Contiguous County File, 1991: [United States] (ICPSR 9835)
Principal Investigator(s): United States Department of Commerce. Bureau of the Census
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.
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
Persistent URL: http://doi.org/10.3886/ICPSR09835.v1
Scope of Study
Geographic Coverage: United States
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: 1992-10-31
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