# List of the youngest state legislators in the United States

This is a list of the youngest individuals (i.e. less than 25 years old) elected or appointed to a state legislature in the United States.

## Overview

In 2014, the National Conference of State Legislatures estimated that 5% of state legislators were under the age of 30.

## List

| Name | State | Political party | Date of birth | Age upon taking office | Tenure | Notes |
| Lilian Hale | Washington | Republican | Mar 7, 2006 | 18 years, 0 days | Mar 7, 2024 – Mar 8, 2024 | Temporarily succeeding her stepfather Joel McEntire. |
| Saira Blair | West Virginia | Republican | Jul 11, 1996 | 18 years, 143 days | Dec 1, 2014 – Dec 1, 2018 | Daughter of Craig Blair. |
| Valerie McDonnell | New Hampshire | Republican | May 25, 2004 | 18 years, 196 days | Dec 7, 2022 – present | Youngest-ever New Hampshire legislator. |
| Derrick Seaver | Ohio | Democratic | Feb 6, 1982 | 18 years, 332 days | Jan 3, 2001 – Dec 31, 2006 | Switched to the Republican Party in November 2004. |
| Derrick Seaver | Ohio | Republican | Feb 6, 1982 | 18 years, 332 days | Jan 3, 2001 – Dec 31, 2006 | Switched to the Republican Party in November 2004. |
| Jacob Bachmeier | Montana | Democratic | Jan 29, 1998 | 18 years, 339 days | Jan 2, 2017 – Jan 4, 2021 | |
| James Thibualt | New Hampshire | Republican | December 27, 2005 | 18 years, 343 days | Dec 4, 2024 – present | Youngest state legislator in the United States. |
| Dawson Holle | North Dakota | Republican | Nov 25, 2003 | 19 years, 6 days | Dec 1, 2022 – present | |
| Tony Labranche | New Hampshire | Democratic | Nov 11, 2001 | 19 years, 22 days | Dec 3, 2020 – Aug 8, 2022 | Left the Democratic Party in January 2022. |
| Tony Labranche | New Hampshire | Independent | Nov 11, 2001 | 19 years, 22 days | Dec 3, 2020 – Aug 8, 2022 | Left the Democratic Party in January 2022. |
| Joe Sweeney | New Hampshire | Republican | Nov 8, 1993 | 19 years, 27 days | Dec 5, 2012 – present | |
| Josh Holstein | West Virginia | Republican | Nov 2, 2001 | 19 years, 29 days | Dec 1, 2020 – present | |
| Caleb Hanna | West Virginia | Republican | Oct 29, 1999 | 19 years, 33 days | Dec 1, 2018 – Jan 2, 2024 | Youngest-ever African-American state legislator. |
| Rio Tilton | New Hampshire | Republican | Jun 15, 1996 | 19 years, 51 days | Aug 5, 2015 – Dec 5, 2018 | |
| Mallerie Stromswold | Montana | Republican | Oct 29, 2001 | 19 years, 67 days | Jan 4, 2021 – Jan 17, 2023 | |
| Maureen Manning | New Hampshire | Democratic | Sep 12, 1961 | 19 years, 82 days | Dec 3, 1980 – Dec 3, 1986 | |
| Brian Poznanski | New Hampshire | Democratic | Jul 31, 1989 | 19 years, 125 days | Dec 3, 2008 – Dec 1, 2010 | |
| Kevin H. Smith | New Hampshire | Republican | Jul 28, 1977 | 19 years, 129 days | Dec 4, 1996 – Dec 2, 1998 | Later candidate for governor (2012), town manager of Londonderry (2013–2022) and candidate for U.S. senator (2022). |
| Jack Uhde | Montana | Democratic | Aug 27, 1957 | 19 years, 129 days | Jan 3, 1977 – Jan 5, 1981 | At the time the youngest-ever Montana state representative. |
| Yvonne Dean-Bailey | New Hampshire | Republican | Dec 1, 1995 | 19 years, 169 days | May 19, 2015 – Apr 19, 2018 | |
| Stephen Duprey | New Hampshire | Republican | Jun 1, 1953 | 19 years, 188 days | Dec 6, 1972 – Dec 1, 1976 | Later chair of the state Republican Party (1997–2001). |
| Michael Elconin | Wisconsin | Democratic | Jun 20, 1953 | 19 years, 195 days | Jan 1, 1973 – Jan 3, 1977 | |
| Dennis Ruprecht | New Hampshire | Democratic | May 15, 1999 | 19 years, 204 days | Dec 5, 2018 – Dec 17, 2021 | |
| Kalan Haywood | Wisconsin | Democratic | Jun 5, 1999 | 19 years, 216 days | Jan 7, 2019 – present | |
| Cassandra Levesque | New Hampshire | Democratic | May 3, 1999 | 19 years, 216 days | Dec 5, 2018 – present | |
| Alison Conn | Montana | Republican | May 21, 1961 | 19 years, 229 days | Jan 5, 1981 – Jan 3, 1983 | At the time the youngest-ever Republican legislator. |
| Scott Merrick | New Hampshire | Democratic | Mar 29, 1985 | 19 years, 247 days | Dec 1, 2004 – Oct 2009 | |
| Michael Weeden | New Hampshire | Republican | Mar 11, 1991 | 19 years, 265 days | Dec 1, 2010 – Dec 5, 2012 | |
| Thomas R. Lussier | Massachusetts | Democratic | Apr 5, 1957 | 19 years, 275 days | Jan 5, 1977 – Jan 1, 1985 | Youngest-ever Massachusetts legislator. |
| Jonah Wheeler | New Hampshire | Democratic | Mar 1, 2003 | 19 years, 281 days | Dec 7, 2022 – present | |
| Jeffrey Fontas | New Hampshire | Democratic | Jan 14, 1987 | 19 years, 326 days | Dec 6, 2006 – Dec 3, 2008 | |
| Dave Pine | New Hampshire | Democratic | Dec 22, 1958 | 19 years, 349 days | Dec 6, 1978 – Dec 3, 1980 | |
| Andrew Edwards | New Hampshire | Democratic | 1987 | 19 years | Dec 6, 2006 – Dec 3, 2008 | |
| Kyle Jones | New Hampshire | Republican | 1991 | 19 years | Dec 1, 2010 – Dec 5, 2012 | Son of Laura Jones. |
| Gregory Reed | Vermont | Republican | 1953 | 19 years | Jan 3, 1973 – [?] | |
| Jay Lucas | New Hampshire | Republican | Oct 18, 1954 | 20 years, 47 days | Dec 4, 1974 – Dec 6, 1978 | Later nominee for governor (1998). |
| Nicholas Kettle | Rhode Island | Republican | Oct 18, 1990 | 20 years, 79 days | Jan 5, 2011 – Feb 22, 2018 | Youngest-ever Rhode Island state senator. |
| Jesse Laslovich | Montana | Democratic | Oct 3, 1980 | 20 years, 92 days | Jan 3, 2001 – Jan 3, 2005 | Later state senator (2005–2010). |
| Homer Paul | Oklahoma | Democratic | Aug 4, 1904 | 20 years, 107 days | Nov 17, 1926 – Nov 19, 1930 | Later state senator (1932–1948) and state senate president pro tempore (1945–1947). |
| Aaron Coleman | Kansas | Democratic | Sep 20, 2000 | 20 years, 113 days | Jan 11, 2021 – Jan 9, 2023 | Left the Democratic Party from January to February 2021. Suspended from the party in February 2022. |
| Aaron Coleman | Kansas | Independent | Sep 20, 2000 | 20 years, 113 days | Jan 11, 2021 – Jan 9, 2023 | Left the Democratic Party from January to February 2021. Suspended from the party in February 2022. |
| Joshua Higginbotham | West Virginia | Republican | Jul 23, 1996 | 20 years, 131 days | Dec 1, 2016 – Nov 5, 2021 | |
| James Davis | Iowa | Whig | Jul 20, 1826 | 20 years, 133 days | Nov 30, 1846 – Dec 3, 1848 | |
| John Breckinridge | Virginia | Independent | Dec 2, 1760 | 20 years, 177 days | May 28, 1781 – May 1782, May 5, 1783 – Oct 17, 1785 | Later U.S. representative-elect (1792, did not serve), attorney general of Kentucky (1793–1797), Kentucky state representative (1798–1800), speaker of the Kentucky House (1799–1800), U.S. senator (1801–1805) and U.S. attorney general (1805–1806). Joined the Democratic-Republican Party. |
| Aundre Bumgardner | Connecticut | Republican | Jul 5, 1994 | 20 years, 186 days | Jan 7, 2015 – Jan 4, 2017 Jan 4, 2023 – present | Switched to the Democratic Party in 2018. |
| Aundre Bumgardner | Connecticut | Democratic | Jul 5, 1994 | 20 years, 186 days | Jan 7, 2015 – Jan 4, 2017 Jan 4, 2023 – present | Switched to the Democratic Party in 2018. |
| Elias Coop-Gonzalez | West Virginia | Republican | May 2, 2002 | 20 years, 213 days | Dec 1, 2022 – present | |
| Joseph Stallcop | New Hampshire | Democratic | May 7, 1996 | 20 years, 214 days | Dec 7, 2016 – Aug 6, 2018 | Switched to the Libertarian Party in May 2017. |
| Joseph Stallcop | New Hampshire | Libertarian | May 7, 1996 | 20 years, 214 days | Dec 7, 2016 – Aug 6, 2018 | Switched to the Libertarian Party in May 2017. |
| Caleb Q. Dyer | New Hampshire | Republican | May 5, 1996 | 20 years, 216 days | Dec 7, 2016 – Dec 4, 2018 | Switched to the Libertarian Party in February 2017. |
| Caleb Q. Dyer | New Hampshire | Libertarian | May 5, 1996 | 20 years, 216 days | Dec 7, 2016 – Dec 4, 2018 | Switched to the Libertarian Party in February 2017. |
| Braxton Mitchell | Montana | Republican | May 20, 2000 | 20 years, 229 days | Jan 4, 2021 – present | |
| David Stone | North Carolina | Independent | Feb 17, 1770 | 20 years, 257 days | Nov 1, 1790 – Feb 7, 1795, Nov 18, 1811 – Dec 25, 1812 | Later U.S. representative (1799–1801), U.S. senator (1801–1807, 1813–1814) and governor (1808–1810). |
| David Stone | North Carolina | Democratic-Republican | Feb 17, 1770 | 20 years, 257 days | Nov 1, 1790 – Feb 7, 1795, Nov 18, 1811 – Dec 25, 1812 | Later U.S. representative (1799–1801), U.S. senator (1801–1807, 1813–1814) and governor (1808–1810). |
| William R. King | North Carolina | Democratic-Republican | Apr 7, 1786 | 20 years, 269 days | Jan 1, 1807 – Jan 1, 1809 | Vice president of the United States (1853) |
| D.J. Bettencourt | New Hampshire | Republican | Jan 6, 1984 | 20 years, 330 days | Dec 1, 2004 – May 27, 2012 | Later House majority leader (2010–2012). Youngest majority leader in New Hampshire history. |
| Michael J. Obuchowski | Vermont | Democratic | Feb 4, 1952 | 20 years, 334 days | Jan 3, 1973 – Jan 2011 | Later speaker of the state House (1995–2001). |
| Harold W. Giard | Vermont | Democratic | Feb 1, 1952 | 20 years, 337 days | Jan 3, 1973 – Jan 7, 1981 | Later state senator (2005–2013). |
| Kevin Soucie | Wisconsin | Democratic | Feb 2, 1954 | 20 years, 338 days | Jan 6, 1975 – Jan 3, 1981 | |
| Shaun Doherty | New Hampshire | Republican | Dec 19, 1987 | 20 years, 350 days | Dec 3, 2008 – Dec 5, 2012 | |
| Karen Swanson | Massachusetts | Democratic | Jan 15, 1954 | 20 years, 351 days | Jan 1, 1975 – July 12, 1978 | |
| Joseph Lane | Indiana | Democratic | Dec 14, 1801 | 20 years, 353 days | Dec 2, 1822 – 1823, 1830 – 1833, 1838 – 1839 | Later state senator (1839–1840, 1844–1846), governor of Oregon Territory (1849–1850, 1853), delegate to the U.S. House of Representatives (1851–1859), shadow U.S. senator (1858–1859), U.S. senator (1859–1861) and southern Democratic nominee for vice president of the United States (1860). |
| Fred Kessler | Wisconsin | Democratic | Jan 11, 1940 | 20 years, 357 days | Jan 3, 1961 – Jan 7, 1963, Jan 4, 1965 – Jul 5, 1972, Jan 3, 2005 – Jan 3, 2019 | At the time the youngest-ever Wisconsin state legislator. |
| Jim Normand | New Hampshire | Democratic | Dec 12, 1953 | 20 years, 357 days | Dec 4, 1974 – Dec 6, 1978 | Later state executive councilor (1997–1999). |
| Homer Hendricks | Texas | Democratic | Jan 19, 1900 | 20 years, 358 days | Jan 11, 1921 – Jan 13, 1925 | Youngest-ever Texas state representative. |
| Thomas Dixon Jr. | North Carolina | Democratic | Jan 11, 1864 | 20 years, 362 days | Jan 7, 1885 – Jan 5, 1887 | |
| Garrett Muscatel | New Hampshire | Democratic | Dec 7, 1997 | 20 years, 363 days | Dec 5, 2018 – Jun 8, 2020 | |
| Jesse N. Smith | Utah | Independent | Dec 2, 1834 | 20–21 years | 1855 – 1856, Jan 8, 1872 – Jan 12, 1874, Jan 10, 1876 – Jan 14, 1878, Jan 12, 1880 – Jan 9, 1882 | Later Arizona legislator (1897–1899). |
| Seaborn Roddenbery | Georgia | Democratic | Jan 12, 1870 | 21 years, 0 days | Jan 12, 1891 – 1895 | Later mayor of Thomasville (1903–1904) and U.S. representative (1910–1913). |
| Sherry Shealy Martschink | South Carolina | Republican | Oct 26, 1949 | 21 years, 14 days | Nov 9, 1970 – 1974 | Daughter of Ryan Shealy. Later state senator (1987–1990) and candidate for lieutenant governor (1990). |
| Tad Jude | Minnesota | Democratic | Dec 13, 1951 | 21 years, 20 days | Jan 2, 1973 – Jan 4, 1983 | Youngest-ever Minnesota state legislator. Son of Victor N. Jude. Later state senator (1983–1989) and candidate for state attorney general (2022). Switched to the Republican Party in 1992. |
| Clyde R. Hoey | North Carolina | Democratic | Dec 11, 1877 | 21 years, 24 days | Jan 4, 1899 – Jan 7, 1903 | Later state senator (1903–1905), U.S. representative (1919–1921), governor (1937–1941) and U.S. senator (1945–1954). |
| Claire Cory | North Dakota | Republican | Sep 11, 1998 | 21 years, 30 days | Oct 11, 2019 – present | |
| Amber Mariano | Florida | Republican | Nov 1, 1995 | 21 years, 32 days | Dec 3, 2016 – Nov 8, 2022 | |
| Alex Looysen | North Dakota | Republican | Sep 21, 1991 | 21 years, 71 days | Dec 1, 2012 – Dec 1, 2016 | |
| John G. Jackson | Virginia | Democratic-Republican | Sep 22, 1777 | 21 years, 72 days | Dec 3, 1798 – Dec 7, 1801, Dec 2, 1811 – Nov 30, 1812 | Son of George Jackson. Later U.S. representative (1803–1810, 1813–1817). |
| Michael E. Cassidy | Pennsylvania | Democratic | Sep 15, 1955 | 21 years, 77 days | Dec 1, 1976 – Dec 1, 1978 | |
| Jack W. Connell Jr. | Texas | Democratic | Oct 21, 1937 | 21 years, 84 days | Jan 13, 1959 – Jan 8, 1963 | |
| Mark Connolly | New Hampshire | Republican | Sep 2, 1955 | 21 years, 90 days | Dec 1, 1976 – Dec 6, 1978 | Later candidate for state treasurer (1990) and for governor (2016). Switched to the Democratic Party. |
| Joseph Montoya | New Mexico | Democratic | Sep 24, 1915 | 21 years, 99 days | Jan 1, 1937 – Jan 1, 1941 | Youngest-ever New Mexico state representative and subsequently the youngest-ever New Mexico state senator. Later state senator (1941–1947), lieutenant governor (1947–1951, 1955–1957), U.S. representative (1957–1964) and U.S. senator (1964–1977). |
| Cordell Hull | Tennessee | Democratic | Oct 2, 1871 | 21 years, 100 days | Jan 10, 1893 – Jan 12, 1897 | Later U.S. representative (1907–1921, 1923–1931), chair of the DNC (1921–1924), U.S. senator (1931–1933) and U.S. secretary of state (1933–1944). |
| Mike Unhjem | North Dakota | Republican | Aug 22, 1953 | 21 years, 101 days | Dec 1, 1974 – Dec 1, 1986 | |
| David Clarenbach | Wisconsin | Democratic | Sep 26, 1953 | 21 years, 102 days | Jan 6, 1975 – Jan 4, 1993 | Grandson of Alexander Frederick. Later speaker pro tempore (1983–1993). |
| Neil Craig Corson | Maine | Republican | Aug 24, 1947 | 21 years, 102 days | Dec 4, 1968 – Dec 2, 1970 | |
| Edward Lloyd | Maryland | Democratic-Republican | Jul 22, 1779 | 21 years, 104 days | Nov 3, 1800 – Nov 3, 1806 | Later U.S. representative (1806–1809), governor (1809–1811), U.S. senator (1819–1826), state senator (1826–1831) and president of the state senate (1826–1827). |
| Drew Dennert | South Dakota | Republican | Aug 28, 1995 | 21 years, 128 days | Jan 3, 2017 – present | |
| Matthew Heilman | North Dakota | Republican | Jul 19, 2001 | 21 years, 135 days | Dec 1, 2022 – present | |
| Scott Newhard | Iowa | Democratic | Aug 23, 1951 | 21 years, 138 days | Jan 8, 1973 – Jan 7, 1979 | Youngest-ever Iowa state legislator. |
| Wayne Olhoft | Minnesota | Democratic | Aug 1, 1951 | 21 years, 154 days | Jan 2, 1973 – Jan 3, 1983 | |
| Steven Howard | Vermont | Democratic | Aug 3, 1971 | 21 years, 156 days | Jan 6, 1993 – Jan 1999, Jan 2005 – Jan 2011 | |
| Joseph Walkovich | Connecticut | Democratic | Aug 1, 1953 | 21 years, 160 days | Jan 8, 1975 – Jan 9, 1985 | |
| Jamie Whitten | Mississippi | Democratic | Apr 18, 1910 | 21 years, 162 days | Sep 27, 1931 – Jan 5, 1932 | Later U.S. representative (1941–1995) and dean of the U.S. House (1979–1995). |
| John William Connelly | Texas | Democratic | Aug 2, 1919 | 21 years, 165 days | Jan 14, 1941 – Jan 9, 1945 | |
| Patrick J. Kennedy | Rhode Island | Democratic | Jul 14, 1967 | 21 years, 171 days | Jan 1, 1989 – Jan 3, 1993 | Son of Ted Kennedy and nephew of president John F. Kennedy. Later U.S. representative (1995–2011). |
| R. Carlisle Burdick | Minnesota | [?] | Jul 14, 1834 | 21 years, 172 days | Jan 2, 1856 – Jan 6, 1857 | |
| Benjamin Bubar Jr. | Maine | Republican | Jun 17, 1917 | 21 years, 173 days | Dec 7, 1938 – Dec 6, 1944 | Son of state representative Benjamin Bubar Sr. Later Prohibition Party nominee for president of the United States (1976, 1980). |
| Brandon Prichard | North Dakota | Republican | May 29, 2001 | 21 years, 186 days | Dec 1, 2022 – present | |
| Henry Tazewell | Virginia | Independent | Nov 27, 1753 | 21 years, 186 days | Jun 1, 1775 – Mar 31, 1785 | Later U.S. senator (1794–1799) and president pro tempore of the U.S. Senate (1795). Joined the Anti-Administration and Democratic-Republican parties. |
| John E. Rohan | Wisconsin | Democratic | Jul 5, 1907 | 21 years, 188 days | Jan 9, 1929 – Jan 7, 1931 | |
| Jim Douglas | Vermont | Republican | Jun 21, 1951 | 21 years, 196 days | Jan 3, 1973 – Jan 3, 1979 | Later state secretary of state (1981–1993), nominee for U.S. senator (1992), state treasurer (1995–2003) and governor (2003–2011). |
| Nathan Carlow | Maine | Republican | May 18, 1999 | 21 years, 198 days | Dec 2, 2020 – present | |
| Barry Hobbins | Maine | Democratic | May 17, 1951 | 21 years, 203 days | Dec 6, 1972 – Dec 5, 1984, Dec 5, 2012 – Dec 3, 2016 | Later state senator (1988–1990, 2004–2012) and state public advocate (2017–2021). |
| Rudy García | Florida | Republican | Apr 15, 1963 | 21 years, 205 days | Nov 6, 1984 – Nov 8, 1988 Nov 7, 1989 – Nov 7, 2000 | Later state senator (2000–2010) and candidate for mayor of Hialeah (2011). |
| Jerry J. O'Connell | Montana | Democratic | Jun 14, 1909 | 21 years, 205 days | Jan 5, 1931 – 1934 | Later U.S. representative (1937–1939). |
