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Research Guides

U.S. Decennial Census: 1930

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

About the 1930 census


  • 15th decennial census
  • US population: 122,775,046
  • Washington population: 1,563,396
  • Mexicans are given a separate classification in the census returns for the first time in 1930, having been included for the most part with the white population at prior censuses

Questions asked

Address; name; relationship to head of family; sex; race; age; marital status; age at first marriage; home owned or rented; value or monthly rental; radio set; whether family lives on a farm; school attendance; literacy; place of birth of person and parents; if foreign born , language spoken in home before coming to U.S; year of immigration; naturalization; ability to speak English; occupation, industry, and class of worker; whether at work previous day (or last regular working day); veteran status ; for Indians, whether of full or mixed blood, and tribal affiliation. Supplemental schedules for gainful workers not at work on the day preceding the enumeration; blind and deaf-mutes.

For more information:


Original printed reports (& online equivalents)

Print Versions in the Library

Online Versions

Vol I: Number and distribution of Inhabitants
[HA201 1930 .F54 1931 v.1, Microfilm A4912]

From the Census Bureau

Vol II: General Report
[HA201 1930 .F54 1931 v.2Microfilm A4912]

From the Census Bureau

Vol III: Reports by states (2 pts)
[HA201 1930 .F54 1931 v.3Microfilm A4912]

From the Census Bureau

Vol III: Reports by states Washington State
[HA201 1930 .F54 1931 v.3 
pt.Wash.Microfilm A4912]

From the Census Bureau

Vol IV: Occupation Statistics
[HA201 1930 .F54 1931 v.4Microfilm A4912]

From the Census Bureau

Vol V: General Report on Occupations
[HA201 1930 .F54 1931 v.5Microfilm A4912]

From the Census Bureau

Vol VI: Families
[HA201 1930 .F54 1931 v.6Microfilm A4912]

From the Census Bureau

Vol VI: Foreign-Born White Families
[HA201 1930 .F54 1931 v.6 suppl.Microfilm A4912]

From the Census Bureau

Vol VIII: Metropolitan Districts
[HA201 1930 .F54 1931 v.7Microfilm A4912

From the Census Bureau

Vol VIII: Outlying Territories and Posessions
[HA201 1930 .F54 1931 v.8Microfilm A4912

From the Census Bureau

[HA201 1930 .A3 U6 1931 v.1, v.2]

From the Census Bureau

[HA201 1930 .A27 1933]

From the Census Bureau

Population: Panama Canal Zone
[C 3.37/30:Ag 82 p 


The Indian Population of the United States and Alaska
[317.3 Un31i 1930, E77 .U5 1937, 970.1 Un32f]   


A Social-Economic Grouping of the Gainful Workers
[331.7 Un3s, C 3.2:S 13]  

From the Census Bureau

Multi-year census compilations (compare across years)

These tend to include statistics for large geographic areas (eg states) but can be very useful when comparing statistics over time.

See: list of all census compilations

Guides and Documentation

Encyclopedia of the U.S. Census.                 (GovPub Reference HA 37 .U55 C66 2000)
See the entry under "decennial census". Includes bibliography for each census.

See: list of all Guides and Documentation

Raw Data Files

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

See: list of raw data sources

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.


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).