# List of youngest members of the United States Congress

The following are historical lists of the youngest members of the United States Congress, in both the House of Representatives and the Senate. These members would be the equivalent to the "Baby of the House" in the parliaments of Commonwealth countries; the U.S. Congress does not confer a similar title upon its youngest members.
The youngest U.S. congressman tends to be older than the youngest MPs in Commonwealth countries. This is partly because the minimum age requirements enumerated in Article One of the United States Constitution bar persons under the age of 25 years and 30 years from serving in the House and Senate, respectively. Additionally, the political culture of the United States encourages young politicians to gain experience in state and local offices before running for Congress. Although the vast majority of members of Congress gained state and local experience before being elected to Congress, members lacking state and local experience have increased recently.
Maxwell Frost is the youngest member of the 118th Congress at age 28. He succeeded one-term representative Madison Cawthorn, who was the youngest person elected to the U.S. Congress since Jed Johnson Jr. in 1964, the second-youngest congressman in United States history.
Jon Ossoff is the youngest sitting senator at 38, replacing Josh Hawley, who at 41 was the youngest senator of the 116th Congress. Ossoff is the youngest person elected to the U.S. Senate since Don Nickles in 1980. The average age of senators is higher now than in the past. In the 19th century, several state legislatures elected senators in their late twenties despite the Constitutional minimum age of 30, such as Henry Clay, who was sworn into office at age 29, and John Henry Eaton, the youngest U.S. senator in history, who took his oath of office when he was 28 years, 4 months and 29 days old.

## List of youngest U.S. senators

For senators elected to a regular session, the starting date is the date on which the new Congress convened. From 1789 to 1935, this is March 4 (with the previous Congress ending on March 3); from 1937 onward, this is January 3.
For senators appointed to a vacancy or elected in a special election, the starting date represents their swearing-in date.
| Duration as youngest | Name | State | Party | Start age | End age |
| March 4, 1789 – July 25, 1789 | James Gunn | GA | Anti-Administration | 35 years, 356 days | 36 years, 134 days |
| July 25, 1789 – December 6, 1790 | Rufus King | NY | Pro-Administration | 34 years, 123 days | 35 years, 257 days |
| December 6, 1790 – March 4, 1791 | James Monroe | VA | Anti-Administration | 32 years, 222 days | 32 years, 310 days |
| March 4, 1791 – December 2, 1793 | John Rutherfurd | NJ | Pro-Administration | 30 years, 165 days | 33 years, 73 days |
| December 2, 1793 – February 28, 1794 | Albert Gallatin | PA | Anti-Administration | 32 years, 307 days | 33 years, 30 days |
| February 28, 1794 – April 24, 1794 | John Rutherfurd | NJ | Pro-Administration | 33 years, 161 days | 33 years, 216 days |
| April 24, 1794 – December 6, 1796 | James Ross | PA | Federalist | 31 years, 286 days | 34 years, 147 days |
| April 12, 1796 – December 6, 1796 | Josiah Tattnall | GA | Democratic-Republican | 33–34 | 33–34 |
| December 6, 1796 – November 22, 1797 | Richard Stockton | NJ | Federalist | 32 years, 233 days | 33 years, 219 days |
| November 22, 1797 – April 1, 1798 | Andrew Jackson | TN | Democratic-Republican | 30 years, 252 days | 31 years, 17 days |
| April 1, 1798 – February 4, 1799 | Ray Greene | RI | Federalist | 33 years, 58 days | 34 years, 2 days |
| February 4, 1799 – March 3, 1801 | William Wells | DE | Federalist | 30 years, 28 days | 32 years, 56 days |
| March 4, 1801 – October 17, 1803 | Samuel White | DE | Federalist | 30 years, 93 days | 32 years, 320 days |
| October 17, 1803 – December 29, 1806 | Thomas Worthington | OH | Democratic-Republican | 30 years, 93 days | 33 years, 166 days |
| December 29, 1806 – March 4, 1807 | Henry Clay | KY | Democratic-Republican | 29 years, 261 days | 29 years, 326 days |
| March 4, 1807 – September 1807 | James Fenner | RI | Democratic-Republican | 36 years, 41 days | 36 years, 222 days |
