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Contiguous County File (CCF)
This information is only for PRI affiliates
STIPULATIONS FOR USE: Access to files on PopNet limited to Penn State PRI researchers
DESCRIPTION: This file provides information on 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.
ORIGINATING AGENCY / PRINCIPAL INVESTIGATOR(S): United States Census Bureau
| Year(s) / Wave(s) | Abstract? | Data Location | Input Statement | Documentation Location |
| 1991 | Yes | POPNET: /nfs/data/public/census/ contig_cnty/da9835.gz | None at present | POPNET: /nfs/data/public/contig_cnty/cb9835 (use Word Pad to open documentation) To request hardcopy documentation |
DATA DISSEMINATED BY: ICPSR