The USGenWeb Census Project
The USGenWeb Census Project
Intro to Federal Census Research

1820 Census Facts
Series: M33 Rolls: 1 - 142.

  • Fourth U.S. decennial population census.
  • U.S. population: 9.6 million (8.1 million free, 1.5 million slave)
  • Census conducted by U.S. marshals under the direction of the Secretary of State.
  • Census day: 1st Monday in August (7 August 1820).
  • Mandated copies: One set, sent to the federal district court. Same copy ordered sent to the U.S. Secretary of State in 1830.
Information Provided on 1820 Census:
  • Name of family head
  • age
  • sex
  • race
  • foreigners not naturalized
  • slaves
  • industry (agriculture, commerce, and manufactures).

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