FIPS County Code Lookup
Look up US county FIPS codes by code, county name, or state. 3,231 counties across all 50 states, DC, and territories. Used by mortgage, title, and GIS professionals.
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API Pricing
Free
- 100 lookups/day
- 10 req/min
- Batch up to 10 codes
- All endpoints
Starter
- 1,000 lookups/day
- 30 req/min
- Batch up to 50 codes
- Priority support
Pro
- 10,000 lookups/day
- 60 req/min
- Batch up to 100 codes
- Priority support
Frequently Asked Questions
What is a FIPS code?
FIPS (Federal Information Processing Standards) codes are 5-digit identifiers assigned to every US county and county-equivalent. The first 2 digits identify the state, the last 3 identify the county. For example, 06037 is Los Angeles County, California (06 = California, 037 = Los Angeles).
Who uses FIPS codes?
FIPS codes are used extensively in mortgage lending, title insurance, property appraisals, GIS mapping, census data analysis, and government reporting. Any system that needs to uniquely identify a US county uses FIPS codes.
How many counties are in the database?
The database contains 3,231 counties and county-equivalents across all 50 states, the District of Columbia, and US territories. This includes parishes (Louisiana), boroughs (Alaska), and independent cities (Virginia).
Is there a batch lookup API?
Yes. The API supports batch lookups of up to 10 FIPS codes per request on the free tier, and up to 100 on the Pro plan via POST /lookup/batch.
How current is the data?
The FIPS county data is sourced from the US Census Bureau and updated whenever new county definitions are published. County boundaries rarely change, so the data stays current for years.
Get your free API key
Integrate FIPS county lookups into your mortgage, title, or GIS application. Free tier includes 100 lookups/day.