hall | March 4, 1855 – March 3, 1857 |
Democratic | 1st | Elected in 1854. Lost re-election to S. Curtis. |
| Benton J. Hall | March 4, 1885 – March 3, 1887 |
Democratic | 1st | Elected in 1884. Lost re-election to Gear. |
| Daniel W. Hamilton | March 4, 1907 – March 3, 1909 |
Democratic | 6th | Elected in 1906. Lost re-election to Kendall. |
| John Taylor Hamilton | March 4, 1891 – March 3, 1893 |
Democratic | 5th | Elected in 1890. Lost re-election to Cousins. |
| John R. Hansen | January 3, 1965 – January 3, 1967 |
Democratic | 7th | Elected in 1964. Lost re-election to Scherle. |
| Tom Harkin | January 3, 1975 – January 3, 1985 |
Democratic | 5th | Elected in 1974. Retired to run for U.S. senator. |
| Vincent F. Harrington | March 4, 1937 – September 5, 1942 |
Democratic | 9th | Elected in 1936. Resigned to accept commission in the US Army. |
| S. Clinton Hastings | December 29, 1846 – March 3, 1847 |
Democratic | At-large | Elected in 1846. Retired. |
| Gilbert N. Haugen | March 4, 1899 – March 3, 1933 |
Republican | 4th | Elected in 1898. Lost re-election to Biermann. |
| Walter I. Hayes | March 4, 1887 – March 3, 1895 |
Democratic | 2nd | Elected in 1886. Lost re-election to G. Curtis. |
| Edward R. Hays | November 4, 1890 – March 3, 1891 |
Republican | 7th | Elected to finish Conger's term. Retired. |
| Thomas Hedge | March 4, 1899 – March 3, 1907 |
Republican | 1st | Elected in 1898. Retired. |
| David B. Henderson | March 4, 1883 – March 3, 1903 |
Republican | 3rd | Elected in 1882. Renominated but withdrew prior to election. |
| Bernhart Henn | March 4, 1851 – March 3, 1855 |
Democratic | 1st | Elected in 1850. Retired to run for U.S. senator. |
| William P. Hepburn | March 4, 1881 – March 3, 1887 |
Republican | 8th | Elected in 1880. Lost re-election to Anderson. |
| March 4, 1893 – March 3, 1909 |
Elected in 1892. Lost re-election to Jamieson. | |||
| Ashley Hinson | January 3, 2021 – January 3, 2023 |
Republican | 1st | Elected in 2020. Redistricted to the 2nd district. |
| January 3, 2023 – present |
2nd | Redistricted from the 1st district and re-elected in 2022. | ||
| Charles B. Hoeven | January 3, 1943 – January 3, 1963 |
Republican | 8th | Elected in 1942. Redistricted to the 6th district. |
| January 3, 1963 – January 3, 1965 |
6th | Redistricted from the 8th district and re-elected in 1962. Retired. | ||
| Adoniram J. Holmes | March 4, 1883 – March 3, 1889 |
Republican | 10th | Elected in 1882. Lost renomination to J.P. Dolliver. |
| Asahel W. Hubbard | March 4, 1863 – March 3, 1869 |
Republican | 6th | Elected in 1862. Retired. |
| Elbert H. Hubbard | March 4, 1905 – June 4, 1912 |
Republican | 11th | Elected in 1904. Died. |
| Harry E. Hull | March 4, 1915 – March 3, 1925 |
Republican | 2nd | Elected in 1914. Lost renomination to Letts. |
| John A. T. Hull | March 4, 1891 – March 3, 1911 |
Republican | 7th | Elected in 1890. Lost renomination to Prouty. |
| Bernhard M. Jacobsen | March 4, 1931 – June 30, 1936 |
Democratic | 2nd | Elected in 1930. Died. |
| William S. Jacobsen | January 3, 1937 – January 3, 1943 |
Democratic | 2nd | Elected in 1936. Lost re-election to Talle. |
| William Darius Jamieson | March 4, 1909 – March 3, 1911 |
Democratic | 8th | Elected in 1908. Retired. |
| Ben F. Jensen | January 3, 1939 – January 3, 1965 |
Republican | 7th | Elected in 1938. Lost re-election to Hansen. |
| John A. Kasson | March 4, 1863 – March 3, 1867 |
Republican | 5th | Elected in 1862. Lost renomination to G. Dodge. |
| March 4, 1873 – March 3, 1877 |
7th | Elected in 1872. Retired. | ||
