The Census Bureau has published FIPS codes in census products for more than 30 years. ... FIPS codes for smaller geographic entities are usually unique within larger geographic entities. For example, FIPS state codes are unique within nation and FIPS county codes are unique within state.
Can a county have more than one FIPS code?
County FIPS Codes on the other hand are a five-digit number used to designate a specific county. A county will always be assigned a single FIPS code but the county may contain dozens of ZIP Codes.
How many FIPS codes are there?
The following sortable table lists the 3,242 counties and county equivalents of the United States and their respective FIPS codes.