| Tulsi Gabbard | Hawaii | Democratic | Apr 12, 1981 | 21 years, 207 days | Nov 5, 2002 – Nov 2, 2004 | Daughter of Mike Gabbard. Later U.S. representative (2013–2021) and candidate for president of the United States (2020). Left the Democratic Party in October 2022. |
| Sarah Laszloffy | Montana | Republican | Jun 13, 1991 | 21 years, 208 days | Jan 7, 2013 – Jan 2, 2017 | |
| John Bell | Tennessee | Democratic-Republican | Feb 18, 1796 | 21 years, 209 days | Sep 15, 1817 – Nov 25, 1817 | Later U.S. representative (1827–1841), speaker of the U.S. House (1834–1835), secretary of war (1841), state representative (1847), U.S. senator (1847–1859) and Constitutional Union nominee for president of the United States (1860). |
| DeWitt Hale | Texas | Democratic | Jun 10, 1917 | 21 years, 214 days | Jan 10, 1939 – Dec 14, 1940, Jan 13, 1953 – Sep 30, 1978 | |
| Will L. King | Iowa | Republican | Jun 9, 1897 | 21 years, 218 days | Jan 13, 1919 – Jan 9, 1921 | |
| Thomas J. Creamer | New York | Democratic | May 26, 1843 | 21 years, 220 days | Jan 1, 1865 – Dec 31, 1867, Jan 1, 1889 – Dec 31, 1889 | Later state senator (1868–1871) and U.S. representative (1873–1875, 1901–1903). |
| Robert F. Larkin Jr. | Massachusetts | Democratic | May 29, 1955 | 21 years, 221 days | Jan 5, 1977 – Jan 7, 1981 | |
| Justin Chenette | Maine | Democratic | Apr 23, 1991 | 21 years, 226 days | Dec 5, 2012 – Dec 7, 2016 | Later state senator (2016–2020). |
| Drew Christensen | Minnesota | Republican | May 21, 1993 | 21 years, 230 days | Jan 6, 2015 – Jan 7, 2019 | |
| Roger B. Taney | Maryland | Federalist | Mar 17, 1777 | 21 years, 233 days | Nov 5, 1798 – Jan 3, 1800 | Later state attorney general (1827–1831), U.S. attorney general (1831–1833), secretary of the treasury (1833–1834) and chief justice (1836–1864). |
| Elise Hall | Oklahoma | Republican | Mar 26, 1989 | 21 years, 236 days | Nov 17, 2010 – Nov 21, 2018 | |
| Patrick B. Augustine | Kansas | Democratic | May 14, 1955 | 21 years, 241 days | Jan 10, 1977 – Jan 12, 1981 | |
| Stephen Smith | Arkansas | Democratic | May 15, 1949 | 21 years, 241 days | Jan 11, 1971 – Jan 13, 1975 | |
| John Tyler | Virginia | Democratic-Republican | Mar 29, 1790 | 21 years, 248 days | Dec 2, 1811 – Nov 11, 1816, 1839 | Son of John Tyler Sr. Later U.S. representative (1816–1821), governor (1825–1827), U.S. senator (1827–1836), senate president pro tempore (1835), vice president (1841), president (1841–1845, at the time the youngest-ever U.S. president), member of the Provisional Confederate Congress (1861–1862) and representative-elect of the Confederate States Congress (1861–1862, died). Switched to the Democratic, Whig and Tyler Democratic parties. |
| Alec Ryncavage | Pennsylvania | Republican | Mar 27, 2001 | 21 years, 249 days | Dec 1, 2022 – present | |
| Joe Mitchell | Iowa | Republican | Apr 23, 1997 | 21 years, 253 days | Jan 1, 2019 – Jan 1, 2023 | |
| Carlton W. Mauthe | Wisconsin | Republican | Apr 18, 1907 | 21 years, 264 days | Jan 7, 1929 – Jan 3, 1933 | |
| Jewell Jones | Michigan | Democratic | Apr 11, 1995 | 21 years, 265 days | Jan 1, 2017 – present | Youngest legislator in Michigan history. |
| J.T. Larson | Wyoming | Republican | Apr 6, 2001 | 21 years, 271 days | Jan 2, 2023 – present | |
| Robert M. Clarke | California | Republican | Mar 5, 1879 | 21 years, 273 days | Dec 3, 1900 – Dec 1, 1902 | |
| James Arthur Field | Vermont | Republican | Apr 10, 1941 | 21 years, 274 days | Jan 9, 1963 – [?] | |
| John S. Addis | Connecticut | Democratic | Apr 4, 1889 | 21 years, 275 days | Jan 4, 1911 – Jan 3, 1917 | Later state treasurer (1935–1937). |
| Edmund Benjamin Grunwald | Wisconsin | Republican | Mar 27, 1899 | 21 years, 282 days | Jan 3, 1921 – Jan 3, 1923 | |
| Josh Cockroft | Oklahoma | Republican | Feb 6, 1989 | 21 years, 283 days | Nov 16, 2010 – Nov 15, 2018 | Later state secretary of state (2023–present). |
| William Henry McMorrow | Massachusetts | Democratic | Mar 23, 1871 | 21 years, 287 days | Jan 4, 1893 – Jan 2, 1895 | Later state senator (1895–1897). |
| James G. Maguire | California | Democratic | Feb 22, 1853 | 21 years, 288 days | Dec 7, 1874 – Dec 4, 1876 | Later U.S. representative (1893–1899) and nominee for governor (1898). |
| Patrick Seymour | Vermont | Republican | Mar 25, 1997 | 21 years, 290 days | Jan 9, 2019 – Feb 24, 2022 | Priorly member of the Democratic Party. |
| Ben Queen | West Virginia | Republican | Feb 7, 1995 | 21 years, 298 days | Dec 1, 2016 – Dec 1, 2022 | Later state senator (2022–present). |
| Lafayette Lane | Oregon | Democratic | Nov 12, 1842 | 21 years, 305 days | Sep 12, 1864 – Oct 22, 1864 | Son of Joseph Lane. Later U.S. representative (1875–1877). |
| Calvin Callahan | Wisconsin | Republican | Mar 2, 1999 | 21 years, 308 days | Jan 4, 2021 – present | |
| Charles A. Barnard | Wisconsin | Republican | Mar 3, 1907 | 21 years, 310 days | Jan 7, 1929 – Jan 5, 1931 | |
| George Plater | Maryland | Proprietary | Nov 8, 1735 | 21 years, 324 days | Sep 28, 1757 – May 24, 1768 | Later state senator (1771–1774, 1777–1791), member of the Annapolis Convention (1775–1776), president of the state senate (1780–1782, 1784, 1785, 1786, 1787–1788, 1790) and governor (1791–1792). Switched to the Federalist Party. |
| Sydney Emanuel Mudd I | Maryland | Republican | Feb 12, 1858 | 21 years, 329 days | Jan 7, 1880 – Jan 2, 1884, Jan 1, 1896 – Jan 5, 1898 | Later U.S. representative (1890–1891, 1897–1911) and speaker of the state House (1896–1897). |
| Kenneth M. O'Brien | Massachusetts | Democratic | Feb 5, 1951 | 21 years, 333 days | Jan 3, 1973 – Jan 1, 1975 | |
| Brodie Deshaies | New Hampshire | Republican | Jan 1, 1999 | 21 years, 336 days | Dec 2, 2020 – Dec 7, 2022 | |
| Reid W. Crawford | Iowa | Republican | Feb 6, 1951 | 21 years, 337 days | Jan 8, 1973 – Aug 8, 1981 | |
| Kevin Furey | Montana | Democratic | Jan 24, 1983 | 21 years, 345 days | Jan 3, 2005 – 2007 | Succeeded in office by his father Tim. |
| Eugene Miller | Texas | Democratic | Jan 25, 1899 | 21 years, 352 days | Jan 11, 1921 – Jan 13, 1925 | Later state senator (1925–1931) and state senate president pro tempore (1929–1931). |
| Jeramey Anderson | Mississippi | Democratic | Dec 6, 1991 | 21 years, 355 days | Nov 26, 2013 – present | |
| George Cushingberry Jr. | Michigan | Democratic | Jan 6, 1953 | 21 years, 360 days | Jan 1, 1975 – Dec 31, 1982, Jan 1, 2005 – Dec 31, 2010 | |
| Charles N. Brush | Connecticut | Democratic | 1905 | 21 years | Jan 5, 1927 – Jan 7, 1931 | |
| Anthony Edgecomb | Maine | Republican | 1993 | 21 years | Dec 3, 2014 – Dec 7, 2016 | Grandson of Peter Edgecomb. |
| Robert W. Ginnett | Washington | Democratic | 1915 | 21 years | Jan 11, 1937 – Jan 9, 1939 | |
| C. Huntington Lathrop | Connecticut | Republican | 1893 | 21 years | Jan 6, 1915 – Jan 3, 1917 | |
| Joshua Whitehouse | New Hampshire | Republican | Apr 1993 | 21 years | Dec 3, 2014 – Dec 7, 2016 | |
| John B. Henderson | Missouri | Democratic | Nov 16, 1826 | 22 years, 4 days | Nov 20, 1848 – 1858 1856–1858 | Since Henderson was only 22 years old, his swearing-in was in violation of the state constitution's age requirement of 24 years. Later U.S. senator (1862–1869). |
| Kayla Kessinger | West Virginia | Republican | Nov 25, 1992 | 22 years, 6 days | Dec 1, 2014 – present | |
| James Henry Brennan | Massachusetts | Democratic | Dec 21, 1888 | 22 years, 14 days | Jan 4, 1911 – Jan 6, 1915, Jan 1, 1919 – Jan 7, 1920 | |
| Doyle Conner | Florida | Democratic | Dec 17, 1928 | 22 years, 16 days | Jan 2, 1951 – Jan 3, 1961 | Later speaker of the state House (1957–1959) and state agriculture commissioner (1961–1991). |
| Simon Sefzik | Washington | Republican | Dec 21, 1999 | 22 years, 21 days | Jan 11, 2022 – Dec 9, 2022 | |
| James W. Grimes | Iowa | Whig | Oct 20, 1816 | 22 years, 23 days | Nov 12, 1838 – Nov 3, 1839, Dec 4, 1843 – May 4, 1845, Nov 6, 1852 – Dec 3, 1854 | Later governor (1854–1858) and U.S. senator (1859–1869). Co-founder of the state Republican Party (1856). |
| Cecil H. Underwood | West Virginia | Republican | Nov 5, 1922 | 22 years, 26 days | Dec 1, 1944 – Dec 1, 1956 | Later governor (1957–1961, 1997–2001). Both the youngest and the oldest person to serve as governor of the state, winning his second term 40 years after winning his first. |
| Gene Stipe | Oklahoma | Democratic | Oct 21, 1926 | 22 years, 28 days | Nov 18, 1948 – Nov 18, 1954 | Later state senator (1957–2003), becoming the longest-serving state senator in Oklahoma history. |
| David Cote | New Hampshire | Democratic | Oct 28, 1960 | 22 years, 34 days | Dec 1, 1982 – Jul 5, 2023 | Later minority leader (2022). |
| Eugene Talbert | Texas | Democratic | Dec 8, 1914 | 22 years, 35 days | Jan 12, 1937 – Jan 14, 1941 | |
| Kenneth Corn | Oklahoma | Democratic | Oct 8, 1976 | 22 years, 41 days | Nov 18, 1998 – Nov 20, 2002 | Later state senator (2002–2010) and nominee for lieutenant governor (2010). |
| Cole L. Blease | South Carolina | Democratic | Oct 8, 1868 | 22 years, 48 days | Nov 25, 1890 – Nov 27, 1894, Jan 10, 1899 – Jan 8, 1901 | Later state senator (1907–1909), state senate president pro tempore (1907–1909), governor (1911–1915) and U.S. senator (1925–1931). |
| Virgil Lilley | Texas | Democratic | Nov 25, 1908 | 22 years, 49 days | Jan 13, 1931 – Jan 10, 1933 | |
| Sherrod Brown | Ohio | Democratic | Nov 9, 1952 | 22 years, 55 days | Jan 3, 1975 – Dec 31, 1982 | Later state secretary of state (1983–1991) and U.S. senator (2007–present). |
| Curtis Hooks Brogden | North Carolina | Democratic | Nov 6, 1816 | 22 years, 56 days | Jan 1, 1839 – Jan 1, 1851, Jan 1, 1887 – Jan 1, 1889 | Later state senator (1853–1857), lieutenant governor (1873–1874), governor (1874–1877) and U.S. representative (1877–1879). Switched to the Republican Party in 1867. |
| Curtis Hooks Brogden | North Carolina | Republican | Nov 6, 1816 | 22 years, 56 days | Jan 1, 1839 – Jan 1, 1851, Jan 1, 1887 – Jan 1, 1889 | Later state senator (1853–1857), lieutenant governor (1873–1874), governor (1874–1877) and U.S. representative (1877–1879). Switched to the Republican Party in 1867. |
| Henry L. Pinckney | South Carolina | Nullifier | Sep 24, 1794 | 22 years, 62 days | Nov 25, 1816 – Nov 24, 1828, Nov 22, 1830 – Mar 4, 1833 | Son of Charles Pinckney. Later mayor of Charleston (1829–1830, 1831–1833, 1837–1840), speaker of the state House (1830–1833) and U.S. representative (1833–1837). |
| Benjamin Troy Woodall | Texas | Democratic | Jul 4, 1904 | 22 years, 71 days | Sep 13, 1926 – Jul 5, 1929 | |
| Ryan Fecteau | Maine | Democratic | Sep 18, 1992 | 22 years, 76 days | Dec 3, 2014 – Dec 7, 2022 | Later speaker of the state House (2020–2022). |
| Odis Allan Weldon | Texas | Democratic | Oct 25, 1914 | 22 years, 79 days | Jan 12, 1937 – Oct 1, 1940 | |
| John Engler | Michigan | Republican | Oct 12, 1948 | 22 years, 81 days | Jan 1, 1971 – Jan 1, 1979 | Later state senator (1979–1991), senate majority leader (1984–1991) and governor (1991–2003). |
| Christina Hagan | Ohio | Republican | Dec 11, 1988 | 22 years, 81 days | Mar 2, 2011 – Dec 31, 2018 | Her father, John Hagan, previously represented the district. |
| Jack Edward Love | Texas | Democratic | Oct 23, 1918 | 22 years, 83 days | Jan 14, 1941 – Jan 14, 1947 | |
| Peppy Blount | Texas | Democratic | Oct 19, 1924 | 22 years, 87 days | Jan 14, 1947 – Sep 26, 1951 | |
| Ratcliffe Hicks | Connecticut | Democratic | Oct 3, 1843 | 22 years, 92 days | Jan 3, 1866 – Jan 9, 1895 | |
| Frederick W. Dallinger | Massachusetts | Republican | Oct 2, 1871 | 22 years, 93 days | Jan 3, 1894 – Jan 1, 1896 | Later state senator (1896–1900) and U.S. representative (1915–1925, 1926–1932). |
| Gabe Leland | Michigan | Democratic | Sep 28, 1982 | 22 years, 95 days | Jan 1, 2005 – Jan 1, 2011 | Son of Burton Leland. |
| Lester Clark | Texas | Democratic | Oct 5, 1916 | 22 years, 97 days | Jan 10, 1939 – Jan 9, 1945 | |
| Adam Putnam | Florida | Republican | Jul 31, 1974 | 22 years, 97 days | Nov 5, 1996 – Nov 7, 2000 | Later U.S. representative (2001–2011), state agriculture commissioner (2011–2019) and candidate for governor (2018). |
| Frank A. Day | Minnesota | Republican | Sep 30, 1855 | 22 years, 100 days | Jan 8, 1878 – Jan 6, 1879 | Later state senator (1887–1895) and lieutenant governor (1895–1897). |
| William K. Hall | Kansas | Republican | Oct 1, 1942 | 22 years, 102 days | Jan 11, 1965 – Jan 9, 1967 | |
| Colleen House | Michigan | Republican | Mar 17, 1952 | 22 years, 106 days | Jul 1, 1974 – Dec 31, 1976, Jan 1, 1983 – Dec 31, 1986 | Later candidate for governor (1986). |
| Brandon Michael Newton | South Carolina | Republican | Jul 29, 1994 | 22 years, 108 days | Nov 14, 2016 – present | |
| Bob Ware | Texas | Republican | Sep 21, 1956 | 22 years, 110 days | Jan 9, 1979 – Jan 11, 1983 | |
| David Morales | Rhode Island | Democratic | Sep 16, 1998 | 22 years, 111 days | Jan 5, 2021 – present | |
| Bakari Sellers | South Carolina | Democratic | Sep 18, 1984 | 22 years, 113 days | Jan 9, 2007 – Jan 6, 2015 | |
| Dick Guidry | Louisiana | Democratic | Sep 22, 1929 | 22 years, 114 days | Jan 14, 1952 – 1956, 1964 – 1976 | |
| William B. Rosenfield | Tennessee | [?] | Jul 15, 1894 | 22 years, 115 days | Nov 7, 1916 – Nov 5, 1918 | |
| Patrick Joseph Kearns | Massachusetts | Democratic | Sep 8, 1912 | 22 years, 116 days | Jan 2, 1935 – Jan 6, 1937 | |
| John R. Lynch | Mississippi | Republican | Sep 10, 1847 | 22 years, 116 days | Jan 4, 1870 – 1873 | Later speaker of the state House (1872–1873) and U.S. representative (1873–1877, 1882–1883). |
| Bob C. Riley | Arkansas | Democratic | Sep 18, 1924 | 22 years, 117 days | Jan 13, 1947 – Jan 8, 1951 | Later lieutenant governor (1971–1975), candidate for governor (1974) and acting governor (1975). |
| Mike Cooney | Montana | Democratic | Sep 3, 1954 | 22 years, 122 days | Jan 3, 1977 – Jan 3, 1981 | Later state secretary of state (1989–2001), candidate for governor (2000), state senator (2003–2011), state senate president (2007–2009), lieutenant governor (2016–2021) and nominee for governor (2020). |
| Thomas Hubbard Allen | Connecticut | Republican | Sep 4, 1862 | 22 years, 125 days | Jan 7, 1885 – Jan 5, 1887, Jan 9, 1889 – Jan 7, 1891, Jan 4, 1893 – Jan 6, 1897 | Later state senator (1887–1889). |
| Arthur Clark | Massachusetts | Democratic | Aug 30, 1877 | 22 years, 126 days | Jan 3, 1900 – Jan 2, 1901 | |
| Stephen Morse Wheeler | New Hampshire | Republican | Aug 30, 1900 | 22 years, 126 days | Jan 3, 1923 – Jan 7, 1925 | Later state attorney general (1942–1944). |
| Henry F. Ashurst | Arizona | Democratic | Aug 30, 1900 | 22 years, 127 days | Jan 18, 1897 – Jan 21, 1901 | Later speaker of the House (1899–1901), territorial senator (1903–1905) and U.S. senator (1912–1941). |
| Stevens Thomson Mason | Virginia | Independent | Dec 29, 1760 | 22 years, 127 days | May 5, 1783 – May 3, 1784, Nov 11, 1794 – Nov 10, 1795 | Son of Thomson Mason. Later state senator (1787–1791) and U.S. senator (1794–1803). |
| John W. Cummings | Massachusetts | Democratic | Aug 25, 1855 | 22 years, 130 days | Jan 2, 1878 – May 17, 1878 | Later state senator (1883) and mayor of Fall River (1885, 1887–1888). |
| Samuel Aubrey Jones | Texas | Democratic | Sep 2, 1914 | 22 years, 132 days | Jan 12, 1937 – Dec 2, 1937 | |
| Jayne Aylward | Kansas | Republican | Aug 28, 1956 | 22 years, 133 days | Jan 8, 1979 – Jan 14, 1991 | |
| Lloyd Lindgren | Washington | Democratic | Sep 3, 1912 | 22 years, 133 days | Jan 14, 1935 – Jan 9, 1939, Jan 8, 1945 – Jan 13, 1947 | |
| Paul Hess | Kansas | Republican | Aug 29, 1948 | 22 years, 135 days | Jan 11, 1971 – Jan 8, 1973 | |
| George W. McCrary | Iowa | Republican | Aug 29, 1835 | 22 years, 135 days | Jan 11, 1858 – Jan 8, 1860, Jan 13, 1862 – Jan 7, 1866 | Later U.S. representative (1869–1877) and U.S. secretary of war (1877–1879). |
| Dennis Dollar | Mississippi | Democratic | Aug 22, 1953 | 22 years, 137 days | Jan 6, 1976 – Jan 3, 1984 | Later candidate for state secretary of state (1983). |
| Joseph T. Robinson | Arkansas | Democratic | Aug 26, 1872 | 22 years, 141 days | Jan 14, 1895 – Jan 11, 1897 | Later governor (1913), U.S. senator (1913–1937), senate minority leader (1923–1933), senate majority leader (1933–1937), candidate for president of the United States (1924) and nominee for vice president (1928). |
| Richard Tisei | Massachusetts | Republican | Aug 13, 1962 | 22 years, 143 days | Jan 3, 1985 – Jan 3, 1991 | Later state senator (1991–2011), state senate minority leader (2007–2011) and nominee for lieutenant governor (2010). |
| Terry Gardiner | Alaska | Democratic | Aug 12, 1950 | 22 years, 149 days | Jan 8, 1973 – Jan 17, 1983 | |
| Herman J. McDevitt | Idaho | Democratic | Jun 29, 1928 | 22 years, 155 days | Dec 1, 1950 – [?] | |
| Michael W. Morrissey | Massachusetts | Democratic | Aug 2, 1954 | 22 years, 156 days | Jan 5, 1977 – Jan 6, 1993 | Later state senator (1993–2011). |