| March 4, 1881 – July 31, 1884 |
Elected in 1880. Resigned after being appointed United States Ambassador to Germany. | |||
| Nathan E. Kendall | March 4, 1909 – March 3, 1913 |
Republican | 6th | Elected in 1908. Renominated but withdrew prior to election. |
| Charles A. Kennedy | March 4, 1907 – March 3, 1921 |
Republican | 1st | Elected in 1906. Retired. |
| Daniel Kerr | March 4, 1887 – March 3, 1891 |
Republican | 5th | Elected in 1886. Retired. |
| Steve King | January 3, 2003 – January 3, 2013 |
Republican | 5th | Elected in 2002. Redistricted to the 4th district. |
| January 3, 2013 – January 3, 2021 |
4th | Redistricted from the 5th district and re-elected in 2012. Lost renomination to Feenstra. | ||
| Sanford Kirkpatrick | March 4, 1913 – March 3, 1915 |
Democratic | 6th | Elected in 1912. Lost renomination to Ramseyer. |
| William F. Kopp | March 4, 1921 – March 3, 1933 |
Republican | 1st | Elected in 1920. Lost re-election to Eicher. |
| John Henry Kyl | December 15, 1959 – January 3, 1965 |
Republican | 4th | Elected to finish Carter's term. Lost re-election to Bandstra. |
| January 3, 1967 – January 3, 1973 |
Elected in 1966. Lost re-election to N. Smith. | |||
| John F. Lacey | March 4, 1889 – March 3, 1891 |
Republican | 6th | Elected in 1888. Lost re-election to White. |
| March 4, 1893 – March 3, 1907 |
Elected in 1892. Lost re-election to D. Hamilton. | |||
| Joseph R. Lane | March 4, 1899 – March 3, 1901 |
Republican | 2nd | Elected in 1898. Retired. |
| Tom Latham | January 3, 1995 – January 3, 2003 |
Republican | 5th | Elected in 1994. Redistricted to the 4th district. |
| January 3, 2003 – January 3, 2013 |
4th | Redistricted from the 5th district and re-elected in 2002. Redistricted to the 3rd district. | ||
| January 3, 2013 – January 3, 2015 |
3rd | Redistricted from the 4th district and re-elected in 2012. Retired. | ||
| Jim Leach | January 3, 1977 – January 3, 2003 |
Republican | 1st | Elected in 1976. Redistricted to the 2nd district. |
| January 3, 2003 – January 3, 2007 |
2nd | Redistricted from the 1st district and re-elected in 2002. Lost re-election to Loebsack. | ||
| Karl M. LeCompte | January 3, 1939 – January 3, 1943 |
Republican | 5th | Elected in 1938. Redistricted to the 4th district. |
| January 3, 1943 – January 3, 1959 |
4th | Redistricted from the 5th district and re-elected in 1942. Retired. | ||
| Shepherd Leffler | December 28, 1846 – March 3, 1847 |
Democratic | At-large | Elected in 1846. Redistricted to the 2nd district. |
| March 4, 1847 – March 3, 1851 |
2nd | Redistricted from the at-large district and re-elected in 1846. Retired. | ||
| F. Dickinson Letts | March 4, 1925 – March 3, 1931 |
Republican | 2nd | Elected in 1924. Lost re-election to B. Jacobsen. |
| Jim Ross Lightfoot | January 3, 1985 – January 3, 1993 |
Republican | 5th | Elected in 1984. Redistricted to the 3rd district. |
| January 3, 1993 – January 3, 1997 |
3rd | Redistricted from the 5th district and re-elected in 1992. Retired to run for U.S. senator. | ||
| Dave Loebsack | January 3, 2007 – January 3, 2021 |
Democratic | 2nd | Elected in 2006. Retired. |
| William Loughridge | March 4, 1867 – March 3, 1871 |
Republican | 4th | Elected in 1866. Lost renomination to Walden. |
| March 4, 1873 – March 3, 1875 |
6th | Elected in 1872. Lost renomination to Sampson. | ||
| Joseph Lyman | March 4, 1885 – March 3, 1889 |
Republican | 9th | Elected in 1884. Retired. |
| Thomas E. Martin | January 3, 1939 – January 3, 1955 |
Republican | 1st | Elected in 1938. Retired to run for U.S. Senator. |
