U.S. Census
1st 1790
2nd 1800
3rd 1810
4th 1820
5th 1830
6th 1840
7th 1850
8th 1860
9th 1870
10th 1880
11th 1890
12th 1900
13th 1910
14th 1920
15th 1930
16th 1940
17th 1950
18th 1960
19th 1970
20th 1980
21st 1990
22nd 2000
LCSH are of the pattern:
United States--Census, 4th, 1820