| September 1807 – December 9, 1807 | Samuel White | DE | Federalist | 36 years, 274 days | 37 years, 8 days |
| December 9, 1807 – January 12, 1810 | William Crawford | GA | Democratic-Republican | 35 years, 288 days | 37 years, 322 days |
| May 26, 1809 – January 12, 1810 | Jenkin Whiteside | TN | Democratic-Republican | 36–37 | 37–38 |
| January 12, 1810 – March 3, 1813 | Alexander Campbell | OH | Democratic-Republican | 30–31 | 33–34 |
| March 4, 1813 – May 27, 1813 | Outerbridge Horsey | DE | Federalist | 35 years, 364 days | 36 years, 80 days |
| May 24, 1813 – May 27, 1813 | William Bulloch | GA | Democratic-Republican | 35–36 | 35–36 |
| May 27, 1813 – December 6, 1813 | Robert Goldsborough | MD | Federalist | 34 years, 143 days | 34 years, 336 days |
| December 6, 1813 – April 9, 1814 | William Bibb | GA | Democratic-Republican | 32 years, 65 days | 32 years, 189 days |
| April 9, 1814 – February 2, 1815 | Jesse Wharton | TN | Democratic-Republican | 31 years, 254 days | 32 years, 188 days |
| February 2, 1815 – January 22, 1816 | William Barry | KY | Democratic-Republican | 30 years, 362 days | 31 years, 351 days |
| January 22, 1816 – March 3, 1817 | Armistead Mason | VA | Democratic-Republican | 28 years, 171 days | 29 years, 212 days |
| March 4, 1817 – November 16, 1818 | John Crittenden | KY | Democratic-Republican | 29 years, 175 days | 31 years, 67 days |
| November 16, 1818 – March 3, 1821 | John Eaton | TN | Democratic-Republican | 28 years, 151 days | 30 years, 259 days |
| March 4, 1821 – December 3, 1821 | Samuel Southard | NJ | Democratic-Republican | 33 years, 268 days | 34 years, 177 days |
| December 3, 1821 – March 3, 1823 | John Eaton | TN | Democratic-Republican | 31 years, 168 days | 32 years, 259 days |
| March 4, 1823 – March 3, 1825 | Robert Hayne | SC | Democratic-Republican | 31 years, 114 days | 33 years, 114 days |
| March 4, 1825 – March 3, 1829 | Elias Kane | IL | Jacksonian | 30 years, 270 days | 34 years, 270 days |
| March 4, 1829 – December 16, 1833 | John Clayton | DE | Anti-Jacksonian | 32 years, 223 days | 37 years, 145 days |
| December 16, 1833 – December 31, 1833 | Lewis Linn | MO | Jacksonian | 37 years, 41 days | 37 years, 56 days |
| December 31, 1833 – March 3, 1835 | John King | GA | Jacksonian | 34 years, 272 days | 35 years, 335 days |
| March 4, 1835 – December 5, 1836 | Robert Walker | MS | Jacksonian | 33 years, 228 days | 35 years, 139 days |
| December 5, 1836 – February 2, 1837 | Ambrose Sevier | AR | Jacksonian | 35 years, 31 days | 35 years, 90 days |
| February 2, 1837 – March 3, 1837 | Alexandre Mouton | LA | Jacksonian | 32 years, 75 days | 32 years, 105 days |
| March 4, 1837 – January 11, 1841 | Franklin Pierce | NH | Democratic | 32 years, 101 days | 36 years, 49 days |
| January 11, 1841 – February 7, 1842 | Alfred Nicholson | TN | Democratic | 32 years, 133 days | 33 years, 160 days |
| February 7, 1842 – February 28, 1842 | Franklin Pierce | NH | Democratic | 37 years, 76 days | 37 years, 97 days |
| February 28, 1842 – March 1, 1842 | Alexandre Mouton | LA | Democratic | 37 years, 101 days | 37 years, 102 days |
| March 1, 1842 – April 14, 1842 | William Graham | NC | Whig | 37 years, 177 days | 37 years, 221 days |
| April 14, 1842 – July 6, 1842 | Charles Conrad | LA | Whig | 37 years, 111 days | 37 years, 194 days |
| July 6, 1842 – March 3, 1843 | William Dayton | NJ | Whig | 35 years, 139 days | 36 years, 15 days |
| March 4, 1843 – December 4, 1843 | Ned Hannegan | IN | Democratic | 35 years, 252 days | 36 years, 162 days |
| December 4, 1843 – March 3, 1845 | David Atchison | MO | Democratic | 36 years, 115 days | 37 years, 205 days |
| March 4, 1845 – March 3, 1847 | Jesse Bright | IN | Democratic | 32 years, 76 days | 34 years, 76 days |
| March 4, 1847 – June 26, 1848 | Stephen Douglas | IL | Democratic | 33 years, 315 days | 35 years, 64 days |
| June 26, 1848 – December 14, 1853 | Isaac Walker | WI | Democratic | 32 years, 237 days | 38 years, 42 days |
| December 14, 1853 – March 3, 1855 | Clement Clay | AL | Democratic | 37 years, 1 day | 38 years, 81 days |
| March 3, 1855 – March 5, 1860 | George Pugh | OH | Democratic | 32 years, 96 days | 37 years, 98 days |