| Wiley Mayne | January 3, 1967 – January 3, 1975 |
Republican | 6th | Elected in 1966. Lost re-election to Bedell. |
| Moses A. McCoid | March 4, 1879 – March 3, 1885 |
Republican | 1st | Elected in 1878. Lost renomination to John S. Woolson. |
| George W. McCrary | March 4, 1869 – March 3, 1877 |
Republican | 1st | Elected in 1868. Retired. |
| James W. McDill | March 4, 1873 – March 3, 1877 |
Republican | 8th | Elected in 1872. Retired. |
| Smith McPherson | March 4, 1899 – June 6, 1900 |
Republican | 9th | Elected in 1898. Resigned when appointed judge for the US District Court for the Southern District of Iowa. |
| Edward Mezvinsky | January 3, 1973 – January 3, 1977 |
Democratic | 1st | Elected in 1972. Lost re-election to Leach. |
| Daniel F. Miller | December 20, 1850 – March 3, 1851 |
Whig | 1st | Elected to finish Thompson's term. Retired. |
| Mariannette Miller-Meeks | January 3, 2021 – January 3, 2023 |
Republican | 2nd | Elected in 2020. Redistricted to the 1st district. |
| January 3, 2023 – present |
1st | Redistricted from the 2nd district and re-elected in 2022. | ||
| Jeremiah H. Murphy | March 4, 1883 – March 3, 1887 |
Democratic | 2nd | Elected in 1882. Lost renomination to Hayes. |
| David R. Nagle | January 3, 1987 – January 3, 1993 |
Democratic | 3rd | Elected in 1986. Redistricted to the 2nd district and lost re-election to Nussle. |
| Harry E. Narey | November 3, 1942 – January 3, 1943 |
Republican | 9th | Elected to finish Woodbury's term. Retired. |
| Zach Nunn | January 3, 2023 – present |
Republican | 3rd | Elected in 2022. |
| Jim Nussle | January 3, 1991 – January 3, 2003 |
Republican | 2nd | Elected in 1990. Redistricted to the 1st district. |
| January 3, 2003 – January 3, 2007 |
1st | Redistricted from the 2nd district and re-elected in 2002. Retired to run for governor. | ||
| S. Addison Oliver | March 4, 1875 – March 3, 1879 |
Republican | 9th | Elected in 1874. Retired. |
| Jackson Orr | March 4, 1871 – March 3, 1873 |
Republican | 6th | Elected in 1870. Redistricted to the 9th district. |
| March 4, 1873 – March 3, 1875 |
9th | Redistricted from the 6th district and re-elected in 1872. Retired. | ||
| Francis W. Palmer | March 4, 1869 – March 3, 1873 |
Republican | 5th | Elected in 1868. Retired. |
| Irvin S. Pepper | March 4, 1911 – December 22, 1913 |
Democratic | 2nd | Elected in 1910. Died. |
| George D. Perkins | March 4, 1891 – March 3, 1899 |
Republican | 11th | Elected in 1890. Lost renomination to Thomas. |
| Charles E. Pickett | March 4, 1909 – March 3, 1913 |
Republican | 3rd | Elected in 1908. Lost re-election to Connolly. |
| Charles Pomeroy | March 4, 1869 – March 3, 1871 |
Republican | 6th | Elected in 1868. Lost renomination to Orr. |
| Henry O. Pratt | March 4, 1873 – March 3, 1877 |
Republican | 4th | Elected in 1872. Retired. |
| Hiram Price | March 4, 1863 – March 3, 1869 |
Republican | 2nd | Elected in 1862. Retired. |
| March 4, 1877 – March 3, 1881 |
Elected in 1876. Retired. | |||
| Solomon F. Prouty | March 4, 1911 – March 3, 1915 |
Republican | 7th | Elected in 1910. Retired. |
| William H. M. Pusey | March 4, 1883 – March 3, 1885 |
Democratic | 9th | Elected in 1882. Lost re-election to Lyman. |
| C. William Ramseyer | March 4, 1915 – March 3, 1933 |
Republican | 6th | Elected in 1914. Redistricted to the 5th district and lost renomination to Thurston. |
| Joseph R. Reed | March 4, 1889 – March 3, 1891 |
Republican | 9th | Elected in 1888. Lost re-election to Bowman. |
| Thomas J. B. Robinson | March 4, 1923 – March 3, 1933 |
