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Census Research Guide: 2010

About the 2010 Census

Census Bureau's "By Decade" website

Includes a variety of publications, questionnaires, datasets, and more


  • 23rd decennial census
  • US population: 308,745,538
  • California population: 37,253,956
  • Long form (sample data) discontinued, replaced by the American Community Survey (ACS)

Questions asked (see questionnaire)

Information obtained from all persons: Age, Sex, Race, Hispanic or Latino origin, Household relationship, Tenure (housing unit owned or rented), Vacancy characteristics


Find all 2010 census publications in the Library.

Key publications:

Print available in the Library

Online access

Summary Population and Housing Characteristics

 Census Bureau

Population and Housing Unit Counts
[ C 3.223/5:2010-CPH-2- ] 

 Census Bureau


Original electronic files released:


Online access

Census 2010 redistricting data (Public Law 94-171)

 Census Bureau

Summary file 1
[ C 3.282:2010/DISC 1-2/DVD ]

 Census Bureau

Summary file 2

 Census Bureau