| Kesha Ram Hinsdale | Vermont | Democratic | Aug 2, 1986 | 22 years, 158 days | Jan 7, 2009 – May 11, 2016 | Later state senator (2021–present). |
| Carl Mario D'Aquila | Minnesota | Republican | Aug 1, 1924 | 22 years, 159 days | Jan 7, 1947 – Jan 1, 1951 | At the time the youngest-ever Minnesota state legislator. |
| Ernest F. Davis | Massachusetts | Democratic | Jul 30, 1892 | 22 years, 160 days | Jan 6, 1915 – Jan 5, 1916 | |
| Abel P. Upshur | Virginia | Federalist | Jun 17, 1790 | 22 years, 166 days | Nov 30, 1812 – May 16, 1813, Nov 29, 1824 – 1826 | Son of state senator Littleton Upshur. Later United States Secretary of the Navy (1841–1843) and United States Secretary of State (1843–1844). Switched to the Jacksonian Democrat and Whig parties. |
| George C. Morris | Texas | Democratic | Jul 17, 1912 | 22 years, 175 days | Jan 8, 1935 – Jun 11, 1942 | Later state senator (1942–1951). |
| George H. Beers | Connecticut | Democratic | Jul 15, 1866 | 22 years, 178 days | Jan 9, 1889 – Jan 7, 1891 | |
| Henry Beck | Maine | Democratic | Jun 6, 1986 | 22 years, 180 days | Dec 3, 2008 – Dec 7, 2016 | Later state treasurer (2019–present). |
| Tom Davidson | Maine | Democratic | Jun 8, 1972 | 22 years, 182 days | Dec 7, 1994 – Dec 6, 2000 | |
| Chris Pappas | New Hampshire | Democratic | Jun 4, 1980 | 22 years, 183 days | Dec 4, 2002 – Dec 6, 2006 | Later member of the Executive Council (2013–2019) and U.S. representative (2019–present). |
| Jabez Lamar Monroe Curry | Alabama | Democratic | Jun 5, 1825 | 22 years, 184 days | Dec 6, 1847 – Nov 12, 1849, Nov 14, 1853 – Mar 4, 1857 | Later U.S. representative (1857–1861), Provisional Confederate Congress deputy (1861–1862) and Confederate States representative (1862–1864). |
| Arnold F. Wellman Jr. | Connecticut | Democratic | Jul 3, 1954 | 22 years, 186 days | Jan 5, 1977 – Jan 5, 1983 | |
| Katherine Kazarian | Rhode Island | Democratic | Jun 25, 1990 | 22 years, 190 days | Jan 1, 2013 – present | |
| Corry Thaddeus Sheats | Texas | Democratic | Jul 5, 1902 | 22 years, 192 days | Jan 13, 1925 – Jan 8, 1929 | |
| Will Haskell | Connecticut | Democratic | Jun 28, 1996 | 22 years, 195 days | Jan 9, 2019 – Jan 4, 2023 | |
| Heath Howard | New Hampshire | Democratic | May 26, 2000 | 22 years, 195 days | Dec 7, 2022 – present | |
| Josie Tomkow | Florida | Republican | Oct 15, 1995 | 22 years, 198 days | May 1, 2018 – present | |
| Travis Bennett | New Hampshire | Democratic | May 16, 1992 | 22 years, 201 days | Dec 3, 2014 – Dec 4, 2018 | |
| Jake Blum | North Dakota | Republican | May 11, 1994 | 22 years, 204 days | Dec 1, 2016 – Oct 4, 2019 | |
| Cole Christensen | North Dakota | Republican | May 6, 1998 | 22 years, 209 days | Dec 1, 2020 – Feb 23, 2024 | |
| Clyde H. Smith | Maine | Republican | Jun 9, 1876 | 22 years, 209 days | Jan 4, 1899 – Jan 7, 1903, Jan 1, 1919 – Jan 3, 1923 | Later state senator (1923–1929) and U.S. representative (1937–1940). |
| Walter Kunicki | Wisconsin | Democratic | Jun 9, 1958 | 22 years, 210 days | Jan 5, 1981 – Jan 3, 1999 | Later speaker of the state House (1991–1995) and state House minority leader (1995–1998). |
| David Settle Reid | North Carolina | Democratic | Apr 19, 1813 | 22 years, 211 days | Nov 16, 1835 – Nov 21, 1842 | Nephew of Thomas Settle. Later U.S. representative (1843–1847), governor (1851–1854) and U.S. senator (1854–1859). |
| Timothy F. Maloney | Maryland | Democratic | Jun 12, 1956 | 22 years, 212 days | Jan 10, 1979 – 1994 | |
| Steven Wayne Long | South Carolina | Republican | Apr 14, 1994 | 22 years, 214 days | Nov 14, 2016 – present | |
| Robert B. Anderson | Texas | Democratic | Jun 4, 1910 | 22 years, 220 days | Jan 10, 1933 – Sep 11, 1933 | Later U.S. secretary of the navy (1953–1954), deputy secretary of defense (1954–1955) and secretary of the treasury (1957–1961). Switched to the Republican Party in 1956. |
| Kevin R. Ryan | South Carolina | Republican | Mar 30, 1988 | 22 years, 223 days | Nov 8, 2010 – Nov 12, 2012 | |
| Carter Nordman | Iowa | Republican | May 27, 1998 | 22 years, 229 days | Jan 11, 2021 – present | |
| William A. Steiger | Wisconsin | Republican | May 15, 1938 | 22 years, 233 days | Jan 3, 1961 – 1965 | Priorly chairman of the College Republican National Committee (1959–1961). Later U.S. representative (1967–1978). |
| John Sackett | Alaska | Republican | Jun 3, 1944 | 22 years, 234 days | Jan 23, 1967 – Jan 11, 1971, Jan 8, 1973 – Jan 19, 1987 | |
| Norris Cotton | New Hampshire | Republican | May 11, 1900 | 22 years, 237 days | Jan 3, 1923 – Jan 7, 1925 1943–1947 | Later speaker of the state House (1945–1947), U.S. representative (1947–1954), and U.S. senator (1954–1974, 1975). |
| Dave Woodward | Michigan | Democratic | May 9, 1976 | 22 years, 237 days | Jan 1, 1999 – Jan 1, 2005 | |
| Jonathan Zlotnik | Massachusetts | Democratic | May 7, 1990 | 22 years, 240 days | Jan 2, 2013 – present | |
| Allen F. Behnke | Connecticut | Republican | May 6, 1916 | 22 years, 243 days | Jan 4, 1939 – Jan 6, 1943 | |
| Lucy Boyden | Vermont | Democratic | May 1, 2000 | 22 years, 248 days | Jan 4, 2023 – present | |
| Doug Stang | Minnesota | Republican | May 4, 1974 | 22 years, 248 days | Jan 7, 1997 – Jun 30, 2004 | |
| Julie Slama | Nebraska | Republican | May 2, 1996 | 22 years, 252 days | Jan 9, 2019 – present | Third youngest ever Nebraska legislator, and youngest-ever woman. |
| Peter Forman | Massachusetts | Republican | Apr 28, 1958 | 22 years, 254 days | Jan 7, 1981 – Jan 4, 1995 | Later minority leader (1991–1995) and candidate for secretary of the commonwealth (1994). |
| Randall Evans Jr. | Georgia | Democratic | May 3, 1906 | 22 years, 256 days | Jan 14, 1929 – [?] | Became the youngest-ever Georgia state representative and speaker of the House. |
| Joseph Prentis | Virginia | Independent | Jan 24, 1754 | 22 years, 257 days | Oct 7, 1776 – 1778, May 7, 1781 – Jan 8, 1788 | Later speaker of the state House (1786–1788). |
| Calvin Goings | Washington | Democratic | Apr 3, 1973 | 22 years, 261 days | Dec 20, 1995 – Jan 8, 2001 | At the time the youngest-ever Washington state senator. |
| Tom Scott | Connecticut | Republican | Apr 21, 1958 | 22 years, 261 days | Jan 7, 1981 – Jan 9, 1991 | Later independent candidate for governor (1994). |
| Earl Ray Tomblin | West Virginia | Democratic | Mar 15, 1952 | 22 years, 261 days | Dec 1, 1974 – Dec 1, 1980 | Later state senator (1980–2011), president of the state senate (1995–2011) and governor (2011–2017). |
| Chester G. Atkins | Massachusetts | Democratic | Apr 14, 1948 | 22 years, 267 days | Jan 6, 1971 – Jan 3, 1973 | Later state senator (1973–1985) and U.S. representative (1985–1993). |
| Ben Barnes | Texas | Democratic | Apr 17, 1938 | 22 years, 268 days | Jan 10, 1961 – Jan 14, 1969 | Later speaker of the state House (1965–1969), lieutenant governor (1969–1973) and candidate for governor (1972). |
| Joseph Norvell | Kansas | Democratic | Apr 14, 1950 | 22 years, 269 days | Jan 8, 1973 – Jan 10, 1977 | Later state senator (1977–1989). |
| Joseph Pulitzer | Missouri | Republican | Apr 10, 1847 | 22 years, 270 days | Jan 5, 1870 – Mar 24, 1870 | Since Pulitzer was only 22 years old, his swearing-in was in violation of the state constitution's age requirement of 24 years. Later U.S. representative (1885–1886). Co-founder of the Liberal Republican Party (1870); switched to the Democratic Party in 1874. |
| William Jennings Bryan Dorn | South Carolina | Democratic | Apr 14, 1916 | 22 years, 271 days | Jan 10, 1939 – Jun 8, 1940 | Later state senator (1941–1942), U.S. representative (1947–1949, 1951–1974) and nominee for governor (1974). |
| Roy Hofheinz | Texas | Democratic | Apr 10, 1912 | 22 years, 273 days | Jan 8, 1935 – Jan 12, 1937 | Later mayor of Houston (1953–1955). |
| Philip Davis Bryant | Mississippi | Democratic | Apr 5, 1937 | 22 years, 275 days | Jan 5, 1960 – Jan 2, 1968 | |
| Matt Kisber | Tennessee | Democratic | Jan 31, 1960 | 22 years, 275 days | Nov 2, 1982 – Nov 5, 2002 | |
| Michael G. Kirby | Wisconsin | Democratic | Apr 2, 1952 | 22 years, 279 days | Jan 6, 1975 – Jan 3, 1983 | |
| Avery Frix | Oklahoma | Republican | Mar 29, 1994 | 22 years, 286 days | Jan 9, 2017 – Nov 23, 2022 | |
| William Lowndes | South Carolina | Democratic-Republican | Feb 11, 1782 | 22 years, 289 days | Nov 26, 1804 – Nov 24, 1808 | Later U.S. representative (1811–1822). |
| Kyle Hilbert | Oklahoma | Republican | Mar 23, 1994 | 22 years, 292 days | Jan 9, 2017 – present | Later speaker pro tempore (2022–present). |
| Susan Engeleiter | Wisconsin | Republican | Mar 18, 1952 | 22 years, 294 days | Jan 6, 1975 – Jan 3, 1979 | Later state senator (1980–1989), nominee for U.S. senator (1988) and administrator of the Small Business Administration (1989–1991). |
| William M. McNicol | Connecticut | Democratic | Mar 16, 1896 | 22 years, 298 days | Jan 8, 1919 – Jan 5, 1921 | |
| Hans Hunt | Wyoming | Republican | Mar 18, 1988 | 22 years, 299 days | Jan 11, 2011 – Oct 4, 2021 | |
| Joshua Putnam | South Carolina | Republican | Nov 10, 1988 | 22 years, 299 days | Sep 5, 2011 – Nov 12, 2018 | |
| Trey Stewart | Maine | Republican | Feb 7, 1994 | 22 years, 304 days | Dec 7, 2016 – Dec 2, 2020 | Later state senator (2020–present) and senate minority leader (2022–present). |
| Thomas Johnson Martin | Texas | Democratic | Mar 10, 1894 | 22 years, 305 days | Jan 9, 1917 – Sep 29, 1917, Jan 14, 1947 – Sep 21, 1948 | |
| Lauren Plawecki | Michigan | Democratic | Jan 29, 1994 | 22 years, 305 days | Nov 29, 2016 – Jan 1, 2017 | Daughter of Julie Plawecki. |
| James P. Hurrell | Massachusetts | Democratic | Mar 1, 1944 | 22 years, 309 days | Jan 4, 1967 – Jan 1, 1969, Jan 6, 1971 – Jan 5, 1977 | |
| Martin Olav Sabo | Minnesota | Democratic | Feb 28, 1938 | 22 years, 310 days | Jan 3, 1961 – 1978 | Later speaker of the state House (1973–1979) and U.S. representative (1979–2007). |
| Edward B. Jackson | Virginia | Democratic-Republican | Jan 25, 1793 | 22 years, 313 days | Dec 4, 1815 – Dec 7, 1818 | Son of George Jackson and younger brother of John G. Jackson. Later U.S. representative (1820–1823). |
| Jake Highfill | Iowa | Republican | Mar 3, 1990 | 22 years, 317 days | Jan 14, 2013 – Nov 6, 2018 | |
| Avery Bourne | Illinois | Republican | Mar 30, 1992 | 22 years, 321 days | Feb 14, 2015 – Jan 11, 2023 | Youngest-ever Illinois legislator. Later candidate for lieutenant governor (2022) as the running mate of Richard Irvin. |
| Jim Joseph Carmichall | Texas | Democratic | Feb 27, 1930 | 22 years, 321 days | Jan 13, 1953 – Jan 8, 1957 | |
| Thomas A. Ledwith | New York | Democratic | Feb 14, 1840 | 22 years, 321 days | Jan 1, 1863 – Dec 31, 1863 | Later candidate for mayor of New York City (1870) and state senator (1874–1875). |
| C. William O'Neill | Ohio | Republican | Feb 14, 1916 | 22 years, 321 days | Jan 1, 1939 – Jan 1, 1951 | At the time the youngest-ever Ohio state representative. Later became the youngest-ever speaker of the Ohio House, youngest-ever Ohio attorney general and youngest-ever Ohio governor, and elected justice of the state Supreme Court at age 44. |
| Jim Jontz | Indiana | Democratic | Dec 18, 1951 | 22 years, 323 days | Nov 6, 1974 – Nov 7, 1984 | Later state senator (1984–1986), U.S. representative (1987–1993) and nominee for U.S. senator (1994). |
| Chester Biesen | Washington | Republican | Feb 18, 1904 | 22 years, 326 days | Jan 10, 1927 – Jan 12, 1931 | |
| LaFayette Duckett | Texas | Democratic | Feb 19, 1918 | 22 years, 330 days | Jan 14, 1941 – Jan 14, 1947 | |
| William Johnson | South Carolina | Democratic-Republican | Dec 27, 1771 | 22 years, 332 days | Nov 24, 1794 – Nov 24, 1800 | Later speaker of the state House (1798–1800) and associate justice of the Supreme Court (1804–1834). |
| Gregory W. Sullivan | Massachusetts | Democratic | Jan 29, 1952 | 22 years, 337 days | Jan 1, 1975 – Jan 2, 1985 | |
| Samuel P. Walsh | Wisconsin | Republican | Jan 30, 1902 | 22 years, 341 days | Jan 5, 1925 – Jan 3, 1927 | |
| Kenneth M. Lemanski | Massachusetts | Democratic | Jan 27, 1954 | 22 years, 344 days | Jan 5, 1977 – Jan 3, 1979, Jan 7, 1981 – Jan 6, 1993 | |
| Jim T. Lindsey | Texas | Democratic | Feb 1, 1926 | 22 years, 345 days | Jan 11, 1949 – Jan 8, 1957 | Later speaker of the state House (1955–1957). |
| Keith R. McCall | Pennsylvania | Democratic | Dec 16, 1959 | 22 years, 350 days | Dec 1, 1982 – Dec 1, 2010 | Son of Thomas J. McCall. Later speaker of the state House (2009–2010). |
| Joseph Grigsby Smyth | Texas | Democratic | Feb 25, 1847 | 22 years, 350 days | Feb 10, 1870 – Jan 14, 1873 | Son of George W. Smyth. |
| Steven C. Brist | Wisconsin | Democratic | Jan 16, 1954 | 22 years, 353 days | Jan 3, 1977 – Jan 3, 1979, Jan 3, 1983 – Jan 5, 1987 | |
| John Gray | Massachusetts | Republican | Jan 12, 1956 | 22 years, 356 days | Jan 3, 1979 – Jan 2, 1985 | |
| Harry T. Burn | Tennessee | Republican | Nov 12, 1895 | 22 years, 358 days | Nov 5, 1918 – Nov 7, 1922 | Later state senator (1948–1952). |
| Andrew P. Quigley | Massachusetts | Democratic | Jan 13, 1926 | 22 years, 358 days | Jan 5, 1949 – Jan 3, 1951 | Later state senator (1951–1957) and mayor of Chelsea (1952–1955). |
| Mildred Barber Abel | Wisconsin | Republican | Jan 9, 1902 | 22 years, 362 days | Jan 5, 1925 – Jan 3, 1927 | |
| Leo E. Diehl | Massachusetts | Democratic | Jan 9, 1914 | 22 years, 363 days | Jan 6, 1937 – Jan 1, 1941 | |
| John Robinson | Virginia | Independent | Feb 3, 1705 | 22 years, 363 days | Feb 1, 1728 – May 8, 1769 | Later speaker of the House (1738–1766). |
| Raymond O. Baker | Connecticut | Democratic | 1896 | 22 years | Jan 8, 1919 – Jan 5, 1921, Jan 3, 1923 – Jan 7, 1925 | |
| William F. Bogue | Connecticut | Democratic | 1866 | 22 years | Jan 9, 1889 – Jan 7, 1891 | |
| Lawrence E. Carlson | Indiana | Republican | 1902 | 22 years | Nov 5, 1924 – Nov 7, 1928 | Later state senator (1934–1942). |
| Steve Fowler | Nebraska | Democratic | 1950 | 22 years | Jan 5, 1973 – Jan 5, 1983 | |
| George T. Greig | Washington | Democratic | 1914 | 22 years | Jan 11, 1937 – Jan 9, 1939 | |
| Allan A. Hall | Connecticut | Democratic | 1896 | 22 years | Jan 8, 1919 – Jan 5, 1921 | |
| Latham Hull | Connecticut | Democratic | 1870 | 22 years | Jan 4, 1893 – Jan 9, 1895, Jan 4, 1905 – Jan 9, 1907 | |
| Olin E. Hunt | Connecticut | Republican | 1866 | 22 years | Jan 9, 1889 – Jan 7, 1891 | |
| Ben Jickling | Vermont | Independent | 1994 | 22 years | Jan 4, 2017 – Sep 1, 2019 | |
| Spencer Darwin Pettis | Missouri | Democratic-Republican | 1802 | 22 years | Nov 15, 1824 – Jul 22, 1826 | Since Pettis was only 22 years old, his swearing-in was in violation of the state constitution's age requirement of 24 years. Later Secretary of State of Missouri (1826–1828) and U.S. representative (1829–1831). |
| Arthur B. Porter | Connecticut | Democratic | 1866 | 22 years | Jan 9, 1889 – Jan 7, 1891 | |
| Arthur M. Proulx | Connecticut | Republican | 1904 | 22 years | Jan 5, 1927 – Jan 9, 1929 | |
| Andrew Rizner | Connecticut | Republican | 1898 | 22 years | Jan 5, 1921 – Jan 3, 1923 | |
| Michael B. Smith | Washington | Democratic | 1912 | 22 years | Jan 14, 1935 – Jan 13, 1941 | |
| Samuel L. Stevens | Connecticut | Democratic | 1890 | 22 years | Jan 8, 1913 – Jan 6, 1915 | |
| Joseph Alston | South Carolina | Democratic-Republican | 1779 | 22–23 years | Nov 22, 1802 – Nov 26, 1804, Nov 20, 1805 – Dec 10, 1812 | Son of William Alston. Later speaker of the state House (1805–1808, 1809–1812) and governor (1812–1814). |
| Felix Grundy | Kentucky | Democratic-Republican | Sep 11, 1777 | 22–23 years | 1800–1802, 1804–1806 | Later U.S. representative (1811–1814), Tennessee state representative (1819–1825), U.S. senator (1829–1838, 1839–1840) and U.S. attorney general (1838–1839). |
| Mann Page | Virginia | Independent | 1749 | 22–23 years | 1772 – Dec 21, 1778 | Delegate to the Continental Congress (1777–1778). |
| Dave Gruenes | Minnesota | Republican | Jan 6, 1958 | 23 years, 0 days | Jan 6, 1981 – Jan 2, 1995 | |
| Eugene G. Walker | Connecticut | Republican | Jan 2, 1888 | 23 years, 2 days | Jan 4, 1911 – Jan 6, 1915 | |
| Thomas Edward Campbell | Arizona | Republican | Jan 18, 1878 | 23 years, 3 days | Jan 21, 1901 – Jan 19, 1903 | Later governor (1917, 1919–1923). |
| Bradley Fritts | Illinois | Republican | Jan 8, 2000 | 23 years, 3 days | Jan 11, 2023 – present | Youngest-ever elected Illinois legislator, though Avery Bourne was younger at the time of her appointment. |
| Alan Schlesinger | Connecticut | Republican | Jan 4, 1958 | 23 years, 3 days | Jan 7, 1981 – Jan 6, 1993 | Later mayor of Derby (1994–1998) and nominee for U.S. senator (2006). |
| Thomas J. Jochum | Iowa | Democratic | Dec 25, 1951 | 23 years, 7 days | Jan 1, 1975 – Jan 1, 1993 | |
| Donald P. Hutchinson | Maryland | Democratic | Dec 31, 1945 | 23 years, 8 days | Jan 8, 1969 – Jan 8, 1975 | Later state senator (1975–1978) and Baltimore County Executive (1978–1986). |
