sentences:  The FIPS county code is the five-digit Federal Information Processing Standard (FIPS) code which uniquely identifies counties and county equivalents in the United States.The three-digit number is unique to each individual county within a state, but to be unique within the entire United States, it must be prefixed by the state code.This means that, for example, while Addison County, Vermont is 001, Belknap County, New Hampshire and Alachua County, Florida are also 001.