| Member | Party | Years ↑ | Cong ress | Electoral history | District location |
|---|
| District created March 4, 1821 |
Ebenezer Herrick (Bowdoinham) | Democratic-Republican | March 4, 1821 – March 3, 1823 | 17th | Elected in 1821. Redistricted to the3rd district. | 1821 – 1823 Kennebec County (partial) andLincoln County (partial)[1] |
 Enoch Lincoln (Paris) | Democratic-Republican | March 4, 1823 – March 3, 1825 | 18th 19th | Redistricted from the7th district andre-elected in 1823. Re-elected in 1824. Resigned. | 1823 – 1833 Cumberland County (partial),Kennebec County (partial),Lincoln County (partial),Oxford County (partial)[2] |
| Anti-Jacksonian | March 4, 1825 – January 1826 |
| Vacant | January 1826 – September 11, 1826 | 19th | |
James W. Ripley (Fryeburg) | Jacksonian | September 11, 1826 – March 12, 1830 | 19th 20th 21st | Elected September 11, 1826 to finish Lincoln's term and seated December 4, 1826. Re-elected in 1826. Re-elected in 1828 on the second ballot. Resigned. |
| Vacant | March 12, 1830 – December 6, 1830 | 21st | |
Cornelius Holland (Canton) | Jacksonian | December 6, 1830 – March 3, 1833 | 21st 22nd | Elected to finish Ripley's term. Also elected to the next full term. Retired. |
Moses Mason Jr. (Bethel) | Jacksonian | March 4, 1833 – March 3, 1837 | 23rd 24th | Elected in 1833. Re-elected in 1834. Retired. | |
Timothy J. Carter (Paris) | Democratic | March 4, 1837 – March 14, 1838 | 25th | Elected in 1836. Died. |
| Vacant | March 14, 1838 – May 29, 1838 | |
 Virgil D. Parris (Buckfield) | Democratic | May 29, 1838 – March 3, 1841 | 25th 26th | Elected to finish Carter's term. Also elected to the next full term. Lost renomination. |
 Nathaniel Littlefield (Bridgeton) | Democratic | March 4, 1841 – March 3, 1843 | 27th | Elected in 1840. Retired. |
Benjamin White (Montville) | Democratic | March 4, 1843 – March 3, 1845 | 28th | Elected in 1843. Retired. |
 Cullen Sawtelle (Norridgewock) | Democratic | March 4, 1845 – March 3, 1847 | 29th | Elected in 1844. Retired. |
Ephraim K. Smart (Camden) | Democratic | March 4, 1847 – March 3, 1849 | 30th | Elected in 1846. Retired. |
 Cullen Sawtelle (Norridgewock) | Democratic | March 4, 1849 – March 3, 1851 | 31st | Elected in 1848. Retired. |
Ephraim K. Smart (Camden) | Democratic | March 4, 1851 – March 3, 1853 | 32nd | Elected in 1850. Lost re-election. |
 Israel Washburn Jr. (Orono) | Whig | March 4, 1853 – March 3, 1855 | 33rd 34th 35th 36th | Redistricted from the6th district andre-elected in 1852. Re-elected in 1854. Re-elected in 1856. Re-elected in 1858. Retired to run forgovernor and resigned when elected. |
| Republican | March 4, 1855 – January 1, 1861 |
| Vacant | January 1, 1861 – January 2, 1861 | 36th | |
 Stephen Coburn (Skowhegan) | Republican | January 2, 1861 – March 3, 1861 | Elected to finish Washburn's term. Retired. |
 John H. Rice (Foxcroft) | Republican | March 4, 1861 – March 3, 1863 | 37th | Elected in 1860. Redistricted to the4th district. |
 Frederick A. Pike (Calais) | Republican | March 4, 1863 – March 3, 1869 | 38th 39th 40th | Redistricted from the6th district andre-elected in 1862. Re-elected in 1864. Re-elected in 1866. Lost renomination. |
 Eugene Hale (Ellsworth) | Republican | March 4, 1869 – March 3, 1879 | 41st 42nd 43rd 44th 45th | Elected in 1868. Re-elected in 1870. Re-elected in 1872. Re-elected in 1874. Re-elected in 1876. Lost re-election. |
 Thompson Henry Murch (Rockland) | Greenback | March 4, 1879 – March 3, 1883 | 46th 47th | Elected in 1878. Re-elected in 1880. Redistricted to theat-large district and lost re-election. |
| District eliminated March 3, 1883 |