About the 1930 census


  • 15th decennial census
  • US population: 122,775,046
  • California population: 5,677,251
  • 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:

Guides & Documentation

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

See: list of all Guides and Documentation


Original printed reports (& online equivalents)

Print Versions in the Library

Online Versions

Vol I: Number and distribution of Inhabitants
[C 3.14:930/7/v.1]

From the Census Bureau

Vol II: General Report
[C 3.14:930/7/v.2]

From the Census Bureau

Vol III: Reports by states (2 pts)
[C 3.14:930/7/v.3/pt1&pt.2]

From the Census Bureau

Vol IV: Occupation Statistics
[C 3.14:930/7/v.4]

From the Census Bureau

Vol V: General Report on Occupations
[C 3.14:930/7/v.5]

From the Census Bureau

Vol VI: Families
[C 3.14:930/7/v.6]

From the Census Bureau

Vol VII: Foreign-Born White Families
[C 3.14:930/7/v.7/reprint]

From the Census Bureau

Outlying Territories and Posessions
[C 3.14:930/8]

From the Census Bureau

[C 3.14:930/9/v.1&v.2]

From the Census Bureau

[C 3.14:930/10]

From the Census Bureau

Metropolitan Districts
[C 3.14:930/11/M 47]

From the Census Bureau

Population: Panama Canal Zone
[C 3.14:930/11/P 19]

From the Census Bureau

The Indian Population of the United States and Alaska
[C 3.14:930/11/P 47]

From the Census Bureau

A Social-Economic Grouping of the Gainful Workers
[C 3.14:930/11/P 87]

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

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.

  • Online version: Heritage Quest [UCSD only]
  • Microform version: Population schedule: California [XF 2689 reels 100-228]


Need help? Use the Ask-A-Librarian reference service, or call us at (858) 822-0450 during Reference Desk hours.