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Understanding the Geographic Coding in the 1970 Decennial Census Microdata

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  • Todd Gardner

Abstract

The geographic coding used in the 1970 decennial census can be challenging to interpret. The internal microdata includes geographic coding that is readily comparable to later censuses, the geographic coding used place of work and migration in the 1970 sample data is more complicated. The 1970 census was the last that made use of Universal Area Codes (UAC), which combined counties with selected places and Minor Civil Divisions into a single coding system. The UAC codes also indicated central business districts of large cities. This technical note describes how to interpret the place of work and migration variables and convert the information into more readily comparable geographic codes.

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  • Todd Gardner, 2020. "Understanding the Geographic Coding in the 1970 Decennial Census Microdata," CES Technical Notes Series 20-01, Center for Economic Studies, U.S. Census Bureau.
    • Handle: RePEc:cen:tnotes:20-01
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    Keywords

    Decennial Census;

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