This is from Treasures of the Past
Census Dates
1790 - First Monday of August 1790 (August 2nd)
1800 - First Monday of August 1800 (August 4th)
1810 - First Monday of August 1810 (August 6th)
1820 - First Monday of August 1820 (August 7th)
1830 - June 1, 1830
1840 - June 1, 1840
1850 - June 1, 1850
1860 - June 1, 1860
1870 - June 1, 1870
1880 - June 1, 1880
1890 - First Monday of June 1890 (June 1)
1900 - June 1, 1900
1910 - April 15, 1910
1920 - April 1, 1920
1930 - April 1, 1930
1940 - April 1, 1940
1950 - April 1, 1950
1960 - April 1, 1960
1970 - April 1, 1970
1980 - April 1, 1980
1990 - April 1, 1990
2000 - April 1, 2000