| March 5, 1860 – January 22, 1863 | Milton Latham | CA | Democratic | 32 years, 287 days | 35 years, 244 days |
| January 22, 1863 – March 3, 1863 | David Turpie | IN | Democratic | 34 years, 198 days | 34 years, 239 days |
| March 4, 1863 – June 23, 1868 | William Sprague | RI | Republican | 32 years, 173 days | 37 years, 285 days |
| June 23, 1868 – June 30, 1868 | Alexander McDonald | AR | Republican | 36 years, 74 days | 36 years, 81 days |
| June 30, 1868 – July 25, 1868 | Thomas Osborn | FL | Republican | 35 years, 113 days | 35 years, 138 days |
| July 25, 1868 – March 3, 1873 | George Spencer | AL | Republican | 31 years, 267 days | 36 years, 123 days |
| March 4, 1873 – March 3, 1879 | Stephen Dorsey | AR | Republican | 31 years, 4 days | 37 years, 4 days |
| March 4, 1879 – March 3, 1881 | Blanche Bruce | MS | Republican | 38 years, 3 days | 40 years, 3 days |
| March 4, 1881 – October 11, 1881 | Arthur Gorman | MD | Democratic | 41 years, 358 days | 42 years, 214 days |
| October 11, 1881 – March 3, 1883 | Nelson Aldrich | RI | Republican | 39 years, 339 days | 41 years, 118 days |
| March 4, 1883 – December 2, 1889 | John Kenna | WV | Democratic | 34 years, 328 days | 41 years, 236 days |
| December 2, 1889 – March 3, 1891 | Richard Pettigrew | SD | Republican | 41 years, 132 days | 42 years, 224 days |
| March 4, 1891 – January 24, 1895 | John Irby | SC | Democratic | 36 years, 175 days | 40 years, 136 days |
| January 24, 1895 – March 3, 1895 | Jeter Pritchard | NC | Republican | 37 years, 196 days | 37 years, 235 days |
| March 4, 1895 – March 3, 1901 | Marion Butler | NC | Populist | 31 years, 288 days | 37 years, 288 days |
| March 4, 1901 – March 3, 1905 | Albert Beveridge | IN | Republican | 38 years, 149 days | 42 years, 149 days |
| March 4, 1901 – March 3, 1905 | Joseph W. Bailey | TX | Democratic | 38 years, 149 days | 42 years, 149 days |
| March 4, 1905 – January 30, 1907 | Elmer Burkett | NE | Republican | 37 years, 93 days | 39 years, 60 days |
| January 30, 1907 – March 3, 1907 | Frederick Mulkey | OR | Republican | 33 years, 24 days | 33 years, 57 days |
| March 4, 1907 – December 11, 1907 | Simon Guggenheim | CO | Republican | 39 years, 64 days | 39 years, 346 days |
| December 11, 1907 – December 26, 1907 | Thomas Gore | OK | Democratic | 37 years, 1 day | 37 years, 16 days |
| December 26, 1907 – March 22, 1908 | William Bryan | FL | Democratic | 31 years, 77 days | 31 years, 164 days |
| March 22, 1908 – January 9, 1911 | Thomas Gore | OK | Democratic | 37 years, 103 days | 40 years, 30 days |
| January 9, 1911 – January 31, 1911 | Davis Elkins | WV | Republican | 34 years, 350 days | 35 years, 7 days |
| January 31, 1911 – March 3, 1911 | Thomas Gore | OK | Democratic | 40 years, 52 days | 40 years, 84 days |
| March 4, 1911 – March 3, 1917 | Luke Lea | TN | Democratic | 31 years, 326 days | 37 years, 326 days |
| March 4, 1917 – July 8, 1918 | Peter Gerry | RI | Democratic | 37 years, 167 days | 38 years, 293 days |
| July 8, 1918 – November 5, 1918 | Christie Benet | SC | Democratic | 38 years, 194 days | 38 years, 314 days |
| November 5, 1918 – March 3, 1919 | Peter Gerry | RI | Democratic | 39 years, 48 days | 39 years, 167 days |
| March 4, 1919 – March 3, 1923 | Pat Harrison | MS | Democratic | 37 years, 187 days | 41 years, 187 days |
| March 4, 1923 – March 3, 1925 | Clarence Dill | WA | Democratic | 38 years, 164 days | 40 years, 164 days |
| March 4, 1925 – December 7, 1925 | Sam Bratton | NM | Democratic | 36 years, 197 days | 37 years, 110 days |
| December 7, 1925 – January 12, 1933 | Bob La Follette Jr. | WI | Republican | 30 years, 304 days | 37 years, 341 days |
| January 12, 1933 – June 21, 1935 | Richard Russell | GA | Democratic | 35 years, 71 days | 37 years, 231 days |
| June 21, 1935 – October 17, 1940 | Rush Holt | WV | Democratic | 30 years, 2 days | 35 years, 120 days |
| October 17, 1940 – December 12, 1940 | Joseph Ball | MN | Republican | 34 years, 349 days | 35 years, 39 days |
| December 12, 1940 – December 6, 1942 | Berkeley Bunker | NV | Democratic | 34 years, 122 days | 36 years, 116 days |
| December 6, 1942 – January 3, 1943 | Henry Lodge | MA | Republican | 40 years, 154 days | 40 years, 182 days |
