- About the 1970 census
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About the 1970 census
Highlights
- 19th decennial census
- US population: 203,302,031
- California population: 19,971,069
- The Summary Tape Files which were released were the first time tabulations were disseminated in electronic format.
Questions asked
Information obtained from all persons: Address; name; relationship to head of household; sex; race; age; month and year of birth; marital status; if American Indian, name of tribe.
Information obtained from 20-percent sample: Whether residence is on a farm; place of birth; educational attainment; for women, number of children ever born; employment status; hours worked in week preceding enumeration; year last worked; industry, occupation, and class of worker; state or country of residence 5 years ago; activity 5 years ago; weeks worked last year; earnings last year from wages and salary, from self-employment; other income last year.
Information obtained from 15-percent sample: Country of birth of parents; county, and city or town of residence 5 years ago ( and whether in city limits or outside); length of residence at present address; language spoken in childhood home; school or college attendance, and whether public, parochial, or other private school; veteran status; place of work--street address, which city or town (and whether in city limits or outside), county, State, ZIP code; means of transportation to work.
Information obtained from 5-percent sample: Whether of Spanish descent; citizenship; year of immigration; whether married more than once and date of first marriage; whether first marriage ended because of death of spouse; vocational training; (for persons of working age) presence and duration of disability; industry, occupation, and class of worker 5 years ago.
Supplemental schedule for Americans overseas.
For more information: