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County FIPS codes, 1790 - 2010

a PSC Data Resource

Resource Source:Census Bureau


This is a useful resource, which provides historical information on the date of origin of counties and changes to its name and/or FIPS codes between 1790 and 2010. FIPS codes did not exist back in 1790 so these are normalized to 2010 codes.


FIPS codes, 1790 to 1990 [xls] (Source: )
FIPS codes, 1790 to 1990 [ascii] (Source: )
Significant changes to counties, 1970+ (Source: )

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