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Contiguous County File, 1991: [United States] (ICPSR 9835)

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This file provides information on the locational relationship between counties (and statistically equivalent entities) in the United States. For purposes of this study, contiguous counties included those that were physically adjacent, those that were not physically adjacent but were connected by a major road, and those that were not physically adjacent but had significant economic ties. The file includes FIPS state and county codes, county names, and the type of relationship between contiguous counties.

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Study Description


U.S. Dept. of Commerce, Bureau of the Census. CONTIGUOUS COUNTY FILE, 1991: [UNITED STATES]. Washington, DC: U.S. Dept. of Commerce, Bureau of the Census [producer], 1992. Ann Arbor, MI: Inter- university Consortium for Political and Social Research [distributor], 1992. http://doi.org/10.3886/ICPSR09835.v1

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Scope of Study

Subject Terms:   counties, economics, FIPS codes, geography

Geographic Coverage:   United States

Time Period:  

  • 1991

Universe:   Counties and statistically equivalent entities as recorded by the Census Bureau as of December 31, 1991.

Data Types:   geographic reference data



Original ICPSR Release:  

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