| January 3, 1943 – November 14, 1944 | Joseph Ball | MN | Republican | 37 years, 61 days | 39 years, 11 days |
| November 14, 1944 – January 3, 1945 | William Jenner | IN | Republican | 36 years, 116 days | 36 years, 166 days |
| January 3, 1945 – January 18, 1945 | Joseph Ball | MN | Republican | 39 years, 61 days | 39 years, 76 days |
| January 18, 1945 – August 26, 1945 | Hugh Mitchell | WA | Democratic | 37 years, 302 days | 38 years, 157 days |
| August 26, 1945 – January 3, 1947 | William Knowland | CA | Republican | 37 years, 61 days | 38 years, 191 days |
| January 3, 1947 – December 31, 1948 | Joseph McCarthy | WI | Republican | 38 years, 50 days | 40 years, 47 days |
| December 31, 1948 – January 3, 1957 | Russell Long | LA | Democratic | 30 years, 58 days | 38 years, 61 days |
| January 3, 1957 – June 15, 1961 | Frank Church | ID | Democratic | 32 years, 162 days | 36 years, 325 days |
| June 15, 1961 – December 7, 1961 | John Tower | TX | Republican | 35 years, 259 days | 36 years, 69 days |
| December 7, 1961 – November 6, 1962 | Moe Murphy | NH | Republican | 34 years, 65 days | 35 years, 35 days |
| November 7, 1962 – January 3, 1969 | Ted Kennedy | MA | Democratic | 30 years, 258 days | 36 years, 316 days |
| January 3, 1969 – January 2, 1971 | Bob Packwood | OR | Republican | 36 years, 114 days | 38 years, 113 days |
| January 2, 1971 – January 3, 1973 | John Tunney | CA | Democratic | 36 years, 190 days | 38 years, 191 days |
| January 3, 1973 – January 3, 1979 | Joe Biden | DE | Democratic | 30 years, 44 days | 36 years, 44 days |
| January 3, 1979 – January 3, 1981 | Bill Bradley | NJ | Democratic | 35 years, 159 days | 37 years, 159 days |
| January 3, 1981 – March 11, 1987 | Don Nickles | OK | Republican | 32 years, 28 days | 38 years, 95 days |
| March 11, 1987 – January 3, 1989 | David Karnes | NE | Republican | 38 years, 89 days | 40 years, 22 days |
| January 3, 1989 – January 3, 1993 | Don Nickles | OK | Republican | 40 years, 28 days | 44 years, 28 days |
| January 3, 1993 – January 3, 1995 | Russ Feingold | WI | Democratic | 39 years, 307 days | 41 years, 307 days |
| January 3, 1995 – January 3, 1999 | Rick Santorum | PA | Republican | 36 years, 238 days | 40 years, 238 days |
| January 3, 1999 – January 3, 2003 | Peter Fitzgerald | IL | Republican | 38 years, 75 days | 42 years, 75 days |
| January 3, 2003 – January 3, 2009 | John Sununu | NH | Republican | 38 years, 115 days | 44 years, 115 days |
| January 3, 2009 – January 22, 2009 | Mark Pryor | AR | Democratic | 45 years, 359 days | 46 years, 12 days |
| January 22, 2009 – January 27, 2009 | Michael Bennet | CO | Democratic | 44 years, 55 days | 44 years, 60 days |
| January 27, 2009 – September 10, 2009 | Kirsten Gillibrand | NY | Democratic | 42 years, 49 days | 42 years, 275 days |
| September 10, 2009 – July 20, 2010 | George LeMieux | FL | Republican | 40 years, 112 days | 41 years, 60 days |
| July 20, 2010 – November 15, 2010 | Carte Goodwin | WV | Democratic | 36 years, 143 days | 36 years, 261 days |
| November 15, 2010 – January 3, 2011 | George LeMieux | FL | Republican | 41 years, 178 days | 41 years, 227 days |
| January 3, 2011 – December 26, 2012 | Mike Lee | UT | Republican | 39 years, 213 days | 41 years, 205 days |
| December 26, 2012 – January 3, 2013 | Brian Schatz | HI | Democratic | 40 years, 67 days | 40 years, 75 days |
| January 3, 2013 – January 3, 2015 | Chris Murphy | CT | Democratic | 39 years, 153 days | 41 years, 153 days |
| January 3, 2015 – January 3, 2019 | Tom Cotton | AR | Republican | 37 years, 235 days | 41 years, 235 days |
| January 3, 2019 – January 20, 2021 | Josh Hawley | MO | Republican | 39 years, 3 days | 41 years, 20 days |
| January 20, 2021 – present | Jon Ossoff | GA | Democratic | 33 years, 339 days | 38 years, 27 days |

## List of youngest U.S. representatives

For representatives elected to a regular session, the starting date is the date at which the new Congress convened. From 1789 to 1935, this is March 4 (with the previous Congress ending on March 3); from 1937 onward, this is January 3.
For representatives elected in a special election, the starting date represents their swearing-in date.
