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

Version Date: Oct 31, 1992 View help for published

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United States. Bureau of the Census

Version V1

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.

United States. Bureau of the Census. Contiguous County File, 1991:  [United States]. Ann Arbor, MI: [distributor], 1992-10-31.

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

geographic reference data


2018-02-15 The citation of this study may have changed due to the new version control system that has been implemented. The previous citation was:
  • United States. Bureau of the Census. CONTIGUOUS COUNTY FILE, 1991: [UNITED STATES]. Washington, DC: United States. Bureau of the Census [producer], 1992. Ann Arbor, MI: Inter- university Consortium for Political and Social Research [distributor], 1992.


  • Data in this collection are available only to users at ICPSR member institutions.

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