North Dakota was admitted to the Union on November 2, 1889.
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United States Senate
| Class 1 Senators | Congress | Class 3 Senators |
|---|---|---|
| Lyman R. Casey (R) | 51st (1889–1891) | Gilbert A. Pierce (R) |
| 52nd (1891–1893) | Henry C. Hansbrough (R) | |
| William N. Roach (D) | 53rd (1893–1895) | |
| 54th (1895–1897) | ||
| 55th (1897–1899) | ||
| Porter J. McCumber (R) | 56th (1899–1901) | |
| 57th (1901–1903) | ||
| 58th (1903–1905) | ||
| 59th (1905–1907) | ||
| 60th (1907–1909) | ||
| 61st (1909–1911) | Martin N. Johnson (R) | |
| Fountain L. Thompson (D) | ||
| William E. Purcell (D) | ||
| Asle J. Gronna (R) | ||
| 62nd (1911–1913) | ||
| 63rd (1913–1915) | ||
| 64th (1915–1917) | ||
| 65th (1917–1919) | ||
| 66th (1919–1921) | ||
| 67th (1921–1923) | Edwin F. Ladd (R) | |
| Lynn J. Frazier (R-NPL) | 68th (1923–1925) | |
| 69th (1925–1927) | ||
| Gerald P. Nye (R) | ||
| 70th (1927–1929) | ||
| 71st (1929–1931) | ||
| 72nd (1931–1933) | ||
| 73rd (1933–1935) | ||
| 74th (1935–1937) | ||
| 75th (1937–1939) | ||
| 76th (1939–1941) | ||
| William Langer (R-NPL) | 77th (1941–1943) | |
| 78th (1943–1945) | ||
| 79th (1945–1947) | John Moses (D) | |
| Milton R. Young (R) | ||
| 80th (1947–1949) | ||
| 81st (1949–1951) | ||
| 82nd (1951–1953) | ||
| 83rd (1953–1955) | ||
| 84th (1955–1957) | ||
| 85th (1957–1959) | ||
| 86th (1959–1961) | ||
| Clarence Norman Brunsdale (R) | ||
| Quentin N. Burdick (D-NPL) | ||
| 87th (1961–1963) | ||
| 88th (1963–1965) | ||
| 89th (1965–1967) | ||
| 90th (1967–1969) | ||
| 91st (1969–1971) | ||
| 92nd (1971–1973) | ||
| 93rd (1973–1975) | ||
| 94th (1975–1977) | ||
| 95th (1977–1979) | ||
| 96th (1979–1981) | ||
| 97th (1981–1983) | Mark Andrews (R) | |
| 98th (1983–1985) | ||
| 99th (1985–1987) | ||
| 100th (1987–1989) | Kent Conrad (D-NPL) | |
| 101st (1989–1991) | ||
| 102nd (1991–1993) | ||
| Jocelyn Burdick (D-NPL) | ||
| Kent Conrad (D-NPL) | Byron Dorgan (D-NPL) | |
| 103rd (1993–1995) | ||
| 104th (1995–1997) | ||
| 105th (1997–1999) | ||
| 106th (1999–2001) | ||
| 107th (2001–2003) | ||
| 108th (2003–2005) | ||
| 109th (2005–2007) | ||
| 110th (2007–2009) | ||
| 111th (2009–2011) | ||
| 112th (2011–2013) | John Hoeven (R) | |
| Heidi Heitkamp (D-NPL) | 113th (2013–2015) | |
| 114th (2015–2017) | ||
| 115th (2017–2019) | ||
| Kevin Cramer (R) | 116th (2019–2021) | |
| 117th (2021–2023) |
United States House of Representatives
| Congress | 1st at-large seat | 2nd at-large seat | |
|---|---|---|---|
| 51st (1889–1891) | Henry C. Hansbrough (R) | ||
| 52nd (1891–1893) | Martin N. Johnson (R) | ||
| 53rd (1893–1895) | |||
| 54th (1895–1897) | |||
| 55th (1897–1899) | |||
| 56th (1899–1901) | Burleigh F. Spalding (R) | ||
