Decode any US FIPS code
Enter a 2-digit state code, 5-digit county code, MSA code, or a place name.
Browse by State
Most Populous Counties
Learn About FIPS Codes
What is a FIPS Code?
The origin, structure, and meaning of Federal Information Processing Standard codes.
FIPS Codes in Federal Datasets
How Census, BLS, EPA, HUD, USDA, and other agencies use FIPS as their geographic key.
Complete State FIPS Code List
All 56 US states and territories with their official 2-digit FIPS codes.
Complete County FIPS Code List
All 3,000+ US counties and county equivalents with their 5-digit FIPS codes.
FIPS Codes vs ZIP Codes
Why they're not the same, and how to convert between them using the HUD crosswalk.
FIPS Codes vs GEOID
How Census GEOIDs relate to FIPS codes and when they differ.
Zero-Padding FIPS Codes
How to fix the most common FIPS data-join bug in Python, R, and SQL.
Virginia Independent Cities
Virginia's 38 independent cities each have their own FIPS code — a common data trap explained.
County Equivalents
Louisiana parishes, Alaska boroughs, DC, Puerto Rico municipios — all county equivalents in federal data.