| Duration as youngest | Congress | Name | District | Party | Start age | End age |
| March 4, 1789 – April 19, 1790 | 1st | Richard Lee | VA-04 | Pro-Administration | 28 years, 43 days | 29 years, 89 days |
| April 19, 1790 – March 3, 1793 | 1st–2nd | John Steele | NC-04, 01 | Pro-Administration | 25 years, 154 days | 28 years, 108 days |
| March 4, 1793 – March 3, 1795 | 3rd | Francis Preston | VA-04 | Anti-Administration | 27 years, 214 days | 29 years, 214 days |
| March 4, 1795 – May 5, 1796 | 4th | Nathaniel Freeman | MA-05 | Federalist | 28 years, 307 days | 30 years, 4 days |
| May 5, 1796 – March 3, 1797 | 4th | Richard Sprigg | MD-02 | Democratic-Republican | 26–27 | 27–28 |
| March 4, 1797 – November 23, 1797 | 5th | John Dennis | MD-08 | Federalist | 25 years, 77 days | 25 years, 341 days |
| November 23, 1797 – March 3, 1801 | 5th–6th | William Claiborne | TN-AL | Democratic-Republican | 21–22 | 25–26 |
| March 4, 1801 – December 6, 1802 | 7th | John Stanly | NC-10 | Federalist | 26 years, 329 days | 28 years, 241 days |
| December 6, 1802 – March 3, 1803 | 7th | Samuel Thatcher | MA-12 | Federalist | 26 years, 158 days | 26 years, 246 days |
| March 4, 1803 – March 4, 1805 | 8th–9th | John Jackson | VA-01 | Democratic-Republican | 25 years, 163 days | 27 years, 163 days |
| March 4, 1805 – December 1, 1806 | 9th | John Claiborne | VA-17 | Democratic-Republican | 27 years, 37 days | 28 years, 309 days |
| December 1, 1806 – January 26, 1807 | 9th | William Burwell | VA-13 | Democratic-Republican | 26 years, 261 days | 26 years, 317 days |
| January 26, 1807 – March 3, 1807 | 9th | William Bibb | GA-AL | Democratic-Republican | 25 years, 116 days | 25 years, 153 days |
| March 4, 1807 – March 3, 1809 | 10th | Jesse Wharton | TN-03 | Democratic-Republican | 24 years, 218 days | 26 years, 218 days |
| March 4, 1809 – November 27, 1809 | 11th | William Bibb | GA-AL | Democratic-Republican | 27 years, 153 days | 28 years, 56 days |
| November 27, 1809 – March 3, 1811 | 11th | Jonathan Jennings | IN-AL | Democratic-Republican | 25 years, 245 days | 26 years, 342 days |
| March 4, 1811 – November 4, 1811 | 12th | William King | NC-05 | Democratic-Republican | 24 years, 331 days | 25 years, 211 days |
| November 4, 1811 – March 3, 1815 | 12th–13th | Stevenson Archer | MD-06 | Democratic-Republican | 25 years, 24 days | 28 years, 144 days |
| March 4, 1815 – December 17, 1816 | 14th | Richard Wilde | GA-AL | Democratic-Republican | 25 years, 161 days | 27 years, 84 days |
| December 17, 1816 – March 3, 1817 | 14th | John Tyler | VA-23 | Democratic-Republican | 26 years, 263 days | 26 years, 340 days |
| March 4, 1817 – December 4, 1818 | 15th | George Robertson | KY-07 | Democratic-Republican | 26 years, 106 days | 28 years, 16 days |
| December 4, 1818 – March 3, 1819 | 15th | John McLean | IL-AL | Democratic-Republican | 27 years, 303 days | 28 years, 28 days |
| March 4, 1819 – March 3, 1823 | 16th–17th | Daniel Cook | IL-AL | Democratic-Republican | 24–25 | 28–29 |
| December 4, 1822 – March 3, 1823 | 17th | Andrew Govan | SC-04 | Democratic-Republican | 28 years, 325 days | 29 years, 50 days |
| March 4, 1823 – March 3, 1825 | 18th | Thomas Moore | KY-07 | Democratic-Republican | 25–26 | 27–28 |
| March 4, 1825 – March 3, 1827 | 19th | John Bryan | NC-04 | Jacksonian | 26 years, 120 days | 28 years, 120 days |
| March 4, 1827 – February 13, 1828 | 20th | William Nuckolls | SC-07 | Jacksonian | 26 years, 9 days | 26 years, 355 days |
| February 13, 1828 – March 3, 1829 | 20th | Ambrose Sevier | AR-AL | Jacksonian | 26 years, 101 days | 27 years, 120 days |
| March 4, 1829 – March 3, 1831 | 21st | Dixon Lewis | AL-03 | Jacksonian | 26 years, 206 days | 28 years, 206 days |
| March 4, 1829 – March 3, 1831 | 21st | Spencer Pettis | MO-AL | Jacksonian | 26–27 | 28–29 |
| March 4, 1831 – March 3, 1833 | 22nd | Albert Hawes | KY-11 | Jacksonian | 26 years, 337 days | 28 years, 337 days |
| March 4, 1833 – March 3, 1835 | 23rd | David Dickinson | TN-08 | Jacksonian | 24 years, 267 days | 26 years, 267 days |
| March 4, 1835 – March 3, 1837 | 24th | John Claiborne | MS-AL | Jacksonian | 25 years, 314 days | 27 years, 314 days |
| March 4, 1837 – March 3, 1839 | 25th | Joseph Williams | TN-03 | Whig | 26 years, 132 days | 28 years, 132 days |
| March 4, 1839 – March 3, 1841 | 26th | Albert Brown | MS-AL | Democratic | 25 years, 277 days | 27 years, 277 days |
