Browse our narrative and historical materials for each of the 22 decennial (ten year) censuses, information and artifacts about the Census Bureau itself, its programs, and its technical achievements. Here you'll find historical information about the many aspects of census taking in the United States, including:
Featured Photograph
Herman Hollerith's electric tabulation machine, seen here in a 1904 photograph, was used to process data from the 1890 census. This was the first time an automatic counting device had been used to tabulate census returns, opening the door for future advances in data processing.
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In 1790, the first census of the United States began. Assistant U.S. Marshals took 18 months to complete the enumeration.
In 1861, the Census Office published a map showing the distribution of slaves in the American South in order to raise money for sick and wounded soldiers.