| Matt Windschitl | Iowa | Republican | Dec 30, 1983 | 23 years, 9 days | Jan 8, 2007 – present | Later speaker pro tempore (2014–2020) and majority leader (2020–present). |
| Sean Garballey | Massachusetts | Democratic | Feb 22, 1985 | 23 years, 11 days | Mar 4, 2008 – present | |
| Edgar Gonzalez Jr. | Illinois | Democratic | Dec 25, 1996 | 23 years, 16 days | Jan 10, 2020 – present | |
| Robert Y. Hayne | South Carolina | Democratic-Republican | Nov 10, 1791 | 23 years, 18 days | Nov 28, 1814 – Dec 18, 1818 | Later speaker of the state House (1818), state attorney general (1818–1822), U.S. senator (1823–1832), governor (1832–1834) and mayor of Charleston (1836–1837). |
| Bob Brown | Montana | Republican | Dec 11, 1947 | 23 years, 24 days | Jan 4, 1971 – 1974 | Later state senator (1975–1997), senate president (1995–1996), state secretary of state (2001–2005) and nominee for governor (2004). |
| Clarence Mitchell III | Maryland | Democratic | Dec 14, 1939 | 23 years, 26 days | Jan 9, 1963 – 1967 | Later state senator (1967–1986). |
| Joe Kelton Wells | Texas | Democratic | Dec 15, 1909 | 23 years, 26 days | Jan 10, 1933 – Jan 12, 1937 | |
| Garrett Love | Kansas | Republican | Dec 12, 1987 | 23 years, 29 days | Jan 10, 2011 – Jan 9, 2017 | Youngest-ever Kansas state senator. |
| Solomon Goldstein-Rose | Massachusetts | Democratic | Dec 5, 1993 | 23 years, 30 days | Jan 4, 2017 – Jan 2, 2019 | Left the Democratic Party in February 2018. |
| Solomon Goldstein-Rose | Massachusetts | Independent | Dec 5, 1993 | 23 years, 30 days | Jan 4, 2017 – Jan 2, 2019 | Left the Democratic Party in February 2018. |
| Thomas F. Grady | New York | Democratic | Nov 29, 1853 | 23 years, 33 days | Jan 1, 1877 – Dec 31, 1879 | Later state senator (1882–1883, 1889, 1896–1912) and senate minority leader (1899–1910). |
| George Francis Monaghan | Michigan | Democratic | Nov 28, 1875 | 23 years, 37 days | Jan 4, 1899 – 1900 | |
| Theodore W. Brevard Jr. | Florida | [?] | Aug 26, 1835 | 23 years, 39 days | Oct 4, 1858 – 1859 | Son of state comptroller Theodorus W. Brevard. Later state senator (1865–1866). |
| Ben H. Butcher | West Virginia | Democratic | Oct 23, 1855 | 23 years, 39 days | Dec 1, 1878 – Dec 1, 1880, Dec 1, 1930 – Feb 12, 1937 | Later Colorado state legislator. |
| George Burkman Norton | Massachusetts | Democratic | Nov 24, 1921 | 23 years, 40 days | Jan 3, 1945 – Jan 5, 1949 | |
| George C. Windrow | Wisconsin | Democratic | Nov 16, 1931 | 23 years, 48 days | Jan 3, 1955 – Jan 7, 1957 | |
| William DuBois | Wyoming | Republican | Nov 15, 1879 | 23 years, 51 days | Jan 5, 1903 – Jan 4, 1909 | Later state senator (1909–1913). |
| Jay Hooper | Vermont | Democratic | Nov 12, 1993 | 23 years, 53 days | Jan 4, 2017 – present | Son of Donald M. Hooper. |
| David Plawecki | Michigan | Democratic | Nov 8, 1947 | 23 years, 54 days | Jan 1, 1971 – Jan 1, 1983 | |
| Mike Blouin | Iowa | Democratic | Nov 7, 1945 | 23 years, 55 days | Jan 1, 1969 – Jan 1, 1973 | Later state senator (1973–1975), U.S. representative (1975–1979) and candidate for governor (2006). |
| Stacey Dahl | North Dakota | Republican | Oct 7, 1981 | 23 years, 55 days | Dec 1, 2004 – Dec 1, 2012 | |
| William E. Kirkpatrick | Massachusetts | Republican | Nov 12, 1901 | 23 years, 56 days | Jan 7, 1925 – Jan 4, 1939 | |
| Josh Svaty | Kansas | Democratic | Nov 7, 1979 | 23 years, 62 days | Jan 8, 2003 – July 14, 2009 | Later state secretary of agriculture (2009–2011) and candidate for governor (2018). |
| Theodore Roosevelt | New York | Republican | Oct 27, 1858 | 23 years, 66 days | Jan 1, 1882 – Dec 31, 1884 | President of the United States (1901–1909). Youngest-ever U.S. president. |
| James D. Cole | Texas | Democratic | Nov 3, 1937 | 23 years, 68 days | Jan 10, 1961 – Jan 14, 1975 | |
| Charles Royce Boss | Connecticut | Republican | Nov 1, 1871 | 23 years, 69 days | Jan 9, 1895 – Jan 6, 1897 | |
| Richard Russell Jr. | Georgia | Democratic | Nov 2, 1897 | 23 years, 69 days | Jan 10, 1921 – Jan 12, 1931 | Later governor (1931–1933), U.S. senator (1933–1971) and senate president pro tempore (1969–1971). |
| John C. Thompson Jr. | Wisconsin | Republican | Oct 25, 1901 | 23 years, 72 days | Jan 5, 1925 – Jan 3, 1927 | |
| Anthony J. Opachen | Wisconsin | Democratic | Oct 18, 1909 | 23 years, 78 days | Jan 4, 1933 – Jan 9, 1935 | |
| Arthur F. Gillen | Minnesota | Independent | Oct 10, 1919 | 23 years, 87 days | Jan 5, 1943 – Jan 1, 1951 | Later state senator (1951–1959). |
| John Montgomery | Oklahoma | Republican | Aug 13, 1991 | 23 years, 88 days | Nov 9, 2014 – Nov 21, 2018 | Later state senator (2018–2023). |
| Rick S. Bender | Washington | Democratic | Oct 9, 1949 | 23 years, 91 days | Jan 8, 1973 – Jan 10, 1983 | |
| Ben Cardin | Maryland | Democratic | Oct 5, 1943 | 23 years, 92 days | Jan 5, 1967 – Jan 6, 1987 | Son of Meyer Cardin. Later speaker of the state House (1979–1987), U.S. representative (1987–2007) and U.S. senator (2007–2025). |
| Tim Baxter | New Hampshire | Republican | Aug 31, 1997 | 23 years, 93 days | Dec 2, 2020 – Dec 7, 2022 | |
| Edward Boland | Massachusetts | Democratic | Oct 1, 1911 | 23 years, 93 days | Jan 2, 1935 – Jan 1, 1941 | Later U.S. representative (1953–1989). |
| Sammy D. Dalton | West Virginia | Democratic | Aug 29, 1951 | 23 years, 94 days | Dec 1, 1974 – Dec 1, 1986 Dec 1, 1988 – Dec 1, 1990 Dec 1, 1996 – Dec 1, 2000 | Later state senator (1990–1994). |
| Joseph Clark Alvord | Connecticut | Republican | Oct 1, 1858 | 23 years, 95 days | Jan 4, 1882 – Jan 3, 1883 | |
| Jennifer Sullivan | Florida | Republican | Aug 1, 1991 | 23 years, 97 days | Nov 6, 2014 – present | |
| Antonio Felipe | Connecticut | Democratic | Feb 2, 1996 | 23 years, 100 days | May 13, 2019 – present | |
| Wayne Gibbens | Texas | Democratic | Oct 1, 1937 | 23 years, 101 days | Jan 10, 1961 – Jan 7, 1966 | |
| Selena Torres | Nevada | Democratic | Jul 27, 1995 | 23 years, 103 days | Nov 7, 2018 – present | |
| J. Keith Arnold | Florida | Democratic | Jul 21, 1959 | 23 years, 104 days | Nov 2, 1982 – present | |
| Thomas Bennett Jr. | South Carolina | Democratic-Republican | Aug 14, 1781 | 23 years, 104 days | Nov 26, 1804 – Nov 24, 1806, Nov 28, 1808 – Nov 26, 1810, Nov 23, 1812 – Dec 19, 1812 Sep 15, 1813 – Nov 23, 1818 | Later speaker of the state House (1814–1818), state senator (1820, 1837–1840) and governor (1820–1822). |
| Arthur L. Padrutt | Wisconsin | Progressive | Sep 26, 1917 | 23 years, 104 days | Jan 8, 1941 – Jan 3, 1945 | |
| Clementa C. Pinckney | South Carolina | Democratic | Jul 30, 1973 | 23 years, 104 days | Nov 11, 1996 – Nov 13, 2000 | Later state senator (2000–2015). |
| Arthur M. Brown | Connecticut | Republican | Sep 24, 1877 | 23 years, 107 days | Jan 9, 1901 – Jan 7, 1903 | Later state senator (1903–1905) and nominee for governor (1936). |
| Mary Shadow | Tennessee | Democratic | Jul 17, 1925 | 23 years, 108 days | Nov 2, 1948 – Nov 4, 1952 | |
| Richard G. Beebe | Connecticut | Democratic | Sep 18, 1857 | 23 years, 109 days | Jan 5, 1881 – Jan 3, 1883, Jan 4, 1899 – Jan 9, 1901 | |
| J. D. Lynch | Montana | Democratic | Sep 17, 1947 | 23 years, 109 days | Jan 4, 1971 – Jan 3, 1979 | Later state senator (1982–2001). |
| Rodolphe G. Bessette | Massachusetts | Democratic | Sep 14, 1911 | 23 years, 110 days | Jan 2, 1935 – Jan 4, 1939 Jan 1, 1941 – Jan 3, 1951 | |
| Hugo Black III | Florida | Democratic | Jul 15, 1953 | 23 years, 110 days | Nov 2, 1976 – Nov 7, 1978 | Grandson of Hugo Black. |
| Alfred D. Clark | New Hampshire | Republican | Sep 14, 1877 | 23 years, 110 days | Jan 2, 1901 – [?] | |
| Alfred A. Minahan Jr. | Massachusetts | Democratic | Sep 14, 1953 | 23 years, 113 days | Jan 5, 1977 – Jan 2, 1985 | |
| Riley Keaton | West Virginia | Republican | Aug 9, 1997 | 23 years, 114 days | Dec 1, 2020 – Oct 12, 2023 | |
| Jason Mumpower | Tennessee | Republican | Sep 22, 1973 | 23 years, 114 days | Jan 14, 1997 – Jan 11, 2011 | Later minority leader (2007–2009), majority leader (2009–2011) and state comptroller of the treasury (2021–present). |
| Robert L. Nardone | Massachusetts | Democratic | Sep 13, 1953 | 23 years, 114 days | Jan 5, 1977 – Jan 3, 1979 | |
| Charles Finnell | Texas | Democratic | Sep 16, 1943 | 23 years, 116 days | Jan 10, 1967 – Jan 14, 1975, Jan 11, 1977 – Jan 12, 1999 | |
| Daniel Pae | Oklahoma | Republican | Jul 25, 1995 | 23 years, 119 days | Nov 21, 2018 – present | |
| Clinton Kersey | Texas | Democratic | Sep 11, 1915 | 23 years, 121 days | Jan 10, 1939 – Jan 12, 1943 | |
| Rudolph Tesar | Nebraska | Democratic | Sep 2, 1907 | 23 years, 127 days | Jan 7, 1931 – 1935 | At the time the youngest-ever Nebraska state legislator. |
| Jonathan Karlen | Montana | Democratic | Aug 27, 1999 | 23 years, 128 days | Jan 2, 2023 – present | |
| Kerry Rich | Alabama | Republican | Jun 25, 1951 | 23 years, 134 days | Nov 6, 1974 – Nov 8, 1978, Nov 7, 1990 – Nov 9, 1994, Nov 3, 2010 – Nov 9, 2022 | |
| Cedric Gates | Hawaii | Democratic | Jun 22, 1993 | 23 years, 139 days | Nov 8, 2016 – present | |
| Charles I. Quirk | Massachusetts | Democratic | Aug 15, 1871 | 23 years, 140 days | Jan 2, 1895 – Jan 5, 1898 | Later state senator (1898–1899). |
| Tom Connally | Texas | Democratic | Aug 19, 1877 | 23 years, 142 days | Jan 8, 1901 – Jan 10, 1905 | Later U.S. representative (1917–1929) and U.S. senator (1929–1953). |
| Caleb Ness | Maine | Republican | Jul 16, 1999 | 23 years, 144 days | Dec 7, 2022 – present | |
| Rick Quinn Jr. | South Carolina | Republican | Jun 22, 1965 | 23 years, 145 days | Nov 14, 1988 – Nov 8, 2004, Nov 8, 2010 – Dec 13, 2017 | Later majority leader (1999–2004). |
| Howard W. Taylor | Connecticut | Democratic | Aug 11, 1858 | 23 years, 146 days | Jan 4, 1882 – Jan 3, 1883, Jan 8, 1913 – Jan 8, 1919 | |
| John Whitmire | Texas | Democratic | Aug 13, 1949 | 23 years, 149 days | Jan 9, 1973 – Jan 11, 1983 | Later state senator (1983–2023) and mayor of Houston (2024–present). |
| Charles J. Faulkner | Virginia | National Republican | Jul 6, 1806 | 23 years, 154 days | Dec 7, 1829 – Dec 5, 1830, Dec 5, 1831 – Dec 1, 1833, Jan 1, 1838 – Dec 4, 1842 | Later state delegate (1848–1849) and U.S. representative (1851–1859, 1875–1877). |
| Charles J. Faulkner | Virginia | Whig | Jul 6, 1806 | 23 years, 154 days | Dec 7, 1829 – Dec 5, 1830, Dec 5, 1831 – Dec 1, 1833, Jan 1, 1838 – Dec 4, 1842 | Later state delegate (1848–1849) and U.S. representative (1851–1859, 1875–1877). |
| Frederick Joseph Duff | Texas | Democratic | Aug 6, 1859 | 23 years, 156 days | Jan 9, 1883 – Jan 13, 1885 | |
| Frederick L. Zimmerman | New York | Democratic | Jul 28, 1906 | 23 years, 157 days | Jan 1, 1930 – Dec 31, 1935 | |
| Hugh Parmer | Texas | Democratic | Aug 3, 1939 | 23 years, 158 days | Jan 8, 1963 – Jan 12, 1965 | Later mayor of Fort Worth (1977–1979), state senator (1983–1991), state senate president pro tempore (1990) and nominee for U.S. senator (1990). |
| Cornelius T. Young | Wisconsin | Democratic | Jul 28, 1907 | 23 years, 161 days | Jan 5, 1931 – Jan 3, 1939 | Later speaker of the state House (1933–1935) and state senator (1939–1943). |
| Daniel J. Kiley | Massachusetts | Democratic | Jul 27, 1874 | 23 years, 162 days | Jan 5, 1898 – Jan 4, 1899, Jan 1, 1902 – Jan 6, 1904 | |
| Thomas D'Alesandro Jr. | Maryland | Democratic | Aug 1, 1903 | 23 years, 164 days | Jan 12, 1927 – 1933 | Later U.S. representative (1939–1947) and mayor of Baltimore (1947–1959). |
| Julian Ivey | Maryland | Democratic | Aug 3, 1995 | 23 years, 169 days | Jan 19, 2019 – present | Son of Glenn and Jolene Ivey. |
| Thomas H. Spurr Jr. | Massachusetts | Democratic | Jul 17, 1927 | 23 years, 170 days | Jan 3, 1951 – Jan 7, 1953 | |
| John W. Connelly | Massachusetts | Democratic | Jul 16, 1874 | 23 years, 173 days | Jan 5, 1898 – Jan 4, 1899 | |
| James J. Kiley | Massachusetts | Democratic | Jul 5, 1911 | 23 years, 181 days | Jan 2, 1935 – Jan 6, 1937 | |
| Louis J. Lefkowitz | New York | Republican | Jul 3, 1904 | 23 years, 182 days | Jan 1, 1928 – Dec 31, 1930 | Later state attorney general (1957–1979) and nominee for mayor of New York City (1961). |
| Hunter Cantrell | Minnesota | Democratic | Jul 10, 1995 | 23 years, 182 days | Jan 8, 2019 – Jan 5, 2021 | |
| Melvin Ernest Nunnery | South Carolina | Democratic | May 11, 1951 | 23 years, 184 days | Nov 11, 1974 – Nov 8, 1982 | |
| Jason Bedrick | New Hampshire | Republican | Jun 5, 1983 | 23 years, 184 days | Dec 6, 2006 – Dec 3, 2008 | |
| Alan J. Dixon | Illinois | Democratic | Jul 7, 1927 | 23 years, 187 days | Jan 10, 1951 – Jan 1963 | Later state senator (1963–1971), state treasurer (1971–1977), state secretary of state (1977–1981) and U.S. senator (1981–1993). |
| Nathaniel Macon | North Carolina | Independent | Dec 17, 1757 | 23 years, 188 days | Jun 23, 1781 – May 18, 1782, 1784 | Later U.S. representative (1791–1815), speaker of the House (1801–1807), U.S. senator (1815–1828) and president pro tempore of the U.S. Senate (1826–1827). |
| Mitchel Perrizo Jr. | Minnesota | Independent | Jul 3, 1917 | 23 years, 188 days | Jan 7, 1941 – 1942 | Member of the Democratic Party. |
| Claude R. Porter | Iowa | Democratic | Jul 8, 1872 | 23 years, 189 days | Jan 13, 1896 – Jan 8, 1900 | Later state senator (1900–1904) and nominee for governor (1906, 1910, 1918) and for U.S. senator (1920, 1926). |
| Benjamin Charles Garside | Wisconsin | High tariff and anti-monopoly | Jun 26, 1863 | 23 years, 191 days | Jan 3, 1887 – Jan 7, 1889 | |
| Russ Meekins Jr. | Alaska | Democratic | Jun 29, 1949 | 23 years, 193 days | Jan 8, 1973 – Jan 20, 1975, Jan 10, 1977 – Jan 17, 1983 | |
| George M. Curtis | New York | Democratic | Jun 20, 1840 | 23 years, 195 days | Jan 1, 1864 – Dec 31, 1864, Jan 1, 1866 – Dec 31, 1866 | |
| Lindley Beckworth | Texas | Democratic | Jun 30, 1913 | 23 years, 196 days | Jan 12, 1937 – Jan 10, 1939 | Later U.S. representative (1939–1953, 1957–1967) and state senator (1971–1973). |
| George Greene | Iowa | Democratic | Apr 15, 1817 | 23 years, 201 days | Nov 2, 1840 – Dec 4, 1842 | |
| Myron Sulzberger | New York | Democratic | Jun 14, 1878 | 23 years, 201 days | Jan 1, 1902 – Dec 31, 1903 | |
| Gregory G. Gruse | Michigan | Republican | Jun 20, 1961 | 23 years, 203 days | Jan 9, 1985 – Jan 14, 1987 | |
| William P. Nagle Jr. | Massachusetts | Democratic | Jun 10, 1951 | 23 years, 205 days | Jan 1, 1975 – Jan 1, 2003 | |
| George Nigh | Oklahoma | Democratic | Jun 9, 1927 | 23 years, 207 days | Jan 2, 1951 – Jan 6, 1959 | Later lieutenant governor (1959–1963, 1967–1979) and governor (1963, 1979–1987). |
| John Paul O'Brien | Massachusetts | Democratic | Jun 10, 1937 | 23 years, 208 days | Jan 4, 1961 – Jan 2, 1963, Jan 6, 1965 – Jan 3, 1973 | |
| Reuben E. Senterfitt | Texas | Democratic | Jun 18, 1917 | 23 years, 210 days | Jan 14, 1941 – Jan 11, 1955 | Later speaker of the state House (1951–1955). |
| John L. Donovan | Massachusetts | Democratic | Jun 3, 1876 | 23 years, 214 days | Jan 3, 1900 – Jan 1, 1902, Jan 5, 1910 – Jan 4, 1911, Jan 3, 1912 – Jan 4, 1919 | |
| Norman R. Klug | Wisconsin | Republican | Jun 9, 1905 | 23 years, 214 days | Jan 9, 1929 – Jan 7, 1931 | |
| James Buchanan | Pennsylvania | Federalist | Apr 23, 1791 | 23 years, 222 days | Dec 1, 1814 – Dec 1, 1816 | President of the United States (1857–1861) |
| Adam Zabner | Iowa | Democratic | May 24, 1999 | 23 years, 222 days | Jan 1, 2023 – present | |
| Edward Ryder | Ohio | Republican | May 4, 1948 | 23 years, 225 days | Dec 15, 1971 – Dec 31, 1972 | |
| Stephen A. Douglas | Illinois | Democratic | Apr 23, 1813 | 23 years, 226 days | Dec 5, 1836 – [?] | U.S. senator (1847–1861) and nominee for president of the United States (1860). |
| Pat Grassley | Iowa | Republican | May 26, 1983 | 23 years, 227 days | Jan 8, 2007 – present | Grandson of Chuck Grassley. Later speaker of the state House (2020–present). |
| John G. Rowland | Connecticut | Republican | May 24, 1957 | 23 years, 228 days | Jan 7, 1981 – Jan 9, 1985 | Later U.S. representative (1985–1991) and governor (1995–2004). |
| Aaron Schock | Illinois | Republican | May 28, 1981 | 23 years, 229 days | Jan 12, 2005 – Jan 3, 2009 | Later U.S. representative (2009–2015). |
| Richard N. Gottfried | New York | Democratic | May 16, 1947 | 23 years, 230 days | Jan 1, 1971 – Dec 31, 2022 | Longest-serving state legislator in New York history. |
| Richard Baker | Louisiana | Democratic | May 22, 1948 | 23 years, 233 days | Jan 10, 1972 – Jan 1987 | Switched to the Republican Party in 1986. Later U.S. representative (1987–2008) |
| Richard Baker | Louisiana | Republican | May 22, 1948 | 23 years, 233 days | Jan 10, 1972 – Jan 1987 | Switched to the Republican Party in 1986. Later U.S. representative (1987–2008) |
| Harry W. Haines | New Hampshire | Democratic | May 11, 1877 | 23 years, 236 days | Jan 2, 1901 – [?] | |
