US Counties and FIPS
us-counties.x402tookit.com
Counties whose Census centroids are nearest a latitude and longitude, with great-circle distance. Not point-in-polygon.
- Category
- Service
- Networks
- BaseSolanaPolygonArbitrum
- Starting price
- $0.02
- Paid calls, 30 days
- 8
Paid endpoints
8 endpoints, sorted by usage. Prices are per request.
| Endpoint | Price | Network | Facilitator | Calls / 30d |
|---|---|---|---|---|
GET/counties-by-population Rank US counties by July 2025 population estimate, nationally or within one state; largest or smallest first. | $0.02 | Base | Coinbase CDP | 1 |
GET/counties-in-state List a state's counties or county equivalents with FIPS, population and land area; resolves FIPS, postal code or name. | $0.02 | Base | Coinbase CDP | 1 |
GET/county-density Population density of a US county per square mile and km of land, with national and state rank and US average. | $0.02 | Base | Coinbase CDP | 1 |
GET/county-lookup US county by 5-digit FIPS or name plus state: name, area, population, density, centroid. Census Bureau data. | $0.02 | Base | Coinbase CDP | 1 |
GET/county-nearest-to-point Counties whose Census centroids are nearest a latitude and longitude, with great-circle distance. Not point-in-polygon. | $0.02 | Base | Coinbase CDP | 1 |
GET/county-search Search US counties by full or partial name, optionally within one state; ranked, capped at 50. | $0.02 | Base | Coinbase CDP | 1 |
GET/fips-parse-and-validate Split a county FIPS into state and county parts, check both exist, flag retired, legacy or zero-dropped codes. | $0.02 | Base | Coinbase CDP | 1 |
GET/state-summary State totals from county data: county count, land and water area, population, density, largest and smallest counties. | $0.02 | Base | Coinbase CDP | 1 |
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