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Research Guides

U.S. Decennial Census: Census by Decade

Decade by decade information about how to access and use U.S. Census reports.

1790 Census Form

1790 census form

Image courtesy of the U.S. Census Bureau.

Guide to Census Research

The Decennial Census has been taken every ten years since 1790. It provides a wealth of information about the population.

Go directly to a census year:



Need help?  Call the Government Publications, Maps, Microforms & Newspapers help desk at (206) 543-4164 during desk hours.

You can also consult the Ask Us! reference service (24/7).