| Congress |
Dates |
State and number of representatives |
| 1st | 1789–1791 | Connecticut (5), New Jersey (4), New Hampshire (3), Pennsylvania (8) |
| 2nd | 1791–1793 | Connecticut (5), New Jersey (4), New Hampshire (3) |
| 3rd | 1793–1795 | Connecticut (7), Georgia (2), New Jersey (5), New Hampshire (4), Pennsylvania (13), Rhode Island (2) |
| 4th and 5th | 1795–1799 | Connecticut (7), Georgia (2), New Jersey (5), New Hampshire (4), Rhode Island (2) |
| 6th | 1799–1801 | Connecticut (7), Georgia (2), New Hampshire (4), Rhode Island (2) |
| 7th | 1801–1803 | Connecticut (7), Georgia (2), New Jersey (5), New Hampshire (4), Rhode Island (2) |
| 8th | 1803–1805 | Connecticut (7), Georgia (4), New Jersey (6), New Hampshire (5), Rhode Island (2), Tennessee (3) |
| 9th to 12th | 1805–1813 | Connecticut (7), Georgia (4), New Jersey (6), New Jersey (5), Rhode Island (2) |
| 13th | 1813–1815 | Connecticut (7), Delaware (2), Georgia (6), New Hampshire (6), Rhode Island (2), Vermont (6) |
| 14th to 16th | 1815–1821 | Connecticut (7), Delaware (2), Georgia (6), New Jersey (6), New Hampshire (6), Rhode Island (2), Vermont (6) |
| 17th | 1821–1823 | Connecticut (7), Delaware (2), Georgia (6), New Jersey (6), New Hampshire (6), Rhode Island (2) |
| 18th | 1823–1825 | Connecticut (6), Georgia (7), New Jersey (6), New Hampshire (6), Rhode Island (2), Vermont (5) |
| 19th | 1825–1827 | Connecticut (6), Georgia (7), New Jersey (6), New Hampshire (6), Rhode Island (2) |
| 20th | 1827–1829 | Connecticut (6), New Jersey (6), New Hampshire (6), Rhode Island (2) |
| 21st and 22nd | 1829–1833 | Connecticut (6), Georgia (7), New Jersey (6), New Hampshire (6), Rhode Island (2) |
| 23rd and 24th | 1833–1837 | Connecticut (6), Georgia (9), Missouri (2), Mississippi (2), New Jersey (6), New Hampshire (5), Rhode Island (2) |
| 25th and 26th | 1837–1841 | New Hampshire (5), Georgia (9), Missouri (2), Mississippi (2), New Jersey (6), Rhode Island (2) |
| 27th | 1841–1843 | Alabama (5), Georgia (9), Missouri (2), Mississippi (2), New Hampshire (5), New Jersey (6), Rhode Island (2) |
| 28th | 1843–1845 | New Hampshire (4), Georgia (8), Missouri (5), Mississippi (4) |
| 29th | 1845–1847 | Iowa (2), New Hampshire (4), Missouri (5), Mississippi (4) |
| 30th | 1847–1849 | Wisconsin (2) |
| 31st to 34th | 1849–1857 | California (2) |
| 35th to 37th | 1857–1863 | California (2), Minnesota (2) |
| 38th to 42nd | 1863–1873 | California (3) |
| 43rd to 47th | 1873–1883 | Florida (2), Kansas (3) |
| 48th | 1883–1885 | Maine (4) |
| 51st and 52nd | 1889–1893 | South Dakota (2) |
| 53rd to 57th | 1893–1903 | South Dakota (2), Washington (2) |
| 58th to 60th | 1903–1909 | North Dakota (2), South Dakota (2), Washington (3) |
| 61st | 1909–1911 | North Dakota (2), South Dakota (2) |
| 62nd | 1911–1913 | North Dakota (2), New Mexico (2), South Dakota (2) |
| 63rd | 1913–1915 | Idaho (2), Montana (2), Utah (2) |
| 64th | 1915–1917 | Idaho (2), Montana (2) |
| 65th to 72nd | 1917–1933 | Idaho (2), Montana (2) |
| 73rd | 1933–1935 | Kentucky (9), Minnesota (9), Missouri (13), North Dakota (2), Virginia (9) |
| 74th to 77th | 1935–1943 | North Dakota (2) |
| 78th to 80th | 1943–1949 | Arizona (2), New Mexico (2), North Dakota (2) |
| 81st to 87th | 1949–1963 | New Mexico (2), North Dakota (2) |
| 88th | 1963–1965 | Alabama (8), Hawaii (2), New Mexico (2) |
| 89th and 90th | 1965–1969 | Hawaii (2), New Mexico (2) |
| 91st | 1969–1971 | Hawaii (2) |