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Demographic FAQs

What day was the census taken each decade?

From 1790 to 1820, the censuses were conducted as of the first Monday in August (August 2, 1790; August 4, 1800; August 6, 1810; August 7, 1820); the 1830-1880 and 1900 censuses were as of June 1; the 1890 census was as of June 2; April 15 was Census Day in 1910; and the 1920 census was as of January 1. Since 1930, Census Day has been April 1.

1950 census interview
A homeowner takes a break from cutting the grass to be interviewed for the 1950 census.

Source: U.S. Census Bureau | Census History Staff | Last Revised: November 24, 2014