| March 4, 1841 – March 3, 1843 | 27th | John Mason | MD-06 | Democratic | 25 years, 299 days | 27 years, 299 days |
| March 4, 1843 – March 3, 1845 | 28th | Alexander Ramsey | PA-14 | Whig | 27 years, 177 days | 29 years, 177 days |
| March 4, 1845 – March 3, 1847 | 29th | Lucien Chase | TN-09 | Democratic | 27 years, 89 days | 29 years, 89 days |
| March 4, 1847 – March 3, 1849 | 30th | Richard Donnell | NC-08 | Whig | 26 years, 165 days | 28 years, 165 days |
| March 4, 1849 – March 3, 1851 | 31st | James Orr | SC-02 | Democratic | 26 years, 296 days | 28 years, 296 days |
| March 4, 1851 – March 3, 1853 | 32nd | William Churchwell | TN-03 | Democratic | 25 years, 12 days | 27 years, 12 days |
| March 4, 1853 – March 3, 1855 | 33rd | Milton Latham | CA-AL | Democratic | 25 years, 285 days | 27 years, 285 days |
| March 4, 1855 – July 23, 1856 | 34th | William Cumback | IN-04 | People's | 25 years, 345 days | 27 years, 121 days |
| July 23, 1856 – March 3, 1857 | 34th | Miguel Otero | NM-AL | Democratic | 27 years, 32 days | 27 years, 256 days |
| March 4, 1857 – December 3, 1860 | 35th–36th | Albert Jenkins | VA-11 | Democratic | 26 years, 114 days | 30 years, 23 days |
| December 3, 1860 – March 3, 1861 | 36th | John Brown | KY-05 | Democratic | 25 years, 158 days | 25 years, 249 days |
| March 4, 1861 – January 13, 1862 | 37th | Edward McPherson | PA-17 | Republican | 30 years, 216 days | 31 years, 166 days |
| January 13, 1862 – March 3, 1863 | 37th | Andrew Clements | TN-04 | Union | 29 years, 21 days | 30 years, 71 days |
| March 4, 1863 – March 3, 1865 | 38th | John McBride | OR-AL | Republican | 30 years, 194 days | 32 years, 194 days |
| March 3, 1865 – March 3, 1867 | 39th | Thomas Noell | MO-03 | Republican | 25 years, 335 days | 27 years, 335 days |
| March 4, 1867 – October 3, 1867 | 40th | Thomas Noell | MO-03 | Democratic | 27 years, 335 days | 28 years, 183 days |
| October 3, 1867 – June 24, 1868 | 40th | Charles Haight | NJ-02 | Democratic | 29 years, 272 days | 30 years, 172 days |
| June 24, 1868 – March 3, 1869 | 40th | Logan Roots | AR-01 | Republican | 27 years, 90 days | 27 years, 343 days |
| March 4, 1869 – March 31, 1870 | 41st | Clinton Cobb | NC-01 | Republican | 26 years, 191 days | 27 years, 218 days |
| March 31, 1870 – March 3, 1871 | 41st | John Conner | TX-02 | Democratic | 27 years, 178 days | 28 years, 151 days |
| March 4, 1871 – January 29, 1873 | 42nd | Josiah Walls | FL-AL | Republican | 28 years, 64 days | 30 years, 20 days |
| January 29, 1873 – March 3, 1873 | 42nd | John Conner | TX-02 | Democratic | 30 years, 107 days | 30 years, 151 days |
| March 4, 1873 – March 3, 1875 | 43rd | John Smith | VA-03 | Republican | 25 years, 162 days | 27 years, 162 days |
| March 4, 1875 – March 3, 1877 | 44th | John White | KY-09 | Republican | 26 years, 47 days | 28 years, 47 days |
| March 4, 1877 – February 20, 1878 | 45th | John Kenna | WV-03 | Democratic | 28 years, 328 days | 29 years, 316 days |
| February 20, 1878 – March 3, 1879 | 45th | Joseph Acklen | LA-03 | Democratic | 27 years, 276 days | 28 years, 288 days |
| March 4, 1879 – March 3, 1881 | 46th | Richard Frost | MO-03 | Democratic | 27 years, 65 days | 29 years, 65 days |
| March 4, 1881 – March 3, 1883 | 47th | Henry Dugro | NY-07 | Democratic | 25 years, 152 days | 27 years, 152 days |
| March 4, 1883 – December 1, 1884 | 48th | George Post | PA-15 | Democratic | 28 years, 184 days | 30 years, 91 days |
| December 1, 1884 – March 3, 1885 | 48th | Benjamin Shively | IN-13 | Anti-Monopoly | 27 years, 256 days | 27 years, 349 days |
| March 4, 1885 – February 2, 1887 | 49th | Bob La Follette | WI-03 | Republican | 29 years, 263 days | 31 years, 233 days |
| February 2, 1887 – March 3, 1887 | 49th | Hugh Price | WI-08 | Republican | 27 years, 62 days | 27 years, 92 days |
| March 4, 1887 – March 3, 1889 | 50th | Benjamin Shively | IN-13 | Democratic | 29 years, 349 days | 31 years, 349 days |
| March 4, 1889 – December 9, 1889 | 51st | Thomas Magner | NY-05 | Democratic | 28 years, 361 days | 29 years, 276 days |
| December 9, 1889 – March 3, 1891 | 51st | Charles Turner | NY-06 | Democratic | 28 years, 197 days | 29 years, 282 days |
| March 4, 1891 – May 5, 1892 | 52nd | Joseph W. Bailey | TX-05 | Democratic | 28 years, 149 days | 29 years, 212 days |
| May 5, 1892 – March 3, 1893 | 52nd | Joseph Kendall | KY-10 | Democratic | 28 years, 359 days | 29 years, 296 days |
