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County Population Estimates by Age, Sex, and Race [United States]: 1991 (ICPSR 6426)

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This data collection includes estimates of the resident population of the 3,141 counties in the United States as defined in the 1990 Census. Data are grouped by five-year age category (ages 0-4, 5-9, etc.), sex, and modified race (white, Black, other) for 1991. These estimates were developed by extrapolating from modified 1990 Census files.

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Study Description


U.S. Dept. of Commerce, Bureau of the Census. COUNTY POPULATION ESTIMATES BY AGE, SEX, AND RACE [UNITED STATES]: 1991. Washington, DC: U.S. Dept. of Commerce, Bureau of the Census [producer], 1994. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1994.

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Scope of Study

Time Period:  

  • 1991

Date of Collection:  

  • 1990

Universe:   All counties in the United States as identified in the 1990 Decennial Census.

Data Types:   census/enumeration data


Data Source:

self-enumerated questionnaires


Original ICPSR Release:  


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