| J. Hamilton Lewis | Washington | Democratic | May 18, 1863 | 23 years, 237 days | Jan 10, 1887 – Jan 14, 1889 | Later candidate for governor of Washington (1892), U.S. representative (1897–1899), candidate for governor of Illinois (1908), U.S. senator (1913–1919, 1931–1939) and nominee for governor of Illinois (1920). |
| J. Vander Stoep | Washington | Republican | May 20, 1957 | 23 years, 237 days | Jan 12, 1981 – Jan 12, 1987 | |
| John Buckley | Connecticut | Republican | May 12, 1885 | 23 years, 239 days | Jan 6, 1909 – 1910 1921–1922 | |
| Thomas W. Ferry | Michigan | Republican | Jun 10, 1827 | 23 years, 240 days | Feb 5, 1851 – Jan 5, 1853 | Later state senator (1857–1859), U.S. representative (1865–1871), U.S. senator (1871–1883) and president pro tempore of the U.S. Senate (1875–1879). |
| Steve Gunderson | Wisconsin | Republican | May 10, 1951 | 23 years, 241 days | Jan 6, 1975 – Jul 9, 1979 | Later U.S. representative (1981–1997). |
| Stephen M. Young | Ohio | Democratic | May 4, 1889 | 23 years, 242 days | Jan 1, 1913 – Jan 1, 1917 | Later nominee for state attorney general (1922, 1956), U.S. representative (1933–1937, 1941–1943, 1949–1951) and U.S. senator (1959–1971). |
| John C. Kleczka | Wisconsin | Republican | May 6, 1885 | 23 years, 243 days | Jan 4, 1909 – Jan 6, 1913 | |
| John E. Magenis | Massachusetts | Republican | May 5, 1873 | 23 years, 246 days | Jan 6, 1897 – Jan 4, 1899 | |
| Maurice Bloch | New York | Democratic | Apr 26, 1891 | 23 years, 250 days | Jan 1, 1915 – Dec 31, 1929 | Later minority leader (1924–1929). |
| Rubén Díaz Jr. | New York | Democratic | Apr 26, 1973 | 23 years, 250 days | Jan 1, 1997 – Apr 22, 2009 | Son of Rubén Díaz Sr. Later borough president of the Bronx (2009–2021) and candidate for mayor of New York City (2021). |
| Carmine J. Marasco | New York | Democratic | Apr 26, 1891 | 23 years, 250 days | Jan 1, 1915 – Dec 31, 1915, Jan 1, 1935 – Dec 31, 1937, Jan 1, 1939 – Jan 14, 1941 | Later state senator (1941–1944). |
| Tory Marie Arnberger | Kansas | Republican | May 3, 1993 | 23 years, 251 days | Jan 9, 2017 – present | |
| Bill Finkbeiner | Washington | Democratic | May 5, 1969 | 23 years, 251 days | Jan 11, 1993 – Jan 9, 1995 | Switched to the Republican Party in 1994. Later majority leader of the state senate. |
| Bill Finkbeiner | Washington | Republican | May 5, 1969 | 23 years, 251 days | Jan 11, 1993 – Jan 9, 1995 | Switched to the Republican Party in 1994. Later majority leader of the state senate. |
| Don Kennard | Texas | Democratic | May 6, 1929 | 23 years, 252 days | Jan 13, 1953 – Jan 8, 1963 | Later state senator (1963–1973) and state senate president pro tempore (1969). |
| Daniel Thomas McCormick | New Hampshire | Republican | Apr 25, 1877 | 23 years, 252 days | Jan 2, 1901 – [?] | |
| Thomas Beadle | North Dakota | Republican | Mar 22, 1987 | 23 years, 254 days | Dec 1, 2010 – Dec 1, 2020 | Grandson of Earl Strinden and stepson of Tony Grindberg. Later state treasurer (2021–present). |
| Michael J. McGlynn | Massachusetts | Democratic | Apr 23, 1953 | 23 years, 257 days | Jan 5, 1977 – Jan 3, 1988 | Later mayor of Medford (1988–2016). |
| Joshua Adjutant | New Hampshire | Democratic | Mar 22, 1995 | 23 years, 258 days | Dec 5, 2018 – Apr 1, 2023 | |
| John W. Costello | Massachusetts | Democratic | Apr 20, 1927 | 23 years, 258 days | Jan 3, 1951 – Jan 3, 1961 | Later member of the governor's council (1961–1965). |
| Otto Kotouč | Nebraska | Democratic | Apr 22, 1885 | 23 years, 259 days | Jan 6, 1909 – Jan 8, 1913 | |
| Skyler Wheeler | Iowa | Republican | Apr 24, 1993 | 23 years, 260 days | Jan 9, 2017 – present | |
| John J. O'Connor | Massachusetts | Democratic | Apr 12, 1871 | 23 years, 265 days | Jan 2, 1895 – Jan 6, 1897 | |
| Oscar Raymond Luhring | Indiana | Republican | Feb 11, 1879 | 23 years, 267 days | Nov 5, 1902 – Nov 9, 1904 | Later U.S. representative (1919–1923). |
| Martin J. Schreiber | Wisconsin | Democratic | Apr 8, 1939 | 23 years, 268 days | Jan 1, 1963 – Jan 1, 1971 | Youngest-ever Wisconsin state senator. Son of Martin E. Schreiber. Later lieutenant governor (1971–1977), governor (1977–1979) and candidate for mayor of Milwaukee (1988). |
| Henry Byron Noyes Jr. | Connecticut | Republican | Apr 15, 1871 | 23 years, 269 days | Jan 9, 1895 – Jan 6, 1897 | |
| Peter Shapiro | New Jersey | Democratic | Apr 18, 1952 | 23 years, 270 days | Jan 13, 1976 – Jan 1979 | Later Essex County Executive (1979–1987) and nominee for governor (1985). |
| Philip Erdman | Nebraska | Republican | Apr 7, 1977 | 23 years, 271 days | Jan 3, 2001 – Jan 7, 2009 | |
| Johnny Olszewski | Maryland | Democratic | Sep 10, 1982 | 23 years, 275 days | Jun 12, 2006 – Jan 14, 2015 | Youngest-ever chairman of the Baltimore County Delegation. Later Baltimore County Executive (2019–2025) and U.S. representative (2025–present) |
| Nabeela Syed | Illinois | Democratic | Apr 10, 1999 | 23 years, 276 days | Jan 11, 2023 – present | |
| Casey Kozlowski | Ohio | Republican | Mar 31, 1987 | 23 years, 278 days | Jan 3, 2011 – Dec 31, 2012 | |
| Niraj Antani | Ohio | Republican | Feb 26, 1991 | 23 years, 279 days | Dec 2, 2014 – Dec 31, 2020 | Later state senator (2021–present). |
| John A. Murphy | Wisconsin | Republican | Mar 28, 1863 | 23 years, 281 days | Jan 3, 1887 – Jan 7, 1889 | |
| John Joseph Linehan | Massachusetts | Democratic | Mar 26, 1933 | 23 years, 282 days | Jan 2, 1957 – Jan 4, 1961 | |
| Harold Lloyd Murphy | Georgia | Democratic | Mar 31, 1927 | 23 years, 283 days | Jan 8, 1951 – Jan 9, 1961 | |
| Torrey Westrom | Minnesota | Republican | Mar 27, 1973 | 23 years, 286 days | Jan 7, 1997 – Jan 7, 2013 | Later state senator (2013–present). |
| Corey Mock | North Dakota | Democratic | Feb 17, 1985 | 23 years, 288 days | Dec 1, 2008 – present | Later minority leader (2014–2018). |
| Anton N. Moursund | Texas | Democratic | Mar 26, 1877 | 23 years, 288 days | Jan 8, 1901 – Jan 13, 1903 | Son of Albert Wadel Hansen Moursund. |
| Harry H. Ham | Massachusetts | Republican | Mar 16, 1883 | 23 years, 292 days | Jan 2, 1907 – Jan 4, 1911 | |
| Wesley C. Uhlman | Washington | Democratic | Mar 23, 1935 | 23 years, 295 days | Jan 12, 1959 – Jan 9, 1967 | Later state senator (1967–1969) and mayor of Seattle (1969–1978). |
| Henry Converse Atwill | Massachusetts | Republican | Mar 11, 1872 | 23 years, 296 days | Jan 1, 1896 – Jan 4, 1899 | Later state senator (1899–1901) and state attorney general (1915–1919). |
| Elizabeth M. Tamposi | New Hampshire | Republican | Feb 13, 1955 | 23 years, 296 days | Dec 6, 1978 – Dec 3, 1986 | Later assistant secretary of state for consular affairs (1989–1992). |
| Tony Korioth | Texas | Democratic | Mar 16, 1933 | 23 years, 298 days | Jan 8, 1957 – Sep 10, 1961 | |
| Richard A. Westman | Vermont | Republican | Mar 13, 1959 | 23 years, 298 days | Jan 5, 1983 – Jan 2009 | Later state senator (2011–present). |
| Wayne Stenehjem | North Dakota | Republican | Feb 5, 1953 | 23 years, 300 days | Dec 1, 1976 – Dec 1, 1980 | Later state senator (1980–2000) and state attorney general (2000–2022). |
| Charles S. Fairfax | California | Democratic | Mar 8, 1829 | 23 years, 301 days | Jan 3, 1853 – Jan 1, 1855 | Later speaker of the state House (1854–1855). |
| Thomas Settle | North Carolina | Democratic | Jan 23, 1831 | 23 years, 301 days | Nov 20, 1854 – Nov 19, 1860 | Later speaker of the state House (1858–1860). |
| Archibald A. Stone Jr. | Minnesota | Independent | Mar 7, 1893 | 23 years, 301 days | Jan 2, 1917 – Jan 6, 1919 | |
| Nicholas Paleologos | Massachusetts | Democratic | Mar 9, 1953 | 23 years, 302 days | Jan 5, 1977 – Jan 1, 1991 | |
| Andrew Stein | New York | Democratic | Mar 4, 1945 | 23 years, 303 days | Jan 1, 1969 – Dec 31, 1972 | Later borough president of Manhattan (1978–1985) and president of the New York City Council (1986–1994). |
| Thomas Golden Jr. | Massachusetts | Democratic | Mar 5, 1971 | 23 years, 305 days | Jan 4, 1995 – May 26, 2022 | Later city manager of Lowell (2022–present). |
| William J. Pennock | Washington | Democratic | Mar 10, 1915 | 23 years, 305 days | Jan 9, 1939 – Jan 13, 1947 | Priorly member of the Communist Party. Later co-founder of the state Progressive Party (1948). |
| Harry G. Slater | Wisconsin | Republican | Mar 6, 1905 | 23 years, 307 days | Jan 7, 1929 – Jan 5, 1931 | |
| Victor Ashe | Tennessee | Republican | Jan 1, 1945 | 23 years, 309 days | Nov 5, 1968 – Nov 5, 1974 | Later nominee for U.S. senator (1984) and mayor of Knoxville (1987–2003). |
| Olaf C. Olsen | Wisconsin | Socialist | Feb 26, 1899 | 23 years, 311 days | Jan 3, 1923 – Jan 3, 1927 | |
| Dorothy Bradley | Montana | Democratic | Feb 24, 1947 | 23 years, 315 days | Jan 5, 1971 – Jan 3, 1979, Jan 7, 1985 – Jan 4, 1993 | Later nominee for governor (1992). |
| David Lowry Swain | North Carolina | Independent | Jan 4, 1801 | 23 years, 316 days | Nov 15, 1824 – Jan 8, 1830 | Later governor (1832–1835). |
| David Beasley | South Carolina | Democratic | Feb 26, 1957 | 23 years, 318 days | Jan 9, 1981 – Jan 10, 1995 | Switched to the Republican Party in 1991. Later governor (1995–1999) and executive director of the World Food Programme (2017–present). |
| David Beasley | South Carolina | Republican | Feb 26, 1957 | 23 years, 318 days | Jan 9, 1981 – Jan 10, 1995 | Switched to the Republican Party in 1991. Later governor (1995–1999) and executive director of the World Food Programme (2017–present). |
| Kaniela Ing | Hawaii | Democratic | Dec 24, 1988 | 23 years, 319 days | Nov 7, 2012 – Nov 6, 2018 | |
| Arturo Alonso | Oklahoma | Democratic | Jan 7, 1999 | 23 years, 320 days | Nov 23, 2022 – present | |
| Jeffrey D. Padden | Michigan | Democratic | Feb 22, 1951 | 23 years, 320 days | Jan 8, 1975 – Jan 1985 | |
| Jesse K. Dubois | Illinois | Whig | Jan 14, 1811 | 23 years, 321 days | Dec 1, 1834 – 1840, Dec 4, 1842 – 1844 | Later state auditor of public accounts (1857–1864). |
| Peter Snowe | Maine | Republican | Jan 16, 1943 | 23 years, 325 days | Dec 7, 1966 – Apr 10, 1973 | |
| Patrick N. Hogan | Maryland | Republican | Feb 15, 1979 | 23 years, 327 days | Jan 8, 2003 – Jan 10, 2007 Jan 12, 2011 – Jan 14, 2015 | |
| James Manley Head | Texas | Democratic | Feb 16, 1909 | 23 years, 329 days | Jan 10, 1933 – Jan 12, 1937 | Later state senator (1937–1941). |
| William T. Barry | Kentucky | Democratic-Republican | Feb 5, 1784 | 23 years, 330 days | Jan 1, 1808 – [?] | Later U.S. representative (1810–1811), U.S. senator (1815–1816), state senator (1817–1821), lieutenant governor (1820–1824), commonwealth secretary of state (1824–1825), Democratic Party nominee for governor (1828) and U.S. postmaster general (1829–1835). |
| James Jackson | Georgia | Independent | Sep 21, 1757 | 23 years, 330 days | Aug 17, 1781 – 1783, Jan 4, 1785 – 1787, Jan 12, 1796 – 1798 | Later governor-elect (1788, declined the position), U.S. representative (1789–1791), U.S. senator (1793–1795, 1801–1806) and governor (1798–1801). |
| James Jackson | Georgia | Democratic-Republican | Sep 21, 1757 | 23 years, 330 days | Aug 17, 1781 – 1783, Jan 4, 1785 – 1787, Jan 12, 1796 – 1798 | Later governor-elect (1788, declined the position), U.S. representative (1789–1791), U.S. senator (1793–1795, 1801–1806) and governor (1798–1801). |
| Donald L. Kimball | Iowa | Republican | Feb 15, 1933 | 23 years, 334 days | Jan 14, 1957 – Jan 8, 1961 | |
| John McCandish King | Illinois | Republican | Feb 15, 1927 | 23 years, 334 days | Jan 15, 1951 – Jan 15, 1957 | |
| Bob Giersdorf | Alaska | Democratic | Feb 24, 1935 | 23 years, 336 days | Jan 26, 1959 – Jan 29, 1960, Feb 2, 1960 – Jan 23, 1961 | |
| Rayford Price | Texas | Democratic | Feb 9, 1937 | 23 years, 336 days | Jan 10, 1961 – Jan 9, 1973 | Later speaker of the state House (1972–1973). |
| James Monroe | Virginia | Independent | Apr 28, 1758 | 23 years, 338 days | Apr 1, 1782 – May 5, 1783, Oct 15, 1787 – Oct 19, 1789, Dec 3, 1810 – Jan 16, 1811 | Founding Father of the United States and U.S. President |
| Marilinda Garcia | New Hampshire | Republican | Jan 1, 1983 | 23 years, 339 days | Dec 6, 2006 – Dec 3, 2008, Apr 29, 2009 – Dec 2, 2014 | |
| Kylie Oversen | North Dakota | Democratic | Feb 3, 1989 | 23 years, 340 days | Jan 8, 2013 – Dec 5, 2016 | Elected Chair of the North Dakota Democratic-NPL at 26, making her the youngest U.S. state party chair at the time. |
| Jonathan Kreiss-Tomkins | Alaska | Democratic | Feb 7, 1989 | 23 years, 343 days | Jan 15, 2013 – Jan 17, 2023 | |
| Walker Hines | Louisiana | Democratic | Jan 31, 1984 | 23 years, 348 days | Jan 14, 2008 – Jan 9, 2012 | Switched to the Republican Party in November 2010. |
| Walker Hines | Louisiana | Republican | Jan 31, 1984 | 23 years, 348 days | Jan 14, 2008 – Jan 9, 2012 | Switched to the Republican Party in November 2010. |
| Joe B. Cannon | Texas | Democratic | Jan 29, 1935 | 23 years, 349 days | Jan 13, 1959 – Jan 12, 1965 | |
| Littleton Waller Tazewell | Virginia | Democratic-Republican | Dec 17, 1774 | 23 years, 351 days | Dec 3, 1798 – Dec 7, 1801, Dec 3, 1804 – Dec 1, 1806, Nov 11, 1816 – Dec 1, 1817 | Son of Henry Tazewell. Later U.S. representative (1800–1801), U.S. senator (1824–1832), president pro tempore of the U.S. Senate (1832) and governor (1834–1836). |
| Carleton Fulbright | Missouri | Democratic | Jan 15, 1911 | 23 years, 352 days | Jan 2, 1935 – 1937 | Since Fulbright was not yet 24 years old, his swearing-in was in violation of the state constitution's age requirement. |
| Ibra Charles Blackwood | South Carolina | Democratic | Nov 21, 1878 | 23 years, 354 days | Nov 10, 1902 – Nov 12, 1906 | Later governor (1931–1935). |
| John Zampieri | Vermont | Democratic | Jan 19, 1941 | 23 years, 353 days | Jan 6, 1965 – Jan 14, 1985 | |
| Serranus Clinton Hastings | Iowa | Democratic | Nov 22, 1814 | 23 years, 355 days | Nov 12, 1838 – Nov 1, 1840 | Later legislative councillor (1840–1846), U.S. representative (1846–1847) and attorney general of California (1852–1854). |
| Jeff Johnston | Oklahoma | Democratic | Jan 16, 1951 | 23 years, 356 days | Jan 7, 1975 – Jan 2, 1979 | Later state senator (1979–1982). |
| Paul Haring | Texas | Democratic | Jan 18, 1937 | 23 years, 358 days | Jan 10, 1961 – Jan 10, 1967 | Later switched to the Republican Party. |
| Blake Carpenter | Kansas | Republican | Jan 14, 1991 | 23 years, 363 days | Jan 12, 2015 – present | Later speaker pro tempore (2023–present). |
| William Van Ness Bay | Missouri | Democratic | Nov 23, 1818 | 23 years, 363 days | Nov 21, 1842 – Dec 25, 1848 | Younger brother of Samuel M. Bay. Later U.S. representative (1849–1851). |
| Robert Robinson | Massachusetts | Democratic | Jan 4, 1889 | 23 years, 363 days | Jan 1, 1913 – Jan 5, 1916 | |
| Avery Anderson | Kansas | Republican | 1997 | 23 years | Jan 11, 2021 – present | |
| Mark S. DeFrancesco | Connecticut | Democratic | Dec 1949 | 23 years | Jan 3, 1973 – Jan 8, 1975 | |
| Jim Donnelly | Maine | Republican | 1967 | 23 years | Dec 5, 1990 – Dec 2, 1998 | |
| Wilfred A. Duquette | Connecticut | Democratic | 1905 | 23 years | Jan 9, 1929 – Jan 7, 1931 | |
| Charles C. Hoskins | Connecticut | Democratic | 1863 | 23 years | Jan 5, 1887 – Jan 9, 1889 | |
| Karen Kilgarin | Nebraska | Democratic | 1957 | 23 years | Jan 7, 1981 – 1984 | At the time the youngest-ever female Nebraska legislator. |
| Maynard J. Kirby | Connecticut | Democratic | 1925 | 23 years | Jan 5, 1949 – Jan 3, 1951 | |
| Albert Phillips | Connecticut | Democratic | 1887 | 23 years | Jan 4, 1911 – Jan 8, 1913 | Later secretary of the state (1913–1915). |
| Francis J. Pizzo | Connecticut | Democratic | 1925 | 23 years | Jan 5, 1949 – Jan 3, 1951 | |
| Vincent A. Roberti | Connecticut | Democratic | 1953 | 23 years | Jan 5, 1977 – Jan 9, 1985 | |
| Jackson Sayama | Hawaii | Democratic | 1997 | 23 years | Nov 3, 2020 – present | |
| Corbin Sullivan | Washington | Democratic | 1911 | 23 years | Jan 14, 1935 – Jan 11, 1937 | |
| Katie Zolnikov | Montana | Republican | 1997 | 23 years | Oct 5, 2020 – present | Appointed following the resignation of her husband Daniel. |
| Philip Ludwell Jr. | Virginia | Independent | 1672 | 23–24 years | 1696 – 1697, 1698 – 1700 | Son of Philip Ludwell. |
| Charles Cotesworth Pinckney | South Carolina | Independent | Feb 25, 1746 | 23–24 years | 1770 – [?] | Son of Charles Pinckney. Later state senator, Federalist nominee for vice president of the United States (1800) and Federalist nominee for president of the United States (1804, 1808). |
| Christopher Robinson | Virginia | Independent | 1681 | 23–24 years | 1705 – 1715 | Son of Christopher Robinson. |
| Joseph Medill Patterson | Illinois | Republican | Jan 6, 1879 | 24 years, 1 day | Jan 7, 1903 – Jan 4, 1905 | Grandson of Joseph Medill. |
| T. Emmet Clarie | Connecticut | Democratic | Jan 1, 1913 | 24 years, 5 days | Jan 6, 1937 – Jan 6, 1943 | |
| John Philip Lanergan | Massachusetts | Democratic | Dec 30, 1874 | 24 years, 5 days | Jan 4, 1899 – Jan 2, 1901 | |
| Phil Cates | Texas | Democratic | Jan 6, 1947 | 24 years, 6 days | Jan 12, 1971 – Jan 9, 1979 | |
| Joe Alexander | New Hampshire | Republican | Nov 28, 1994 | 24 years, 7 days | Dec 5, 2018 – present | |
| Greg Jergeson | Montana | Democratic | Dec 29, 1950 | 24 years, 8 days | Jan 6, 1975 – Jan 5, 1981, Jan 5, 1987 – Jan 6, 2003, Jan 7, 2013 – Jan 2, 2017 | |
| William Christopher Lunney | Massachusetts | Democratic | Dec 24, 1910 | 24 years, 9 days | Jan 2, 1935 – Jan 1, 1947 | |
| James Vernon Lea | Texas | Democratic | Jan 12, 1850 | 24 years, 11 days | Jan 23, 1874 – Apr 18, 1876 | |
| George N. McKendry | Connecticut | Democratic | Dec 25, 1890 | 24 years, 12 days | Jan 6, 1915 – Jan 3, 1917 | |
| Joseph McGrath | Massachusetts | Democratic | Dec 20, 1890 | 24 years, 17 days | Jan 6, 1915 – Jan 1, 1919 | Later Boston City Councilor (1926–1928, 1930–1936), president of the Boston City Council (1931, 1933), chair of the state Democratic Party (1935–1939) and Collector of Customs for the Port of Boston (1938–1943). |
| James B. Adams | Texas | Democratic | Dec 21, 1926 | 24 years, 19 days | Jan 9, 1951 – Aug 6, 1951 | |
| Richard Mentor Johnson | Kentucky | Democratic-Republican | Oct 17, 1780 | 24 years, 20 days | Nov 6, 1804 – Nov 4, 1806, Dec 30, 1841 – Dec 29, 1843 Nov 5, 1850 – Nov 19, 1850 | Later U.S. representative (1807–1819, 1829–1837), U.S. senator (1819–1829) and vice president (1837–1841). Joined the Democratic Party in 1828. |
| Richard Mentor Johnson | Kentucky | Democratic | Oct 17, 1780 | 24 years, 20 days | Nov 6, 1804 – Nov 4, 1806, Dec 30, 1841 – Dec 29, 1843 Nov 5, 1850 – Nov 19, 1850 | Later U.S. representative (1807–1819, 1829–1837), U.S. senator (1819–1829) and vice president (1837–1841). Joined the Democratic Party in 1828. |
| Jim Wright | Texas | Democratic | Dec 22, 1922 | 24 years, 23 days | Jan 14, 1947 – Jan 11, 1949 | Later U.S. representative (1955–1989) and speaker of the U.S. House (1987–1989). |
| Jack Brooks | Texas | Democratic | Dec 18, 1922 | 24 years, 27 days | Jan 14, 1947 – Jan 9, 1951 | Later U.S. representative (1953–1995). |
| Tip O'Neill | Massachusetts | Democratic | Dec 9, 1912 | 24 years, 28 days | Jan 6, 1937 – Jan 7, 1953 | Later speaker of the state House (1949–1953), U.S. representative (1953–1987) and speaker of the U.S. House (1977–1987). |
| Boies Penrose | Pennsylvania | Republican | Nov 1, 1860 | 24 years, 30 days | Dec 1, 1884 – Dec 1, 1886 | Grandson of Charles B. Penrose. Later state senator (1886–1897), state senate president pro tempore (1889–1891), U.S. senator (1897–1921) and chair of the state Republican Party (1903–1905). |
| Cathy Zeuske | Wisconsin | Republican | Dec 4, 1958 | 24 years, 30 days | Jan 3, 1983 – Jan 7, 1991 | Later state treasurer (1991–1995) and secretary of the state department of revenue (1996–2001). |
| Steven Foti | Wisconsin | Republican | Dec 3, 1958 | 24 years, 31 days | Jan 3, 1983 – Jan 3, 2005 | |
| John P. Burke | Massachusetts | Democratic | Dec 2, 1954 | 24 years, 32 days | Jan 3, 1979 – Jan 1, 1991 | |
| James Sturch | Arkansas | Republican | Dec 8, 1990 | 24 years, 35 days | Jan 12, 2015 – Jan 14, 2019 | Later state senator (2019–present) |
| Jesse T. George | Texas | Democratic | Dec 7, 1940 | 24 years, 36 days | Jan 12, 1965 – Sep 5, 1967 | |
| William Hunter | Rhode Island | Federalist | Nov 26, 1774 | 24 years, 36 days | Jan 1, 1799 – 1812, 1823 – 1825 | Later U.S. senator (1811–1821). |
| Jim Lord | Minnesota | Democratic | Nov 26, 1948 | 24 years, 38 days | Jan 3, 1973 – Jan 7, 1975 | Later state treasurer (1975–1983), becoming the youngest-ever Minnesota state constitutional officer. |
| Bill Gardner | New Hampshire | Democratic | Oct 26, 1948 | 24 years, 41 days | Dec 6, 1972 – Dec 1, 1976 | Later state secretary of state (1976–2022). |
| Patrick William Nee | Massachusetts | Democratic | Nov 22, 1938 | 24 years, 41 days | Jan 2, 1963 – Jan 4, 1967 | |
| Linford Fenn Root | Connecticut | Democratic | Nov 22, 1868 | 24 years, 43 days | Jan 4, 1893 – Jan 9, 1895 | |
| Joseph J. Norton | Massachusetts | Democratic | Nov 19, 1870 | 24 years, 44 days | Jan 2, 1895 – Jan 6, 1897 | |
| Amos Percy Scarborough | Texas | Democratic | Nov 27, 1908 | 24 years, 44 days | Jan 10, 1933 – Jan 12, 1937 | |
| Franklin Pierce | New Hampshire | Democratic | Nov 23, 1804 | 24 years, 45 days | Jan 7, 1829 – Jan 2, 1833 | President of the United States (1853–1857). At the time the youngest-ever U.S. president. |
| Emily Virgin | Oklahoma | Democratic | Oct 1, 1986 | 24 years, 47 days | Nov 17, 2010 – Nov 16, 2022 | Later minority leader (2018–2022). |
| Mary Landrieu | Louisiana | Democratic | Nov 23, 1955 | 24 years, 52 days | Jan 14, 1980 – Jan 1988 | Daughter of Moon Landrieu. Later U.S. senator (1997–2015). |
| Lewis Cass | Ohio | Democratic-Republican | Oct 9, 1782 | 24 years, 53 days | Dec 1, 1806 – 1807 | Later governor of the Territory of Michigan (1813–1831), Secretary of War (1831–1836), U.S. senator (1845–1848, 1849–1857), Democratic Party nominee for president of the United States (1848), president pro tempore of the U.S. Senate (1854) and Secretary of State (1857–1860). |
| Laurence M. Keitt | South Carolina | Democratic | Oct 4, 1824 | 24 years, 54 days | Nov 27, 1848 – Mar 3, 1853 | Later U.S. representative (1853–1856, 1856–1860) and member of the Provisional Congress of the Confederate States (1861–1862). |
| Ben Adamowski | Illinois | Democratic | Nov 20, 1906 | 24 years, 55 days | Jan 14, 1931 – Jan 8, 1941 | Later candidate for U.S. senator (1940), candidate for mayor of Chicago (1955) and Republican Party nominee for mayor of Chicago (1963). |
| Theodore A. Glynn | Massachusetts | Democratic | Nov 8, 1881 | 24 years, 56 days | Jan 3, 1906 – Jan 2, 1907 | Later candidate for mayor of Boston (1925). |
| Chuck Schumer | New York | Democratic | Nov 3, 1950 | 24 years, 59 days | Jan 1, 1975 – Dec 31, 1980 | Later U.S. representative (1981–1999) and U.S. senator (1999–present). |
| Robert H. M. Davidson | Florida | Democratic | Sep 23, 1832 | 24 years, 62 days | Nov 24, 1856 – Nov 26, 1860 | Later state senator (1860–1862) and U.S. representative (1877–1891). |
| Otis Theodore Dunagan | Texas | Democratic | Nov 9, 1908 | 24 years, 62 days | Jan 10, 1933 – Jan 12, 1937 | |
| J. Chris Newton | Tennessee | Republican | Nov 9, 1970 | 24 years, 62 days | Jan 10, 1995 – Sep 1, 2005 | |
| Cornelius H. Toland | Massachusetts | Democratic | Nov 2, 1868 | 24 years, 63 days | Jan 4, 1893 – Jan 2, 1895 | |
| C. Frank Hitchcock | Connecticut | Republican | Oct 31, 1924 | 24 years, 66 days | Jan 5, 1949 – Jan 5, 1955 | |
| Margaret Coughlin | Washington | Democratic | Nov 5, 1912 | 24 years, 67 days | Jan 11, 1937 – Jan 9, 1939 | |
| Charles Henry Brown | Connecticut | [?] | Oct 28, 1857 | 24 years, 68 days | Jan 4, 1882 – Jan 3, 1883 | |
| David Berger | Wisconsin | Democratic | Oct 27, 1946 | 24 years, 69 days | Jan 4, 1971 – Jan 6, 1975 | |
| John Gard | Wisconsin | Republican | Aug 3, 1963 | 24 years, 70 days | Oct 12, 1987 – Jan 3, 2007 | Later speaker of the state House (2003–2007). |
| Andy Vargas | Massachusetts | Democratic | Sep 3, 1993 | 24 years, 73 days | Nov 15, 2017 – present | |
| Terry Miller | Alaska | Republican | Nov 10, 1942 | 24 years, 74 days | Jan 23, 1967 – Jan 10, 1977 | |
| Coleman Young II | Michigan | Democratic | Oct 18, 1982 | 24 years, 75 days | Jan 1, 2007 – Jan 1, 2011 | Son of Coleman Young. Later candidate for mayor of Detroit (2009, 2017) and state senator (2011–2019). |
| Conrad Hilton | New Mexico | Republican | Dec 25, 1887 | 24 years, 77 days | Mar 11, 1912 – 1916 | |
| John J. Crittenden | Kentucky | Democratic-Republican | Sep 10, 1787 | 24 years, 83 days | Dec 2, 1811 – 1817 | Later U.S. senator (appointed in 1814, at which point he was too young; served 1817–1819, 1835–1841, 1842–1848, 1855–1861), nominee for Supreme Court justice (1828–1829), U.S. attorney general (1841, 1850–1853), governor (1848–1850) and U.S. representative (1861–1863). |
| Abner Arrasmith | Kansas | Republican | Oct 15, 1844 | 24 years, 88 days | Jan 11, 1869 – Jan 9, 1871 | |
| Gregory Mayhew | Massachusetts | Republican | Sep 19, 1945 | 24 years, 88 days | Dec 16, 1969 – Jan 3, 1973 | Succeeded his deceased father Benjamin [d] in office. |
| Edmund Dinis | Massachusetts | Democratic | Oct 4, 1924 | 24 years, 93 days | Jan 5, 1949 – 1951 | Later state senator (1953–1957). |
| Brian Dempsey | Massachusetts | Democratic | Sep 30, 1966 | 24 years, 94 days | Jan 2, 1991 – July 19, 2017 | |
| Dave Obey | Wisconsin | Democratic | Oct 3, 1938 | 24 years, 96 days | Jan 7, 1963 – Apr 1, 1969 | Later U.S. representative (1969–2011). |
| Patrick Rose | Texas | Democratic | Oct 10, 1978 | 24 years, 96 days | Jan 14, 2003 – Jan 11, 2011 | |
| Lawrence W. Ledvina | Wisconsin | Republican | Sep 28, 1880 | 24 years, 97 days | Jan 3, 1905 – Jan 3, 1911 | |
| John P. McCormally | Kansas | Democratic | Oct 8, 1922 | 24 years, 97 days | Jan 13, 1947 – Jan 10, 1949 | |
| John P. Varda | Wisconsin | Progressive | Oct 1, 1916 | 24 years, 97 days | Jan 6, 1941 – Jan 4, 1943 | |
| Dewey Young | Texas | Democratic | Oct 3, 1898 | 24 years, 98 days | Jan 9, 1923 – Jan 10, 1933 | |
| Stephen McGrail | Massachusetts | Democratic | Sep 23, 1948 | 24 years, 102 days | Jan 3, 1973 – Jan 4, 1977 | |
| Joseph Edward Duffy | Massachusetts | Democratic | Sep 25, 1912 | 24 years, 103 days | Jan 6, 1937 – Jan 4, 1939 Jan 1, 1947 – Jan 5, 1949 | |
| Steven Zirnkilton | Maine | Republican | Aug 18, 1958 | 24 years, 105 days | Dec 1, 1982 – Dec 5, 1988, Dec 2, 1992 – Dec 7, 1994 | |
| William F. Galvin | Massachusetts | Democratic | Sep 17, 1950 | 24 years, 106 days | Jan 1, 1975 – Jan 2, 1991 | Later secretary of the commonwealth (1995–present). |
| Walter Frank Woodul | Texas | Democratic | Sep 25, 1892 | 24 years, 106 days | Jan 9, 1917 – Sep 29, 1917 | Later state senator (1929–1935), state senate president pro tempore (1933) and lieutenant governor (1935–1939). |
| Peter D. Bear | Wisconsin | Democratic | Sep 18, 1952 | 24 years, 107 days | Jan 3, 1977 – Jan 3, 1979 | Later state senator (1979–1981). |
| Charles King | New York | Federalist | Mar 16, 1789 | 24 years, 107 days | Jul 1, 1813 – Jun 30, 1814 | Son of Rufus King. |
| Elisha C. Andrews | New Hampshire | Democratic | Sep 16, 1876 | 24 years, 108 days | Jan 2, 1901 – [?] | |
| Melanie Stambaugh | Washington | Republican | Sep 25, 1990 | 24 years, 109 days | Jan 12, 2015 – Jan 14, 2019 | |
| Zach Brown | Montana | Democratic | Sep 18, 1990 | 24 years, 110 days | Jan 6, 2015 – Jan 4, 2021 | |
| Ed Kacir | Texas | Democratic | Sep 23, 1896 | 24 years, 110 days | Jan 11, 1921 – Jan 9, 1923 | |
| William G. Arvanitis | Massachusetts | Republican | Sep 16, 1946 | 24 years, 112 days | Jan 6, 1971 – Jan 3, 1973 | |
| John W. Hartmann | New Jersey | Republican | Sep 22, 1967 | 24 years, 114 days | Jan 14, 1992 – Jan 11, 1994 | |
| Grant Harrison Shaft | North Dakota | Republican | Aug 9, 1962 | 24 years, 114 days | Dec 1, 1986 – Dec 1, 1990 | |
| John J. Gilbride | Massachusetts | Democratic | Sep 14, 1889 | 24 years, 115 days | Jan 7, 1914 – Jan 5, 1916 | |
| J. Herman Tubbs | Connecticut | Republican | Sep 14, 1859 | 24 years, 117 days | Jan 9, 1884 – Jan 7, 1885 | |
| David S. Day | Connecticut | Republican | Sep 8, 1880 | 24 years, 118 days | Jan 4, 1905 – Jan 9, 1907 | |
| Bill Keating | Massachusetts | Democratic | Sep 6, 1952 | 24 years, 119 days | Jan 3, 1977 – Jan 3, 1985 | Later state senator (1985–1999) and U.S. representative (2011–present). |
| Cynthia Lummis | Wyoming | Republican | Sep 10, 1954 | 24 years, 120 days | Jan 8, 1979 – Jan 3, 1983, Jan 7, 1985 – Jan 14, 1993 | Later state senator (1993–1995), state treasurer (1999–2007), U.S. representative (2009–2017) and U.S. senator (2021–present). |
| Isaac Kinsey Wilson | Iowa | Republican | Sep 12, 1867 | 24 years, 121 days | Jan 11, 1892 – Jan 7, 1894 | |
| Melvin Laird | Wisconsin | Republican | Sep 1, 1922 | 24 years, 122 days | Jan 1, 1947 – Jan 1, 1953 | Succeeded his deceased father in office, becoming the youngest-ever Wisconsin state senator. Later U.S. representative (1953–1969), U.S. secretary of defense (1969–1973) and White House domestic affairs advisor (1973–1974). |
| Bruce E. Wetherbee | Massachusetts | Democratic | Sep 1, 1950 | 24 years, 122 days | Jan 1, 1975 – Jan 1, 1985 | |
| Edward Johnstone | Iowa | Democratic | Jul 4, 1815 | 24 years, 123 days | Nov 4, 1839 – Nov 1, 1840 | Later territorial councilor (1840–1842). |
| Dave Norman Vigneault | Massachusetts | Democratic | Sep 3, 1936 | 24 years, 123 days | Jan 4, 1961 – Jan 6, 1971 | |
| Martin Sennet Conner | Mississippi | Democratic | Aug 31, 1891 | 24 years, 126 days | Jan 4, 1916 – Jan 1924 | Later governor (1932–1936) |
| Thomas P. White | Massachusetts | Democratic | Aug 27, 1950 | 24 years, 127 days | Jan 1, 1975 – Jan 6, 1987 | Later state senator (1987–1991). |
| Benjamin F. Williamson | Arkansas | Democratic | Sep 5, 1856 | 24 years, 127 days | Jan 10, 1881 – [?] | |
| Martin Thomas Reilly | Massachusetts | Democratic | Sep 1, 1956 | 24 years, 128 days | Jan 7, 1981 – Jan 4, 1989 | |
| Joseph P. Cooney | Connecticut | Democratic | Aug 30, 1906 | 24 years, 130 days | Jan 7, 1931 – Jan 9, 1935, Jan 6, 1937 – Jan 6, 1943 | |
| Alisha Thomas Morgan | Georgia | Democratic | Sep 5, 1978 | 24 years, 130 days | Jan 13, 2003 – Jan 12, 2015 | |
| Bill Tippen | Texas | Democratic | Sep 6, 1922 | 24 years, 130 days | Jan 14, 1947 – Jan 9, 1951 | Later state senator (1972–1973). |
| Mark Clodfelter | Michigan | Democratic | Aug 23, 1950 | 24 years, 131 days | Jan 1, 1975 – 1980 | |
| Justin Simmons | Pennsylvania | Republican | Aug 26, 1986 | 24 years, 131 days | Jan 4, 2011 – Jan 5, 2021 | |
| Anesa Kajtazović | Iowa | Democratic | Aug 30, 1986 | 24 years, 133 days | Jan 10, 2011 – Jan 11, 2015 | |
| Joe Fitzgibbon | Washington | Democratic | Aug 27, 1986 | 24 years, 136 days | Jan 10, 2011 – present | |
| Shane Broadway | Arkansas | Democratic | Aug 30, 1972 | 24 years, 136 days | Jan 13, 1997 – Jan 13, 2003 | Later speaker of the state House (2001–2003; youngest-ever speaker of the Arkansas House), state senator (2003–2011) and nominee for lieutenant governor (2010). |
| Herman M. Albert | New York | Democratic | Aug 15, 1901 | 24 years, 139 days | Jan 1, 1926 – Dec 31, 1933 | |
| Edward M. Day | Connecticut | Republican | Aug 20, 1872 | 24 years, 139 days | Jan 6, 1897 – Jan 4, 1899 | |
| Byron C. Ostby | Wisconsin | Republican | Aug 17, 1924 | 24 years, 139 days | Jan 3, 1949 – Jan 3, 1951 | |
| Gary W. Laidig | Minnesota | Republican | Aug 15, 1948 | 24 years, 140 days | Jan 2, 1973 – Jan 3, 1983 | Later state senator (1983–2001). |
| George Peddy | Texas | Democratic | Aug 22, 1892 | 24 years, 140 days | Jan 9, 1917 – Sep 10, 1917 | Later candidate for U.S. senator (1922, 1948). |
| Kurt Zwikl | Pennsylvania | Democratic | Jun 28, 1949 | 24 years, 140 days | Nov 15, 1973 – Nov 30, 1984 | |
| Truett Latimer | Texas | Democratic | Aug 23, 1928 | 24 years, 143 days | Jan 13, 1953 – Jan 8, 1963 | |
| Earl Blumenauer | Oregon | Democratic | Aug 16, 1948 | 24 years, 145 days | Jan 8, 1973 – Jan 1, 1979 | Later U.S. representative (1996–present). |
| Darrell Hanson | Iowa | Republican | Aug 8, 1954 | 24 years, 146 days | Jan 1, 1979 – Jan 1, 1995 | |
| Fred B. Balzar | Nevada | Republican | Jun 15, 1880 | 24 years, 147 days | Nov 9, 1904 – Nov 7, 1906 | Later state senator (1908–1916), state senate president pro tempore (1915), chairman of the state Republican Party (1924–1925) and governor (1927–1934). |
| J. C. W. Beckham | Kentucky | Democratic | Aug 5, 1869 | 24 years, 149 days | Jan 1, 1894 – Jan 1, 1898 | Grandson of Charles A. Wickliffe and nephew of Robert C. Wickliffe. Became the youngest-ever Kentucky state legislator. Later lieutenant governor (1900), governor (1900–1907) and U.S. senator (1915–1921). |
| Alonzo Sledge | Texas | Republican | Aug 15, 1854 | 24 years, 152 days | Jan 14, 1879 – Jan 11, 1881 | |
| John L. Helm | Kentucky | Whig | Jul 4, 1802 | 24 years, 153 days | Dec 4, 1826 – Dec 31, 1844 | Later state senator (1844–1848), lieutenant governor (1848–1850) and governor (1850–1851, 1867). |
| Khaleel Anderson | New York | Democratic | Jun 11, 1996 | 24 years, 154 days | Nov 12, 2020 – present | |
| Mazzie Christensen | Missouri | Republican | Aug 3, 1998 | 24 years, 154 days | Jan 4, 2023 – present | |
| Frank Foster | Michigan | Republican | Jul 31, 1986 | 24 years, 154 days | Jan 1, 2011 – Jan 1, 2015 | |
| Temple Lea Houston | Texas | Democratic | Aug 12, 1860 | 24 years, 154 days | Jan 13, 1885 – 1889 | Youngest-ever Texas state senator. Son of Sam Houston. |
| Jim Slattery | Kansas | Democratic | Aug 4, 1948 | 24 years, 157 days | Jan 8, 1973 – Jan 8, 1979 | Later U.S. representative (1983–1995). |