| March 4, 1893 – March 3, 1895 | 53rd | Thomas Settle | NC-05 | Republican | 27 years, 359 days | 29 years, 359 days |
| March 4, 1895 – December 19, 1896 | 54th | Norman Mozley | MO-14 | Republican | 29 years, 83 days | 31 years, 8 days |
| December 19, 1896 – March 3, 1897 | 54th | Charles Crisp | GA-03 | Democratic | 26 years, 61 days | 26 years, 136 days |
| March 4, 1897 – March 3, 1899 | 55th | Thomas Bradley | NY-09 | Democratic | 27 years, 61 days | 29 years, 61 days |
| March 4, 1899 – March 3, 1901 | 56th | John Fitzgerald | NY-02 | Democratic | 26 years, 359 days | 28 years, 359 days |
| March 4, 1901 – March 3, 1903 | 57th | John Feely | IL-02 | Democratic | 25 years, 215 days | 27 years, 215 days |
| March 4, 1903 – March 3, 1905 | 58th | Burton French | ID-AL | Republican | 27 years, 215 days | 29 years, 215 days |
| March 4, 1905 – March 3, 1907 | 59th | Anthony Michalek | IL-05 | Republican | 27 years, 47 days | 29 years, 47 days |
| March 4, 1907 – March 3, 1909 | 60th | Harry Wolf | MD-03 | Democratic | 26 years, 261 days | 28 years, 261 days |
| March 4, 1909 – November 23, 1909 | 61st | Charles Edwards | GA-01 | Democratic | 30 years, 245 days | 31 years, 144 days |
| November 23, 1909 – March 3, 1911 | 61st | Manuel Quezon | PH-AL | Nacionalista | 31 years, 96 days | 32 years, 197 days |
| March 4, 1911 – June 2, 1911 | 62nd | James Byrnes | SC-02 | Democratic | 28 years, 306 days | 29 years, 31 days |
| June 2, 1911 – March 3, 1913 | 62nd | William Reyburn | PA-02 | Republican | 28 years, 167 days | 30 years, 77 days |
| March 4, 1913 – December 7, 1914 | 63rd | Clyde Kelly | PA-30 | Republican | 29 years, 212 days | 31 years, 125 days |
| December 7, 1914 – March 3, 1915 | 63rd | Carl Vinson | GA-10 | Democratic | 31 years, 19 days | 31 years, 106 days |
| March 4, 1915 – March 3, 1917 | 64th | Thomas Miller | DA-AL | Republican | 28 years, 251 days | 30 years, 251 days |
| March 4, 1917 – August 10, 1917 | 65th | Marvin Jones | TX-13 | Democratic | 35 years, 6 days | 35 years, 165 days |
| August 10, 1917 – August 19, 1919 | 65th–66th | John Baer | ND-01 | Republican | 31 years, 134 days | 33 years, 143 days |
| August 19, 1919 – December 6, 1920 | 66th | King Swope | KY-08 | Republican | 26 years, 9 days | 27 years, 118 days |
| December 6, 1920 – March 3, 1921 | 66th | Clarence McLeod | MI-13 | Republican | 25 years, 156 days | 25 years, 244 days |
| March 4, 1921 – March 3, 1923 | 67th | Thomas Ryan | NY-15 | Republican | 32 years, 260 days | 34 years, 260 days |
| March 4, 1923 – March 3, 1925 | 68th | Clarence McLeod | MI-13 | Republican | 27 years, 244 days | 29 years, 244 days |
| March 4, 1925 – March 3, 1927 | 69th | Samuel Montgomery | OK-01 | Republican | 28 years, 93 days | 30 years, 93 days |
| March 4, 1927 – March 3, 1929 | 70th | George Combs | MO-05 | Democratic | 27 years, 306 days | 29 years, 306 days |
| March 4, 1929 – March 7, 1932 | 71st–72nd | Fred Hartley | NJ-08 | Republican | 27 years, 10 days | 30 years, 14 days |
| March 7, 1932 – March 3, 1933 | 72nd | Carlton Mobley | GA-06 | Democratic | 25 years, 91 days | 26 years, 87 days |
| March 4, 1933 – January 3, 1935 | 73rd | Joseph Monaghan | MT-01 | Democratic | 26 years, 343 days | 28 years, 283 days |
| January 3, 1935 – January 3, 1937 | 74th | Elmer Ryan | MN-02 | Democratic | 27 years, 222 days | 29 years, 222 days |
| January 3, 1937 – January 3, 1939 | 75th | Jerry O'Connell | MT-01 | Democratic | 27 years, 203 days | 29 years, 203 days |
| January 3, 1939 – January 3, 1941 | 76th | Lindley Beckworth | TX-03 | Democratic | 25 years, 187 days | 27 years, 187 days |
| January 3, 1941 – January 3, 1943 | 77th | William Stratton | IL-AL | Republican | 26 years, 312 days | 28 years, 311 days |
| January 3, 1943 – January 21, 1943 | 78th | Lindley Beckworth | TX-03 | Democratic | 29 years, 187 days | 29 years, 205 days |
| January 21, 1943 – January 3, 1947 | 78th–79th | Marion T. Bennett | MO-06 | Republican | 28 years, 229 days | 32 years, 211 days |
| January 3, 1947 – December 4, 1948 | 80th | George Sarbacher | PA-05 | Republican | 27 years, 95 days | 29 years, 65 days |
| December 4, 1948 – January 3, 1949 | 80th | Lloyd Bentsen | TX-15 | Democratic | 27 years, 297 days | 27 years, 327 days |
| January 3, 1949 – January 3, 1951 | 81st | Hugo Sims | SC-02 | Democratic | 27 years, 81 days | 29 years, 81 days |
