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Census Research Guide: 1820

For more info...

Raw Data Files

These are computer files intended to be loaded into statistical software for analysis and creating your own tables. In some cases these files can be used with spreadsheet software as well.

Population Schedules

Census population schedules (or "name schedules" or "manuscript census") are copies of the original questionnaires collected during each decennial census. They list the individual names and family information of the people enumerated. Unlike the statistics published soon after the census, the population schedules remain confidential for 72 years. 1930 is the most recent population schedule available.


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About the 1820 census


  • 4th decennial census
  • US population: 9,638,453
  • First census to ask about occupation/employment

Questions asked

Name of head of family; age; sex; race; foreigners not naturalized; slaves; industry (agriculture, commerce, and manufactures).

For more information:

Map coverage of the 1820 census



Find all 1820 census publications in the Library.


Multi-year census compilations (compare across years): These sources tend to include statistics for large geographic areas (e.g. states), but can be very useful when comparing statistics over time.

Key publications:

Print available in the Library

Online access

Census for 1820
[C 3.14:820/1 and C 3.14:820/1/reprint and HA201 1820]

From the Census Bureau


Digest of accounts of manufacturing establishments in the United States, and of their manufactures
[C 3.14:820/2/reprint]