Republican | 3rd | Elected in 1922. Lost re-election to Willford. |
| John N. W. Rumple | March 4, 1901 – January 31, 1903 |
Republican | 2nd | Elected in 1900. Retired and died before next term. |
| Ezekiel S. Sampson | March 4, 1875 – March 3, 1879 |
Republican | 6th | Elected in 1874. Lost re-election to Weaver. |
| William F. Sapp | March 4, 1877 – March 3, 1881 |
Republican | 8th | Elected in 1876. Lost renomination to Hepburn. |
| William J. Scherle | January 3, 1967 – January 3, 1973 |
Republican | 7th | Elected in 1966. Redistricted to the 5th district. |
| January 3, 1973 – January 3, 1975 |
5th | Redistricted from the 7th district and re-elected in 1972. Lost re-election to Harkin. | ||
| John R. Schmidhauser | January 3, 1965 – January 3, 1967 |
Democratic | 1st | Elected in 1964. Lost re-election to Schwengel. |
| Fred Schwengel | January 3, 1955 – January 3, 1965 |
Republican | 1st | Elected in 1954. Lost re-election to Schmidhauser. |
| January 3, 1967 – January 3, 1973 |
Elected in 1966. Lost re-election to Mezvinsky. | |||
| George Cromwell Scott | November 5, 1912 – March 3, 1915 |
Republican | 11th | Elected to finish Hubbard's term. Lost re-election to Steele. |
| March 4, 1917 – March 3, 1919 |
Elected in 1916. Retired. | |||
| John J. Seerley | March 4, 1891 – March 3, 1893 |
Democratic | 1st | Elected in 1890. Lost re-election to Gear. |
| Hiram Y. Smith | December 2, 1884 – March 3, 1885 |
Republican | 7th | Elected to finish Kasson's term. Retired. |
| Neal Smith | January 3, 1959 – January 3, 1973 |
Democratic | 5th | Elected in 1958. Redistricted to the 4th district. |
| January 3, 1973 – January 3, 1995 |
4th | Redistricted from the 5th district and re-elected in 1972. Lost re-election to Ganske. | ||
| Walter I. Smith | December 3, 1900 – March 15, 1911 |
Republican | 9th | Elected to finish McPherson's term. Resigned after being appointed judge of the United States Court of Appeals for the Eighth Circuit. |
| William Smyth | March 4, 1869 – September 30, 1870 |
Republican | 2nd | Elected in 1868. Died. |
| Thomas J. Steele | March 4, 1915 – March 3, 1917 |
Democratic | 11th | Elected in 1914. Lost re-election to Scott. |
| Joseph C. Stone | March 4, 1877 – March 3, 1879 |
Republican | 1st | Elected in 1876. Lost renomination to McCoid. |
| Isaac S. Struble | March 4, 1883 – March 3, 1891 |
Republican | 11th | Elected in 1882. Lost renomination to Perkins. |
| Charles Edward Swanson | March 4, 1929 – March 3, 1933 |
Republican | 9th | Elected in 1928. Redistricted to the 7th district and lost re-election to Wearin. |
| Burton E. Sweet | March 4, 1915 – March 3, 1923 |
Republican | 3rd | Elected in 1914. Retired to run for U.S. senator. |
| Joseph H. Sweney | March 4, 1889 – March 3, 1891 |
Republican | 4th | Elected in 1888. Lost re-election to Butler. |
| Henry O. Talle | January 3, 1939 – January 3, 1943 |
Republican | 4th | Elected in 1938. Redistricted to the 2nd district. |
| January 3, 1943 – January 3, 1959 |
2nd | Redistricted from the 4th district and re-elected in 1942. Lost re-election to L. Wolf. | ||
| Tom Tauke | January 3, 1979 – January 3, 1991 |
Republican | 2nd | Elected in 1978. Retired to run for U.S. senator. |
| Lot Thomas | March 4, 1899 – March 3, 1905 |
Republican | 11th | Elected in 1898. Lost renomination to E. Hubbard. |
| William Thompson | March 4, 1847 – June 29, 1850 |
Democratic | 1st | Elected in 1846. Seat declared vacant due to election challenge. |
| William George Thompson | December 1, 1879 – March 3, 1883 |
Republican | 5th | Elected to finish R. Clark's term. Retired. |