| Romaine Quinn | Wisconsin | Republican | Jul 30, 1990 | 24 years, 157 days | Jan 3, 2015 – Jan 4, 2021 | Priorly mayor of Rice Lake (2010–2012). Later state senator (2023–present). |
| Robert F. Murray | Washington | Democratic | Aug 8, 1910 | 24 years, 159 days | Jan 14, 1935 – Jan 11, 1937 | |
| David Nelson | Alaska | Republican | Aug 13, 1996 | 24 years, 159 days | Jan 19, 2021 – present | |
| Daniel Elliott Huger | South Carolina | [?] | Jun 28, 1779 | 24 years, 160 days | Dec 5, 1803 – Nov 27, 1820, Nov 22, 1830 – Nov 26, 1832 | Son of Daniel Huger and son-in-law of Arthur Middleton. Later state senator (1838–1842) and U.S. senator (1843–1845). Switched to the Democratic Party. |
| Jervis D. Brown Jr. | Connecticut | Republican | Jul 29, 1890 | 24 years, 161 days | Jan 6, 1915 – Jan 8, 1919 | |
| Thurman P. Maine | Connecticut | Democratic | Jul 30, 1888 | 24 years, 162 days | Jan 8, 1913 – Jan 6, 1915 | |
| Timothy Sullivan | New York | Democratic | Jul 23, 1862 | 24 years, 162 days | Jan 1, 1887 – Dec 31, 1893 | Later state senator (1894–1902, 1909–1912) and U.S. representative (1903–1906, 1913). |
| Maurice R. Flynn | Massachusetts | Democratic | Jul 28, 1889 | 24 years, 163 days | Jan 7, 1914 – Jan 5, 1916 | |
| Kathleen A. Blatz | Minnesota | Republican | Jul 22, 1954 | 24 years, 165 days | Jan 3, 1979 – Jan 24, 1994 | Youngest-ever female Minnesota state legislator. Daughter of state senator Jerome Blatz. |
| Denny Heck | Washington | Democratic | Jul 29, 1952 | 24 years, 165 days | Jan 10, 1977 – Jan 14, 1985 | Later U.S. representative (2013–2021) and lieutenant governor (2021–present). |
| Thomas J. Henley | Indiana | Democratic | Jun 18, 1808 | 24 years, 170 days | Dec 5, 1832 – Dec 4, 1843 | Later speaker of the state House (1842–1843), U.S. representative (1843–1849) and California state representative (1851–1853). |
| Morgan G. Sanders | Texas | Democratic | Jul 14, 1878 | 24 years, 183 days | Jan 13, 1903 – Jan 8, 1907 | Later U.S. representative (1921–1939). |
| Corey Parent | Vermont | Republican | Jul 8, 1990 | 24 years, 183 days | Jan 7, 2015 – Jan 9, 2019 | Later state senator (2019–2023). |
| Woodville Jefferson Rogers | Texas | Democratic | Jul 13, 1890 | 24 years, 183 days | Jan 12, 1915 – Oct 31, 1917 | Later state senator (1921–1925) and state senate president pro tempore (1923). |
| Rebecca White | Vermont | Democratic | Jul 9, 1994 | 24 years, 184 days | Jan 9, 2019 – Jan 4, 2023 | Later state senator (2023–present) |
| Frank B. Brandegee | Connecticut | Republican | Jul 8, 1864 | 24 years, 185 days | Jan 9, 1889 – Jan 7, 1891, Jan 4, 1899 – Jan 9, 1901 | |
| Ryan W. Pearson | Rhode Island | Democratic | Jun 30, 1988 | 24 years, 185 days | Jan 1, 2013 – present | Later majority leader (2023–present). |
| Ingolf E. Rasmus | Wisconsin | Republican | Jul 4, 1906 | 24 years, 185 days | Jan 5, 1931 – Jan 3, 1933 | |
| Adam Scanlon | Massachusetts | Democratic | Jul 5, 1996 | 24 years, 185 days | Jan 6, 2021 – present | |
| Edwin W. Higgins | Connecticut | Republican | Jul 2, 1874 | 24 years, 186 days | Jan 4, 1899 – Jan 9, 1901 | Later U.S. representative (1905–1913). |
| Beau LaFave | Michigan | Republican | Jun 27, 1992 | 24 years, 188 days | Jan 1, 2017 – Jan 1, 2023 | Later candidate for state secretary of state (2022). |
| E. Ray Kirkpatrick | Texas | Democratic | Jul 9, 1922 | 24 years, 189 days | Jan 14, 1947 – Jan 13, 1953 | |
| William Knowland | California | Republican | Jun 26, 1908 | 24 years, 190 days | Jan 2, 1933 – Jan 7, 1935 | Son of Joseph R. Knowland. Later state senator (1935–1939), U.S. senator (1945–1959) and nominee for governor (1958). |
| Arthur L. Peterson | Wisconsin | Republican | Jun 27, 1926 | 24 years, 190 days | Jan 3, 1951 – Jan 3, 1955 | Later Montana state representative (2001–2003). |
| Charles S. Sullivan | Massachusetts | Democratic | Jun 26, 1875 | 24 years, 191 days | Jan 3, 1900 – Jan 1, 1902 | Later state senator (1902–1903, 1904–1905). |
| Zebulon Baird Vance | North Carolina | Whig | May 13, 1830 | 24 years, 191 days | Nov 20, 1854 – Nov 17, 1856 | Later U.S. representative (1858–1861), governor (1862–1865, 1877–1879) and U.S. senator (1879–1894). |
| Lewis Miles | Iowa | Republican | Jun 30, 1845 | 24 years, 194 days | Jan 10, 1870 – Jan 7, 1872 | Later state senator (1884–1888). |
| Silas D. Reed | Massachusetts | Republican | Jun 25, 1872 | 24 years, 195 days | Jan 6, 1897 – Jan 7, 1903 | Later state senator (1905–1907, 1918–1923). |
| William E. Weeks | Massachusetts | Republican | Jun 23, 1880 | 24 years, 195 days | Jan 4, 1905 – Jan 5, 1910, Jan 5, 1916 – Jan 3, 1917 | Later mayor of Everett (1918–1919). |
| Frank A. Manning | Massachusetts | Democratic | Jun 25, 1889 | 24 years, 196 days | Jan 7, 1914 – Jan 5, 1921 | |
| Dennis M. O'Brien | Pennsylvania | Republican | Jun 22, 1952 | 24 years, 196 days | Jan 4, 1977 – Nov 30, 1980, Jan 5, 1983 – Jan 2, 2012 | Later speaker of the state House (2007–2008). |
| Leah Cole Allen | Massachusetts | Republican | Oct 15, 1988 | 24 years, 198 days | May 1, 2013 – Sep 28, 2015 | Later nominee for lieutenant governor (2022). |
| Thomas E. Flaherty | Pennsylvania | Democratic | Jun 18, 1950 | 24 years, 199 days | Jan 3, 1975 – Jan 2, 1979 | Later member of the Pittsburgh City Council (1980–1984), city controller (1984–2006) and chair of the Allegheny County Democratic Party (2002–2005). |
| Dirk Deaton | Missouri | Republican | Jun 14, 1994 | 24 years, 205 days | Jan 5, 2019 – present | Second youngest ever Missouri state representative. |
| John Vinich | Wyoming | Democratic | Jun 13, 1950 | 24 years, 207 days | Jan 6, 1975 – Jan 3, 1983 | Later state senator (1983–1999) and nominee for U.S. senator (1988) and for governor (1998). |
| Charles A. Wickliffe | Kentucky | Democratic-Republican | Jun 8, 1788 | 24 years, 207 days | Jan 1, 1813 – Jan 1, 1815 | Later U.S. representative (1823–1833, 1861–1863), lieutenant governor (1836–1839), acting governor (1839–1840) and U.S. postmaster general (1841–1845). |
| William Laird McCormick | Wisconsin | Republican | Jun 12, 1876 | 24 years, 209 days | Jan 7, 1901 – Jan 5, 1903 | |
| Mack McLarty | Arkansas | Democratic | Jun 14, 1946 | 24 years, 210 days | Jan 10, 1971 – Jan 8, 1973 | Later chair of the state Democratic Party (1974–1976), White House chief of staff (1993–1994) and counselor to the president (1994–1998). |
| Robert Xavier Tivnan | Massachusetts | Democratic | Jun 9, 1924 | 24 years, 210 days | Jan 5, 1949 – Jan 7, 1959 | |
| George J. Wall | Massachusetts | Democratic | Jun 11, 1889 | 24 years, 210 days | Jan 7, 1914 – Jan 3, 1917 | |
| William Cabell Rives | Virginia | [?] | May 4, 1793 | 24 years, 211 days | Dec 1, 1817 – Dec 4, 1820, Dec 2, 1822 – Dec 1, 1823 | Later U.S. representative (1823–1829), U.S. senator (1832–1834, 1836–1839, 1841–1845) and Confederate States representative (1864–1865). |
| Lorne R. Worthington | Iowa | Democratic | Jun 14, 1938 | 24 years, 214 days | Jan 14, 1963 – Jan 10, 1965 | Later state auditor (1965–1967) and insurance commissioner (1967–1971). |
| Richard Varn | Iowa | Democratic | May 31, 1958 | 24 years, 215 days | Jan 1, 1983 – Feb 2, 1994 | |
| Alvin M. Owsley | Texas | Democratic | Jun 11, 1888 | 24 years, 217 days | Jan 14, 1913 – Jan 12, 1915 | Son of Alvin Clark Owsley. Later candidate for U.S. senator (1928). |
| James L. Callan | Wisconsin | Democratic | Jun 3, 1910 | 24 years, 220 days | Jan 9, 1935 – Jan 4, 1939 | |
| Andy Welti | Minnesota | Democratic | May 28, 1980 | 24 years, 221 days | Jan 4, 2005 – Jan 3, 2011 | |
| Edmund L. Pitts | New York | Republican | May 23, 1839 | 24 years, 223 days | Jan 1, 1864 – Dec 31, 1868 | Later speaker of the state House (1867), state senator (1880–1883, 1886–1887) and state senate president pro tempore (1886–1887). |
| Aaron M. I. Shinberg | Massachusetts | Democratic | May 27, 1940 | 24 years, 224 days | Jan 6, 1965 – Jan 1, 1969 | |
| Peter V. Daniel | Virginia | [?] | Apr 24, 1784 | 24 years, 225 days | Dec 5, 1808 – Dec 3, 1810 | Later associate justice of the Supreme Court (1842–1860). |
| Owen A. Gallagher | Massachusetts | Democratic | May 24, 1902 | 24 years, 226 days | Jan 5, 1927 – Jan 4, 1933 | Son of Daniel J. Gallagher. Later state senator (1933–1935). |
| John Y. Mason | Kentucky | [?] | Apr 18, 1799 | 24 years, 227 days | Dec 1, 1823 – 1827 | Later state senator (1827–1831), U.S. representative (1831–1837), secretary of the navy (1844–1845, 1846–1849) and attorney general (1845–1846). |
| John R. McKernan Jr. | Maine | Republican | May 20, 1948 | 24 years, 228 days | Jan 3, 1973 – Jan 5, 1977 | Later U.S. representative (1983–1987) and governor (1987–1995). |
| Loring M. Black Jr. | New York | Democratic | May 17, 1886 | 24 years, 229 days | Jan 1, 1911 – Dec 31, 1912, Jan 1, 1919 – Dec 31, 1920 | Later U.S. representative (1923–1935). |
| Charles O. Engstrom | Massachusetts | Republican | May 19, 1875 | 24 years, 229 days | Jan 3, 1900 – Jan 2, 1901 | |
| Cathy McMorris Rodgers | Washington | Republican | May 22, 1969 | 24 years, 230 days | Jan 7, 1994 – Jan 3, 2005 | Later U.S. representative (2005–present). |
| Anthony Michael Gallugi | Massachusetts | Democratic | May 16, 1948 | 24 years, 232 days | Jan 3, 1973 – Jan 3, 1979 | |
| Jeremiah Haralson | Alabama | Republican | Apr 1, 1846 | 24 years, 234 days | Nov 21, 1870 – Nov 18, 1872 | Later state senator (1872–1875) and U.S. representative (1875–1877). |
| Frank T. Caprio | Rhode Island | Democratic | May 10, 1966 | 24 years, 236 days | Jan 1, 1991 – Jan 3, 1995 | Son of Frank Caprio. Later state senator (1995–2007), state treasurer (2007–2011) and nominee for governor (2010). |
| Leo Giacometto | Montana | Republican | May 14, 1962 | 24 years, 236 days | Jan 5, 1987 – 1990 | Later director of the state department of agriculture (1993–1995). |
| Joseph Martin | Wisconsin | Democratic | May 12, 1878 | 24 years, 238 days | Jan 5, 1903 – Jan 3, 1905 | |
| Bartholomew A. Brickley | Massachusetts | Democratic | May 7, 1883 | 24 years, 239 days | Jan 1, 1908 – Jan 5, 1910 | |
| Charles P. Lyman | Connecticut | Democratic | May 9, 1858 | 24 years, 239 days | Jan 3, 1883 – Jan 7, 1885 | |
| Murray Watson Jr. | Texas | Democratic | May 14, 1932 | 24 years, 239 days | Jan 8, 1957 – Jan 8, 1963 | Later state senator (1963–1973). |
| Edward A. Edmonds | Wisconsin | Democratic | May 2, 1868 | 24 years, 246 days | Jan 3, 1893 – Jan 7, 1895 | |
| H. Joel Deckard | Indiana | Republican | Mar 7, 1942 | 24 years, 247 days | Nov 9, 1966 – Nov 6, 1974 | Later U.S. representative (1979–1983) and Reform Party nominee for U.S. senator from Florida (2000). |
| Stephen Van Rensselaer | New York | Federalist | Nov 1, 1764 | 24 years, 247 days | Jul 6, 1789 – Jan 5, 1791 | Later state senator (1791–1796), lieutenant governor (1795–1801), nominee for governor (1801, 1813) and U.S. representative (1822–1829). |
| Norman Knudson | Wisconsin | Republican | Apr 30, 1874 | 24 years, 248 days | Jan 3, 1899 – Jan 5, 1903 | |
| Henry H. Lyman | Connecticut | Republican | May 4, 1888 | 24 years, 249 days | Jan 8, 1913 – Jan 6, 1915 | Later state senator (1915–1919). |
| Grant Hodges | Arkansas | Republican | May 7, 1990 | 24 years, 250 days | Jan 12, 2015 – Jul 10, 2020, Jan 9, 2023 – present | |
| Paul F. Malloy | Massachusetts | Democratic | Apr 29, 1940 | 24 years, 252 days | Jan 6, 1965 – Jan 3, 1973 | |
| Joseph Story | Massachusetts | Democratic-Republican | Sep 18, 1779 | 25 years, 253 days | May 29, 1805 – May 26, 1807 | Later U.S. representative (1808–1809) and Supreme Court justice (1812–1845). |
| H. Edward Snow | Massachusetts | Republican | Apr 25, 1914 | 24 years, 254 days | Jan 4, 1939 – Jan 2, 1945, Jan 1, 1947 – Jan 4, 1955 | |
| Charles S. Tuttle | Connecticut | Republican | Apr 28, 1860 | 24 years, 254 days | Jan 7, 1885 – Jan 5, 1887 | |
| Chuck Espy | Mississippi | Democratic | Apr 24, 1975 | 24 years, 255 days | Jan 4, 2000 – Jan 5, 2016 | Son of Henry Espy and nephew of Mike Espy. Later mayor of Clarksdale (2017–present). |
| John N. Wozniak | Pennsylvania | Democratic | Mar 21, 1956 | 24 years, 255 days | Dec 1, 1980 – Dec 1, 1996 | Later state senator (1996–2016). |
| James Langevin | Rhode Island | Democratic | Apr 22, 1964 | 24 years, 256 days | Jan 3, 1989 – Jan 3, 1995 | Later state secretary of state (1995–2001) and U.S. representative (2001–2023). |
| Hamilton Fish II | New York | Republican | Apr 17, 1849 | 24 years, 259 days | Jan 1, 1874 – Dec 31, 1874, Jan 1, 1876 – Dec 31, 1879, Jan 1, 1889 – Dec 31, 1896 | Son of Hamilton Fish. Later speaker of the state House (1895–1896) and U.S. representative (1909–1911). |
| Marty Seifert | Minnesota | Republican | Apr 23, 1972 | 24 years, 259 days | Jan 7, 1997 – Jan 3, 2011 | |
| Park Cannon | Georgia | Democratic | Jun 6, 1991 | 24 years, 261 days | Feb 22, 2016 – present | |
| John Pierce Lynch | Massachusetts | Democratic | Apr 19, 1924 | 24 years, 261 days | Jan 5, 1949 – Jan 7, 1953 | |
| Michael Cormack | Iowa | Republican | Apr 22, 1970 | 24 years, 262 days | Jan 9, 1995 – Jan 12, 2003 | |
| Romulus Mitchell Saunders | North Carolina | Democratic-Republican | Mar 3, 1791 | 24 years, 262 days | Nov 20, 1815 – Dec 21, 1815, Nov 17, 1817 – Dec 25, 1820, Nov 20, 1848 – Dec 27, 1852 | Later state senator (1816), speaker of the state House (1819–1820), U.S. representative (1821–1827, 1841–1845), and state attorney general (1828–1834). |
| Romulus Mitchell Saunders | North Carolina | Democratic | Mar 3, 1791 | 24 years, 262 days | Nov 20, 1815 – Dec 21, 1815, Nov 17, 1817 – Dec 25, 1820, Nov 20, 1848 – Dec 27, 1852 | Later state senator (1816), speaker of the state House (1819–1820), U.S. representative (1821–1827, 1841–1845), and state attorney general (1828–1834). |
| Marcus Gaspard | Washington | Democratic | Apr 19, 1948 | 24 years, 264 days | Jan 8, 1973 – Jan 10, 1977 | Later state senator (1977–1995). |
| Tyson Larson | Nebraska | Republican | Apr 16, 1986 | 24 years, 264 days | Jan 5, 2011 – Jan 9, 2019 | |
| David Lucas | Georgia | Democratic | Apr 23, 1950 | 24 years, 265 days | Jan 13, 1975 – Jul 1, 2011 | Later state senator (2013–present). |
| Samuel J. Crawford | Kansas | Republican | Apr 10, 1835 | 24 years, 267 days | Jan 2, 1860 – 1861 | Later governor (1865–1868). |
| Thomas W. Nevin | Colorado | Democratic | Feb 11, 1910 | 24 years, 269 days | Nov 7, 1934 – Nov 9, 1936 | Since Nevin was only 24 years old, his swearing-in was in violation of the state constitution's age requirement of 25 years. |
| Alexander H. Stephens | Georgia | Whig | Feb 11, 1812 | 24 years, 270 days | Nov 7, 1836 – Dec 9, 1841 | Later state senator (1842), U.S. representative (1843–1859, 1873–1882), member of the Provisional Congress of the Confederate States (1861–1862), vice president of the Confederate States (1862–1865) and governor of Georgia (1882–1883). |
| Ernest Keppler | Wisconsin | Republican | Apr 5, 1918 | 24 years, 274 days | Jan 4, 1943 – Jan 3, 1945 | |
| Kenneth J. DeBeaussaert | Michigan | Democratic | Apr 10, 1954 | 24 years, 275 days | Jan 10, 1979 – Jan 1981, Jan 12, 1983 – Jan 1985, Jan 14, 1987 – Jan 1993 | Later state senator (1995–2003). |
| Chuck Larson | Iowa | Republican | Apr 1, 1968 | 24 years, 275 days | Jan 1, 1993 – Jan 1, 2003 | Later state senator (2003–2007). |
| A. P. Barrett | Texas | Democratic | Apr 12, 1878 | 24 years, 276 days | Jan 13, 1903 – Jan 10, 1905 | Later state senator (1905–1909) and state senate president pro tempore (1907). |
| John E. Clark | Maryland | Democratic | Apr 1, 1910 | 24 years, 276 days | Jan 2, 1935 – 1947 | |
| Carl M. Iverson | Minnesota | Independent | Apr 6, 1894 | 24 years, 276 days | Jan 7, 1919 – Jan 5, 1931 Jan 3, 1939 – Jan 2, 1967 | Later state senator (1931–1935). |
| Emily Cain | Maine | Democratic | Mar 29, 1980 | 24 years, 278 days | Jan 1, 2005 – Dec 5, 2012 | Later minority leader (2010–2012), state senator (2012–2014) and executive director of EMILY's List (2017–present). |
| David Patterson Dyer | Missouri | Republican | Feb 12, 1838 | 24 years, 278 days | Nov 17, 1862 – Nov 19, 1866 | Later U.S. representative (1869–1871) and nominee for governor (1880). |
| Don Wesely | Nebraska | Democratic | Mar 30, 1954 | 24 years, 279 days | Jan 3, 1979 – Jan 1999 | At the time the third youngest ever Nebraska state legislator, and at his retirement the eighth-longest serving legislator in state history. Later mayor of Lincoln (1999–2003). |
| Oscar J. Schmiege | Wisconsin | Republican | Mar 29, 1902 | 24 years, 280 days | Jan 3, 1927 – Jan 3, 1933 | |
| Phil Foster | Georgia | Democratic | Apr 4, 1958 | 24 years, 281 days | Jan 10, 1983 – Jan 14, 1991 | Son of R. L. Foster. |
| Joe Schomacker | Minnesota | Republican | Mar 25, 1986 | 24 years, 284 days | Jan 3, 2011 – present | |
| Spencer Igo | Minnesota | Republican | Mar 26, 1996 | 24 years, 285 days | Jan 5, 2021 – present | |
| Stephen W. Doran | Massachusetts | Democratic | Mar 26, 1956 | 24 years, 287 days | Jan 7, 1981 – Jan 4, 1995 | |