| January 3, 1951 – January 3, 1953 | 82nd | Patrick Hillings | CA-12 | Republican | 27 years, 318 days | 29 years, 319 days |
| January 3, 1953 – January 3, 1955 | 83rd | William Wampler | VA-09 | Republican | 26 years, 277 days | 28 years, 277 days |
| January 3, 1955 – December 13, 1955 | 84th | Kenneth Gray | IL-25 | Democratic | 30 years, 50 days | 31 years, 29 days |
| December 13, 1955 – January 3, 1959 | 84th–85th | John Dingell | MI-15 | Democratic | 29 years, 158 days | 32 years, 179 days |
| January 3, 1959 – January 3, 1961 | 86th | Dan Rostenkowski | IL-08 | Democratic | 31 years, 1 day | 33 years, 1 day |
| January 3, 1961 – January 3, 1963 | 87th | Ralph Harding | ID-02 | Democratic | 31 years, 116 days | 33 years, 116 days |
| January 3, 1963 – May 12, 1964 | 88th | Ed Foreman | TX-16 | Republican | 29 years, 12 days | 30 years, 142 days |
| May 12, 1964 – January 3, 1965 | 88th | William Green | PA-05 | Democratic | 25 years, 323 days | 26 years, 193 days |
| January 3, 1965 – January 3, 1967 | 89th | Jed Johnson | OK-06 | Democratic | 25 years, 7 days | 27 years, 7 days |
| January 3, 1967 – April 3, 1969 | 90th–91st | William Green | PA-05 | Democratic | 28 years, 193 days | 30 years, 283 days |
| April 3, 1969 – November 16, 1970 | 91st | Dave Obey | WI-07 | Democratic | 30 years, 182 days | 32 years, 44 days |
| November 16, 1970 – January 3, 1971 | 91st | Robert Steele | CT-02 | Republican | 32 years, 13 days | 32 years, 61 days |
| January 3, 1971 – April 29, 1971 | 92nd | Dawson Mathis | GA-02 | Democratic | 30 years, 34 days | 30 years, 150 days |
| April 29, 1971 – October 12, 1972 | 92nd | Mendel Davis | SC-01 | Democratic | 28 years, 188 days | 29 years, 355 days |
| October 12, 1972 – January 3, 1975 | 92nd–93rd | John Breaux | LA-07 | Democratic | 28 years, 225 days | 30 years, 308 days |
| January 3, 1975 – January 3, 1977 | 94th | Thomas Downey | NY-02 | Democratic | 25 years, 340 days | 27 years, 341 days |
| January 3, 1977 – January 3, 1979 | 95th | Nick Rahall | WV-04 | Democratic | 27 years, 228 days | 29 years, 228 days |
| January 3, 1979 – January 3, 1981 | 96th | James Shannon | MA-05 | Democratic | 26 years, 274 days | 28 years, 274 days |
| January 3, 1981 – January 3, 1983 | 97th | John LeBoutillier | NY-06 | Republican | 27 years, 222 days | 29 years, 222 days |
| January 3, 1983 – January 3, 1985 | 98th | Jim Cooper | TN-04 | Democratic | 28 years, 198 days | 30 years, 198 days |
| November 6, 1984 – January 3, 1985 | 98th | Carl Perkins | KY-07 | Democratic | 30 years, 92 days | 30 years, 150 days |
| January 3, 1985 – March 20, 1990 | 99th–101st | John Rowland | CT-05 | Republican | 27 years, 224 days | 32 years, 300 days |
| March 20, 1990 – January 3, 1991 | 101st | Susan Molinari | NY-14 | Republican | 31 years, 358 days | 32 years, 282 days |
| January 3, 1991 – January 3, 1993 | 102nd | Jim Nussle | IA-02 | Republican | 30 years, 190 days | 32 years, 190 days |
| January 3, 1993 – January 3, 1995 | 103rd | Cleo Fields | LA-04 | Democratic | 30 years, 42 days | 32 years, 42 days |
| January 3, 1995 – January 3, 1997 | 104th | Patrick Kennedy | RI-01 | Democratic | 27 years, 173 days | 29 years, 173 days |
| January 3, 1997 – January 3, 2001 | 105th–106th | Harold Ford Jr. | TN-09 | Democratic | 26 years, 237 days | 30 years, 237 days |
| January 3, 2001 – January 3, 2005 | 107th–108th | Adam Putnam | FL-12 | Republican | 26 years, 156 days | 30 years, 156 days |
| January 3, 2005 – January 3, 2009 | 109th–110th | Patrick McHenry | NC-10 | Republican | 29 years, 73 days | 33 years, 73 days |
| January 3, 2009 – January 3, 2013 | 111th–112th | Aaron Schock | IL-18 | Republican | 27 years, 220 days | 31 years, 220 days |
| January 3, 2013 – January 3, 2015 | 113th | Patrick Murphy | FL-18 | Democratic | 29 years, 279 days | 31 years, 279 days |
| January 3, 2015 – January 3, 2019 | 114th–115th | Elise Stefanik | NY-21 | Republican | 30 years, 185 days | 34 years, 185 days |
| January 3, 2019 – January 3, 2021 | 116th | Alexandria Ocasio-Cortez | NY-14 | Democratic | 29 years, 82 days | 31 years, 82 days |
| January 3, 2021 – January 3, 2023 | 117th | Madison Cawthorn | NC-11 | Republican | 25 years, 155 days | 27 years, 155 days |
| January 3, 2023 – present | 118th–119th | Maxwell Frost | FL-10 | Democratic | 25 years, 351 days | 28 years, 57 days |