| James Thorington | March 4, 1855 – March 3, 1857 |
Whig | 2nd | Elected in 1854. Lost Republican nomination and retired. |
| Lloyd Thurston | March 4, 1925 – March 3, 1933 |
Republican | 8th | Elected in 1924. Redistricted to the 5th district. |
| March 4, 1933 – January 3, 1939 |
5th | Redistricted from the 8th district and re-elected in 1932. Retired to run for U.S. senator. | ||
| Horace Mann Towner | March 4, 1911 – April 1, 1923 |
Republican | 8th | Elected in 1910. Resigned to become Governor of Puerto Rico. |
| John Q. Tufts | March 4, 1875 – March 3, 1877 |
Republican | 2nd | Elected in 1874. Retired. |
| Thomas Updegraff | March 4, 1879 – March 3, 1883 |
Republican | 3rd | Elected in 1878. Redistricted to the 4th district and lost re-election to Weller. |
| March 4, 1893 – March 3, 1899 |
4th | Elected in 1892. Lost renomination to Haugen. | ||
| Hubert Utterback | January 3, 1935 – January 3, 1937 |
Democratic | 6th | Elected in 1934. Retired to run for U.S. senator. |
| William Vandever | March 4, 1859 – March 3, 1863 |
Republican | 2nd | Elected in 1858. Retired.[c] |
| Earl W. Vincent | June 4, 1928 – March 3, 1929 |
Republican | 9th | Elected to finish Green's term. Lost renomination to Swanson. |
| Henry Vollmer | February 10, 1914 – March 3, 1915 |
Democratic | 2nd | Elected to finish Pepper's term. Retired. |
| Martin Joseph Wade | March 4, 1903 – March 3, 1905 |
Democratic | 2nd | Elected in 1902. Lost re-election to Dawson. |
| Madison M. Walden | March 4, 1871 – March 3, 1873 |
Republican | 4th | Elected in 1870. Lost renomination to Pratt. |
| Otha Wearin | March 4, 1933 – January 3, 1939 |
Democratic | 7th | Elected in 1932. Retired to run for U.S. senator. |
| James B. Weaver | March 4, 1879 – March 3, 1881 |
Greenback | 6th | Elected in 1878. Retired to run for president. |
| March 4, 1885 – March 3, 1889 |
Elected in 1884. Lost re-election to Lacey. | |||
| Luman Hamlin Weller | March 4, 1883 – March 3, 1885 |
Greenback | 4th | Elected in 1882. Lost re-election to Fuller. |
| Frederick E. White | March 4, 1891 – March 3, 1893 |
Democratic | 6th | Elected in 1890. Lost re-election to Lacey. |
| Albert C. Willford | March 4, 1933 – January 3, 1935 |
Democratic | 3rd | Elected in 1932. Lost re-election to Gwynne. |
| James Wilson | March 4, 1873 – March 3, 1877 |
Republican | 5th | Elected in 1872. Retired. |
| March 4, 1883 – March 3, 1885 |
Elected in 1882. Retired but lost contested election to Frederick before end of term.[b] | |||
| James F. Wilson | October 8, 1861 – March 3, 1869 |
Republican | 1st | Elected to finish Curtis's term. Retired. |
| Leonard G. Wolf | January 3, 1959 – January 3, 1961 |
Democratic | 2nd | Elected in 1958. Lost re-election to Bromwell. |
| William P. Wolf | December 6, 1870 – March 3, 1871 |
Republican | 2nd | Elected to finish Smyth's term. Retired. |
| Frank P. Woods | March 4, 1909 – March 3, 1919 |
Republican | 10th | Elected in 1908. Lost renomination to Dickinson. |
| David Young | January 3, 2015 – January 3, 2019 |
Republican | 3rd | Elected in 2014. Lost re-election to Axne. |
- ^ Although his official Congressional biography states he declined to run for a third term, newspaper reports indicate that he was an active but unsuccessful candidate for renomination
- ^ a b The resolution of the contest was delayed until the final hours of the Forty-eighth Congress, so Frederick was not declared winner until March 4, 1885.
- ^ Service effectively ended in 1861 when promoted to Major General, but did not officially resign.
