fips-county-codes (rubygems):   fips-county-code provides two hashes for converting between state and county pairs to FIPS codes.    The FIPS county code is a five-digit Federal Information Processing Standards (FIPS).    It uniquely identifies counties and county equivalents in the United States.   This may be useful to you if you are processing voter data. 
Keywords: fips|fips-180-4|voter|voter-file|voters