United States Congressional Apportionment - Past Apportionments

Past Apportionments

See also: Apportionment Bill

Note: The first apportionment was established by the Constitution based on population estimates made by the Philadelphia Convention, and was not based on any census or enumeration.

Census, Year Effected Size AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY
Const. 1789 65 – – – – – – 5 1 – 3 – – – – – – – – – 6 8 – – – – – – – 3 4 – 6 5 – – – – 8 1 5 – – – – – 10 – – – –
1st, 1790 1793 105 – – – – – – 7 1 – 2 – – – – – – 2 – – 8 14 – – – – – – – 4 5 – 10 10 – – – – 13 2 6 – – – – 2 19 – – – –
2nd, 1800 1803 142 – – – – – – 7 1 – 4 – – – – – – 6 – – 9 17 – – – – – – – 5 6 – 17 12 – 1 – – 18 2 8 – 3 – – 4 22 – – – –
3rd, 1810 1813 182 – – – – – – 7 2 – 6 – – – – – – 10 1 – 9 20 – – – – – – – 6 6 – 27 13 – 6 – – 23 2 9 – 6 – – 6 23 – – – –
4th, 1820 1823 213 3 – – – – – 6 1 – 7 – – 1 3 – – 12 3 7 9 13 – – 1 1 – – – 6 6 – 34 13 – 14 – – 26 2 9 – 9 – – 5 22 – – – –
5th, 1830 1833 240 5 – – – – – 6 1 – 9 – – 3 7 – – 13 3 8 8 12 – – 2 2 – – – 5 6 – 40 13 – 19 – – 28 2 9 – 13 – – 5 21 – – – –
6th, 1840 1843 223 7 – – 1 – – 4 1 – 8 – – 7 10 – – 10 4 7 6 10 3 – 4 5 – – – 4 5 – 34 9 – 21 – – 24 2 7 – 11 – – 4 15 – – – –
7th, 1850 1853 234 7 – – 2 2 – 4 1 1 8 – – 9 11 2 – 10 4 6 6 11 4 – 5 7 – – – 3 5 – 33 8 – 21 – – 25 2 6 – 10 2 – 3 13 – – 3 –
8th, 1860 1863 241 6 – – 3 3 – 4 1 1 7 – – 14 11 6 1 9 5 5 5 10 6 2 5 9 – – – 3 5 – 31 7 – 19 – 1 24 2 4 – 8 4 – 3 11 – – 6 –
9th, 1870 1873 292 8 – – 4 4 – 4 1 2 9 – – 19 13 9 3 10 6 5 6 11 9 3 6 13 – 1 1 3 7 – 33 8 – 20 – 1 27 2 5 – 10 6 – 3 9 – 3 8 –
10th, 1880 1883 325 8 – – 5 6 1 4 1 2 10 – – 20 13 11 7 11 6 4 6 12 11 5 7 14 – 3 1 2 7 – 34 9 – 21 – 1 28 2 7 – 10 11 – 2 10 – 4 9 –
11th, 1890 1893 356 9 – – 6 7 2 4 1 2 11 – 1 22 13 11 8 11 6 4 6 13 12 7 7 15 1 6 1 2 8 – 34 9 1 21 – 2 30 2 7 2 10 13 – 2 10 2 4 10 1
Census Effected Size AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY
12th, 1900 1903 386 9 – – 7 8 3 5 1 3 11 – 1 25 13 11 8 11 7 4 6 14 12 9 8 16 1 6 1 2 10 – 37 10 2 21 – 2 32 2 7 2 10 16 1 2 10 3 5 11 1
13th, 1910 1913 435 10 – 1 7 11 4 5 1 4 12 – 2 27 13 11 8 11 8 4 6 16 13 10 8 16 2 6 1 2 12 1 43 10 3 22 8 3 36 3 7 3 10 18 2 2 10 5 6 11 1
14th, 1920 Congress failed to pass any reapportionment act. Distribution of seats from 1913 remained in effect, despite population shifts.
15th, 1930 1933 435 9 – 1 7 20 4 6 1 5 10 – 2 27 12 9 7 9 8 3 6 15 17 9 7 13 2 5 1 2 14 1 45 11 2 24 9 3 34 2 6 2 9 21 2 1 9 6 6 10 1
16th, 1940 1943 435 9 – 2 7 23 4 6 1 6 10 – 2 26 11 8 6 9 8 3 6 14 17 9 7 13 2 4 1 2 14 2 45 12 2 23 8 4 33 2 6 2 10 21 2 1 9 6 6 10 1
17th, 1950 1953 435 9 – 2 6 30 4 6 1 8 10 – 2 25 11 8 6 8 8 3 7 14 18 9 6 11 2 4 1 2 14 2 43 12 2 23 6 4 30 2 6 2 9 22 2 1 10 7 6 10 1
18th, 1960 1963 435 8 1 3 4 38 4 6 1 12 10 2 2 24 11 7 5 7 8 2 8 12 19 8 5 10 2 3 1 2 15 2 41 11 2 24 6 4 27 2 6 2 9 23 2 1 10 7 5 10 1
19th, 1970 1973 435 7 1 4 4 43 5 6 1 15 10 2 2 24 11 6 5 7 8 2 8 12 19 8 5 10 2 3 1 2 15 2 39 11 1 23 6 4 25 2 6 2 8 24 2 1 10 7 4 9 1
20th, 1980 1983 435 7 1 5 4 45 6 6 1 19 10 2 2 22 10 6 5 7 8 2 8 11 18 8 5 9 2 3 2 2 14 3 34 11 1 21 6 5 23 2 6 1 9 27 3 1 10 8 4 9 1
21st, 1990 1993 435 7 1 6 4 52 6 6 1 23 11 2 2 20 10 5 4 6 7 2 8 10 16 8 5 9 1 3 2 2 13 3 31 12 1 19 6 5 21 2 6 1 9 30 3 1 11 9 3 9 1
22nd, 2000 2003 435 7 1 8 4 53 7 5 1 25 13 2 2 19 9 5 4 6 7 2 8 10 15 8 4 9 1 3 3 2 13 3 29 13 1 18 5 5 19 2 6 1 9 32 3 1 11 9 3 8 1
23rd, 2010 2013 435 7 1 9 4 53 7 5 1 27 14 2 2 18 9 4 4 6 6 2 8 9 14 8 4 8 1 3 4 2 12 3 27 13 1 16 5 5 18 2 7 1 9 36 4 1 11 10 3 8 1
Census, Year Effected Size AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

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