| Marcus Harvey Townsend | Texas | Democratic | Mar 26, 1858 | 24 years, 289 days | Jan 9, 1883 – Jan 13, 1885, Jan 8, 1889 – Jan 10, 1893 | |
| Henry Chamberlain | Michigan | Democratic | Mar 17, 1824 | 24 years, 290 days | Jan 1, 1849 – Apr 2, 1849 | Later nominee for governor (1874). |
| Daniel T. McCarty | Florida | Democratic | Jan 18, 1912 | 24 years, 290 days | Nov 3, 1936 – Nov 3, 1942 | Later speaker of the state House (1941–1943) and governor (1953). |
| Joe Crowley | New York | Democratic | March 16, 1962 | 24 years, 291 days | Jan 1, 1987 – Dec 31, 1998 | Later U.S. representative (1999–2019). |
| James W. Husted | New York | Republican | Mar 16, 1870 | 24 years, 291 days | Jan 1, 1895 – Dec 31, 1897 | Son of James W. Husted. Later U.S. representative (1915–1923). |
| Luke F. Cozans | New York | Democratic | Mar 15, 1836 | 24 years, 292 days | Jan 1, 1861 – Dec 31, 1861, Jan 1, 1877 – Dec 31, 1877 | Later state senator (1864–1865). |
| Dan Gwadosky | Maine | Democratic | Feb 16, 1954 | 24 years, 293 days | Dec 6, 1978 – 1996 | Later state secretary of state (1997–2005). |
| Arne H. Wicklund | Wisconsin | Democratic | Mar 13, 1926 | 24 years, 296 days | Jan 3, 1951 – Jan 5, 1955 | |
| John L. Buckley | New York | Democratic | Mar 9, 1900 | 24 years, 298 days | Jan 1, 1925 – Dec 31, 1926 | Later state senator (1927–1942). |
| Milton A. Candler | Georgia | Democratic | Jan 11, 1837 | 24 years, 299 days | Nov 6, 1861 – Nov 4, 1863 | Son of Samuel Charles Candler. Later state senator (1868–1872) and U.S. representative (1875–1879). |
| William G. Giaccio | New York | Democratic | Mar 8, 1924 | 24 years, 299 days | Jan 1, 1949 – Dec 31, 1962 | |
| Thomas V. Murray | New Hampshire | Democratic | Mar 8, 1876 | 24 years, 300 days | Jan 2, 1901 – [?] | |
| James G. Birney | Kentucky | Democratic-Republican | Feb 4, 1792 | 24 years, 302 days | Dec 2, 1816 – Feb 5, 1817 | Later Alabama state representative (1819–1820) and Liberty Party nominee for vice president of the United States (1840, 1844). |
| Daniel Fischer | Wisconsin | Democratic | Mar 4, 1952 | 24 years, 305 days | Jan 3, 1977 – Jan 3, 1979 | |
| Ryan Kiesel | Oklahoma | Democratic | Jan 15, 1980 | 24 years, 307 days | Nov 17, 2004 – Nov 17, 2010 | |
| Dave L. Reed | Pennsylvania | Republican | Mar 6, 1978 | 24 years, 307 days | Jan 7, 2003 – Nov 30, 2018 | Later majority leader (2015–2018). |
| Lee Cate | Oklahoma | Democratic | Jan 18, 1942 | 24 years, 309 days | Nov 23, 1966 – Oct 17, 1973 | Later state senator (1973–1986). |
| William L. V. Newton | Massachusetts | Democratic | Feb 28, 1881 | 24 years, 309 days | Jan 3, 1906 – Jan 1, 1908, Jan 4, 1911 – Jan 3, 1912 | |
| Malcolm Wilson | New York | Republican | Feb 26, 1914 | 24 years, 309 days | Jan 1, 1939 – Dec 31, 1958 | Later lieutenant governor (1959–1973) and governor (1973–1974). |
| Theodore A. Glynn Jr. | Massachusetts | Democratic | Feb 26, 1916 | 24 years, 310 days | Jan 1, 1941 – Jan 6, 1943 | Son of Theodore A. Glynn. |
| George M. O'Connor | Wisconsin | Republican | Feb 27, 1902 | 24 years, 310 days | Jan 3, 1927 – Jan 4, 1933 | |
| James A. Barcia | Michigan | Democratic | Feb 25, 1952 | 24 years, 311 days | Jan 1, 1977 – Dec 31, 1982 | Later state senator (1983–1992, 2003–2010), U.S. representative (1993–2003) and Bay County Executive (2017–present). |
| Howard Doherty | Washington | Democratic | Mar 6, 1912 | 24 years, 311 days | Jan 11, 1937 – Jan 9, 1939, Jan 13, 1941 – Jan 11, 1943 | |
| Frank L. Rodgers | Connecticut | Republican | Feb 26, 1858 | 24 years, 311 days | Jan 3, 1883 – Jan 9, 1884 | |
| Alexander Contee Hanson | Maryland | Federalist | Feb 27, 1786 | 24 years, 316 days | Jan 9, 1811 – 1815 | Son of Alexander Contee Hanson Sr. and grandson of John Hanson. Later U.S. representative (1813–1816) and U.S. senator (1816–1819). |
| Webster Ballinger | Iowa | Democratic | Feb 25, 1841 | 24 years, 317 days | Jan 8, 1866 – Jan 12, 1868, Jan 8, 1872 – Jan 11, 1874 | |
| Dennis Bonnen | Texas | Republican | Mar 3, 1972 | 24 years, 317 days | Jan 14, 1997 – Jan 12, 2021 | Later speaker pro tempore (2013–2019) and speaker of the state House (2019–2021). |
| Joseph J. Kelley | Massachusetts | Democratic | Feb 22, 1868 | 24 years, 317 days | Jan 4, 1893 – Jan 2, 1895 | |
| Frank Owen III | Texas | Democratic | Feb 25, 1926 | 24 years, 318 days | Jan 9, 1951 – Nov 5, 1954 | Later state senator (1954–1965) and state senate president pro tempore (1959–1961). |
| William F. Winter | Mississippi | Democratic | Feb 21, 1923 | 24 years, 319 days | Jan 6, 1948 – Jan 3, 1956 | Later lieutenant governor (1972–1976), governor (1980–1984) and nominee for U.S senator (1984). |
| Joseph Wenceslaus Bartunek | Ohio | Democratic | Feb 16, 1924 | 24 years, 320 days | Jan 1, 1949 – 1958 1959–1964 | Later minority leader (1951–1958). |
| Elmer Baumann | Wisconsin | Socialist | Feb 15, 1902 | 24 years, 322 days | Jan 3, 1927 – Jan 7, 1929 | |
| Tim Hickey | Massachusetts | Democratic | Feb 14, 1938 | 24 years, 322 days | Jan 2, 1963 – Jan 3, 1973 | |
| Alex Garza | Michigan | Democratic | Feb 13, 1994 | 24 years, 322 days | Jan 1, 2019 – Jan 1, 2023 | Priorly mayor pro tempore of Taylor (2017–2019). |
| John I. Kleiber | Texas | Democratic | Feb 25, 1866 | 24 years, 322 days | Jan 13, 1891 – Jan 10, 1893 | |
| Al Sturgeon | Iowa | Democratic | Feb 14, 1956 | 24 years, 322 days | Jan 1, 1981 – Jan 1, 1987 | |
| Samantha Vang | Minnesota | Democratic | Feb 20, 1994 | 24 years, 322 days | Jan 8, 2019 – present | |
| George S. Weed | New York | Democratic | Feb 13, 1862 | 24 years, 322 days | Jan 1, 1887 – Dec 31, 1888 | |
| Timothy Wesco | Indiana | Republican | Dec 16, 1985 | 24 years, 322 days | Nov 3, 2010 – present | |
| Paul Alfonsi | Wisconsin | Republican | Feb 13, 1908 | 24 years, 325 days | Jan 3, 1933 – Jan 3, 1939, Jan 5, 1959 – Jan 4, 1971 | Later speaker of the state House (1937–1939) and candidate for governor (1940). Switched to the Wisconsin Progressive Party in 1934, and back to the Republican Party in 1942. |
| Paul Alfonsi | Wisconsin | Progressive | Feb 13, 1908 | 24 years, 325 days | Jan 3, 1933 – Jan 3, 1939, Jan 5, 1959 – Jan 4, 1971 | Later speaker of the state House (1937–1939) and candidate for governor (1940). Switched to the Wisconsin Progressive Party in 1934, and back to the Republican Party in 1942. |
| Paul Alfonsi | Wisconsin | Republican | Feb 13, 1908 | 24 years, 325 days | Jan 3, 1933 – Jan 3, 1939, Jan 5, 1959 – Jan 4, 1971 | Later speaker of the state House (1937–1939) and candidate for governor (1940). Switched to the Wisconsin Progressive Party in 1934, and back to the Republican Party in 1942. |
| Richard P. Roche | Massachusetts | Democratic | Feb 15, 1952 | 24 years, 325 days | Jan 5, 1977 – Jan 7, 1981 | |
| Joseph C. Czerwinski | Wisconsin | Democratic | Feb 15, 1944 | 24 years, 326 days | Jan 6, 1969 – Jan 5, 1981 | |
| Daniel J. O'Connell | Massachusetts | Democratic | Feb 13, 1908 | 24 years, 326 days | Jan 4, 1933 – Jan 2, 1935 | |
| Jake LaTurner | Kansas | Republican | Feb 17, 1988 | 24 years, 327 days | Jan 9, 2013 – Apr 25, 2017 | Later state treasurer (2017–2021) and U.S. representative (2021–present). |
| John F. Buckley | Wisconsin | Republican | Feb 10, 1892 | 24 years, 328 days | Jan 3, 1917 – Jan 3, 1921 | |
| George Hasay | Pennsylvania | Republican | Feb 7, 1948 | 24 years, 329 days | Jan 1, 1973 – Nov 30, 2006 | |
| Hugh C. Todd | Washington | Democratic | Feb 16, 1884 | 24 years, 330 days | Jan 11, 1909 – Jan 13, 1913 | |
| Edwin A. Buck | Connecticut | Republican | Feb 11, 1832 | 24 years, 331 days | Jan 7, 1857 – Jan 6, 1858 | |
| William Nathaniel Rogers | New Hampshire | Democratic | Jan 10, 1892 | 24 years, 331 days | Dec 6, 1916 – Dec 1, 1920 | Later U.S. representative (1923–1925, 1932–1937) and nominee for U.S. senator (1936). |
| Matthew Ruby | North Dakota | Republican | Jan 3, 1992 | 24 years, 333 days | Dec 1, 2016 – present | Son of Dan Ruby. |
| Branden Petersen | Minnesota | Republican | Feb 4, 1986 | 24 years, 334 days | Jan 4, 2011 – Jan 7, 2013 | Later state senator (2013–2015). |
| Donald P. Ryan | Wisconsin | Democratic | Feb 5, 1910 | 24 years, 336 days | Jan 7, 1935 – Jan 3, 1939 | |
| George S. Burgess | Massachusetts | Republican | Jan 30, 1876 | 24 years, 337 days | Jan 2, 1901 – Jan 1, 1902 | |
| Wilbur S. Miller | Connecticut | Republican | Feb 1, 1874 | 24 years, 337 days | Jan 4, 1899 – Jan 9, 1901, Jan 4, 1911 – Jan 8, 1913 | |
| Calvin Say | Hawaii | Democratic | Feb 1, 1952 | 24 years, 337 days | Jan 3, 1977 – Nov 3, 2020 | Later speaker of the state House (1999–2013). |
| Stoddard B. Colby | Vermont | Democratic | Feb 3, 1816 | 24 years, 338 days | Jan 6, 1841 – Jan 4, 1843 | Later nominee for lieutenant governor (1855) and register of the Treasury (1864–1867). |
| Darrin Camilleri | Michigan | Democratic | Jan 28, 1992 | 24 years, 339 days | Jan 1, 2017 – Jan 1, 2023 | Later state senator (2023–present). |
| Donald Betts | Kansas | Democratic | Feb 8, 1978 | 24 years, 339 days | Jan 13, 2003 – Jan 13, 2004 | Later state senator (2004–2009). |
| Nelson Dewey | Wisconsin | Democratic | Dec 19, 1813 | 24 years, 342 days | Nov 26, 1838 – Dec 5, 1842 | Later speaker of the House (1840), member of the territorial council (1842–1847), president of the council (1846–1847), governor (1848–1852) and state senator (1854–1856). |
| James E. Hagan | Massachusetts | Democratic | Jan 25, 1902 | 24 years, 345 days | Jan 5, 1927 – 1932 | Later mayor of Somerville (1934–1936). |
| Aaron Regunberg | Rhode Island | Democratic | Jan 26, 1990 | 24 years, 345 days | Jan 6, 2015 – Jan 1, 2019 | Nephew of Brad Schneider. Later candidate for lieutenant governor (2018). |
| Stan Jones | Indiana | Democratic | Nov 22, 1949 | 24 years, 349 days | Nov 6, 1974 – Nov 7, 1990 | |
| David C. Sanford | Connecticut | Republican | Jan 23, 1876 | 24 years, 351 days | Jan 9, 1901 – Jan 7, 1903 | |
| Bob McEwen | Ohio | Republican | Jan 12, 1950 | 24 years, 354 days | Jan 1, 1975 – Dec 31, 1980 | Later U.S. representative (1981–1993). |
| A. A. Ames | Minnesota | Democratic | Jan 18, 1842 | 24 years, 355 days | Jan 8, 1867 – Jan 6, 1868 | Son of Alfred Elisha Ames. Later mayor of Minneapolis (1876–1877, 1882–1884, 1886–1889, 1901–1902) and nominee for governor (1886). |
| Thomas E. Bramlette | Kentucky | Whig | Jan 3, 1817 | 24 years, 362 days | Dec 31, 1841 – Mar 3, 1842 | Son of state senator Ambrose S. Bramlette. Later governor (1863–1867). |
| Randolph H. Chandler | Connecticut | Republican | Jan 11, 1854 | 24 years, 362 days | Jan 8, 1879 – Jan 5, 1881 Jan 9, 1901 – Jan 7, 1903 | |
| Fernand St Germain | Rhode Island | Democratic | Jan 9, 1928 | 24 years, 363 days | Jan 6, 1953 – Jan 3, 1961 | Later U.S. representative (1961–1989). |
| Robert T. Abernathy | Missouri | Democratic | 1884 | 24 years | Jan 6, 1909 – [?] | |
| Michael A. Batza | Connecticut | Democratic | 1912 | 24 years | Jan 6, 1937 – Jan 4, 1939 | |
| Richard W. Bowden | Washington | Democratic | 1910 | 24 years | Jan 14, 1935 – Jan 11, 1937 | |
| George Bradley | Minnesota | [?] | 1833 | 24 years | Dec 2, 1857 – Dec 6, 1859 | Later speaker of the state House (1858–1859). |
| Elmer L. Brown | Kentucky | Democratic | 1889 | 24 years | Jan 1, 1914 – Jan 1, 1916 | |
| Christopher Davis | Connecticut | Republican | 1986 | 24 years | Jan 5, 2011 – Jan 6, 2021 | |
| Charles E. Gaches | Washington | Republican | 1882 | 24 years | Jan 14, 1907 – Jan 11, 1909 | |
| John A. Giordano | Connecticut | Democratic | 1950 | 24 years | Jan 8, 1975 – Jan 5, 1977 | |
| J. Martin Hennessey | Connecticut | Democratic | 1948 | 24 years | Jan 3, 1973 – Jan 8, 1975 | |
| George W. Kavanagh | New York | Democratic | 1880 | 24 years | Jan 1, 1905 – Dec 31, 1906 | |
| Leo J. Kelly | Connecticut | Democratic | 1888 | 24 years | Jan 8, 1913 – Jan 6, 1915 | |
| Ernest T. Olson | Washington | Democratic | 1914 | 24 years | Jan 9, 1939 – Jan 13, 1941 | |
| Louis B. Rosenfeld | Connecticut | Republican | 1896 | 24 years | Jan 5, 1921 – Jan 3, 1923 | |
| Joseph W. Schwartz | Connecticut | Democratic | Dec 1950 | 24 years | Jan 8, 1975 – Jan 5, 1977 | |
| Francis S. Skiff | Connecticut | Democratic | 1866 | 24 years | Jan 7, 1891 – Jan 4, 1893, Jan 6, 1915 – Jan 3, 1917 | |
| Robert J. Stack | Connecticut | Republican | 1898 | 24 years | Jan 8, 1923 – Jan 7, 1925 | |
| Nicholas Tomassetti | Connecticut | Democratic | 1914 | 24 years | Jan 4, 1939 – Jan 8, 1947 | |
| Gino White | Idaho | Democratic | 1962–1963 | 24 years | 1987 – Dec 1, 1994 | |
| Jim Yost | Idaho | Republican | 1948 | 24 years | Dec 1, 1972 – Dec 1, 1976 | |
| Robert P. Letcher | Kentucky | Democratic-Republican | Feb 10, 1788 | 24–25 years | 1813–1815, 1817–1821 | Later U.S. representative (1823–1833, 1834–1835) and governor (1840–1844). |
| George Mason III | Virginia | Independent | 1690 | 24–25 years | 1715 – 1726 | Son of George Mason II. |
| James Moore Wayne | Georgia | Independent | 1790 | 24–25 years | 1815–1816 | Later mayor of Savannah (1817–1819), U.S. representative (1829–1835) and associate justice of the Supreme Court (1835–1867). |

### Territorial legislators

| Name | Territory | Political party | Date of birth | Age upon taking office | Tenure | Notes |
| Luis Ángel Torres Torres | Puerto Rico | Independence | Jul 26, 1948 | 24 years, 166 days | Jan 8, 1973 – [?] | |
| Zilpher Jennings | American Samoa | Independent | Jun 13, 1928 | 24 years, 233 days | Feb 1, 1953 – 1954 | One of the first two women elected to the American Samoa House of Representatives. |
| Benigno Aquino Sr. | Philippines | Nacionalista | Sep 3, 1894 | 24 years, 273 days | Jun 3, 1919 – Jun 5, 1928 | Son of Servillano Aquino. Later territorial senator (1928–1934), member of the National Assembly (1935–1938, 1943–1944) and speaker of the Philippine House (1943–1944). |
| Mariano Jesús Cuenco | Philippines | Nacionalista | Jan 16, 1888 | 24 years, 274 days | Oct 16, 1912 – Jul 26, 1928 | Later governor of Cebu (1931–1934), secretary of public works and communications (1936–1939), Philippine senator (1946–1951, 1953–1964) and senate president (1949–1951). |
| Danny López Soto | Puerto Rico | New Progressive | Mar 13, 1944 | 24 years, 295 days | Jan 2, 1969 – Jan 1, 1977 | Later territorial senator (1977–1985). Co-founder of the New Progressive Party (1967). |
| Melinda Romero Donnelly | Puerto Rico | New Progressive | Oct 8, 1971 | 25 years, 86 days | Jan 2, 1997 – Jan 1, 2005 | Daughter of Carlos Romero Barceló. Later territorial senator (2009–2013) and shadow U.S. senator (2021–present). |
| Benny Frankie Cerezo | Puerto Rico | New Progressive | Sep 27, 1943 | 25 years, 97 days | Jan 2, 1969 – Jan 1, 1973 | Co-founder of the New Progressive Party (1967). |
| Jorge de Castro Font | Puerto Rico | Popular Democratic | Sep 10, 1963 | 25 years, 114 days | Jan 2, 1989 – Jan 1, 2005 | Left the Popular Democratic Party in August 2001, and joined the New Progressive Party in September 2002. Later territorial senator (2005–2009) and senate majority leader (2005). |
| Jorge de Castro Font | Puerto Rico | Independent | Sep 10, 1963 | 25 years, 114 days | Jan 2, 1989 – Jan 1, 2005 | Left the Popular Democratic Party in August 2001, and joined the New Progressive Party in September 2002. Later territorial senator (2005–2009) and senate majority leader (2005). |
| Jorge de Castro Font | Puerto Rico | New Progressive | Sep 10, 1963 | 25 years, 114 days | Jan 2, 1989 – Jan 1, 2005 | Left the Popular Democratic Party in August 2001, and joined the New Progressive Party in September 2002. Later territorial senator (2005–2009) and senate majority leader (2005). |
| Miguel Raffiñan | Philippines | Nacionalista | May 13, 1891 | 25 years, 156 days | Oct 16, 1916 – Oct 27, 1922, Jul 16, 1931 – Jul 16, 1934, Jan 24, 1939 – Dec 16, 1941 | Later mayor of Cebu City (1947–1951). |
| Teodoro Kalaw | Philippines | Nacionalista | Mar 31, 1884 | 25 years, 199 days | Oct 16, 1909 – Oct 16, 1912 | Later territorial secretary of the interior (1920–1922). |
| Jenniffer González | Puerto Rico | New Progressive | Aug 5, 1976 | 25 years, 207 days | Feb 28, 2002 – Jan 2, 2017 | Later speaker of the House (2009–2013), minority leader (2013–2017), chair of the territorial Republican Party (2015–2021) and resident commissioner (2017–present). |
| Kurt Moylan | Guam | Independent | Jan 14, 1939 | 25 years, 356 days | Jan 4, 1965 – Jan 2, 1967 | Later co-founder of the territorial Republican Party (1966), secretary of the territory (1969–1971) and lieutenant governor (1971–1975). |
| Kurt Moylan | Guam | Republican | Jan 14, 1939 | 25 years, 356 days | Jan 4, 1965 – Jan 2, 1967 | Later co-founder of the territorial Republican Party (1966), secretary of the territory (1969–1971) and lieutenant governor (1971–1975). |
| Samuel Ioka Ale Meleisea | American Samoa | Independent | Mar 1991 | 25 years | Jan 3, 2017 – present | |