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Census Research Guide: 1800

About the 1800 Census

Census Bureau's "By Decade" website - includes a variety of publications, questionnaires, datasets, and more


  • 2nd decennial census
  • US population: 5,308,483

Questions asked (see questionnaire)

In 1800, assistant marshals recorded the name of the county, parish, township, town, or city in which each family resided. Each family was listed by the name of the head of the household, and was asked the following questions:

  • The number of free White males and females aged, respectively:
    • under 10 years of age
    • of 10 years but under 16 years
    • of 16 years but under 26 years
    • of 26 years but under 45 years
    • 45 years and upward
  • Number of all other free persons
  • Number of slaves


For more information on this map:

Finding Statistics

Social Explorer - remote access limited to UCSD affiliates

Finding Publications

Find all 1800 census publications in the library catalog.

Selected publications:

Return of the whole number of persons within the several districts of the United States [C 3.14:800]

Second Census of the United States [C 3.14:800/reprint/x]