| 57th (1901–1903) | Thomas Frank Marshall (R) | ||
| 58th (1903–1905) | Burleigh F. Spalding (R) | ||
| 59th (1905–1907) | Asle Gronna (R) | ||
| 60th (1907–1909) | |||
| 61st (1909–1911) | Louis B. Hanna (R) | ||
| 62nd (1911–1913) | Henry Thomas Helgesen (R) | ||
| 1st district | 2nd district | 3rd district | |
| 63rd (1913–1915) | Henry Thomas Helgesen (R) | George M. Young (R) | Patrick Daniel Norton (R) |
| 64th (1915–1917) | |||
| 65th (1917–1919) | |||
| John Miller Baer (R) | |||
| 66th (1919–1921) | James H. Sinclair (R) | ||
| 67th (1921–1923) | Olger B. Burtness (R) | ||
| 68th (1923–1925) | |||
| Thomas Hall (R) | |||
| 69th (1925–1927) | |||
| 70th (1927–1929) | |||
| 71st (1929–1931) | |||
| 72nd (1931–1933) | |||
| 1st at-large seat | 2nd at-large seat | ||
| 73rd (1933–1935) | James H. Sinclair (R) | William Lemke (R-NPL) | |
| 74th (1935–1937) | Usher L. Burdick (R-NPL) | ||
| 75th (1937–1939) | |||
| 76th (1939–1941) | |||
| 77th (1941–1943) | Charles R. Robertson (R) | ||
| 78th (1943–1945) | William Lemke (R-NPL) | ||
| 79th (1945–1947) | Charles R. Robertson (R) | ||
| 80th (1947–1949) | |||
| 81st (1949–1951) | Usher L. Burdick (R-NPL) | ||
| 82nd (1951–1953) | Fred G. Aandahl (R) | ||
| 83rd (1953–1955) | Otto Krueger (R) | ||
| 84th (1955–1957) | |||
| 85th (1957–1959) | |||
| 86th (1959–1961) | Quentin N. Burdick (D-NPL) | Don L. Short (R) | |
| 87th (1961–1963) | Hjalmar Carl Nygaard (R) | ||
| 1st district | 2nd district | ||
| 88th (1963–1965) | Hjalmar Carl Nygaard (R) | Don L. Short (R) | |
| Mark Andrews (R) | |||
| 89th (1965–1967) | Rolland W. Redlin (D-NPL) | ||
| 90th (1967–1969) | Thomas S. Kleppe (R) | ||
| 91st (1969–1971) | |||
| 92nd (1971–1973) | Arthur A. Link (D-NPL) | ||
| At-large seat | |||
| 93rd (1973–1975) | Mark Andrews (R) | ||
| 94th (1975–1977) | |||
| 95th (1977–1979) | |||
| 96th (1979–1981) | |||
| 97th (1981–1983) | Byron Dorgan (D-NPL) | ||
| 98th (1983–1985) | |||
| 99th (1985–1987) | |||
| 100th (1987–1989) | |||
| 101st (1989–1991) | |||
| 102nd (1991–1993) | |||
| 103rd (1993–1995) | Earl Pomeroy (D-NPL) | ||
| 104th (1995–1997) | |||
| 105th (1997–1999) | |||
| 106th (1999–2001) | |||
| 107th (2001–2003) | |||
| 108th (2003–2005) | |||
| 109th (2005–2007) | |||
| 110th (2007–2009) | |||
| 111th (2009–2011) | |||
| 112th (2011-2013) | Rick Berg (R) | ||
| 113th (2013–2015) | Kevin Cramer (R) | ||
| 114th (2015–2017) | |||
| 115th (2017–2019) | |||
| 116th (2019–2021) | Kelly Armstrong (R) | ||
| 117th (2021–2023) | |||
| Congress | At-large seat |
Key
| Key to party colors and abbreviations for members of the U.S. Congress and other politicians or officials | ||||||||||||||||||||||||||||||||||
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