{"uid":"cap_qoiI6JpYxnNgxPzXw88zj","slug":"saylor-innovations-us-fips-geocoder-f819190b","name":"Saylor Innovations US FIPS Geocoder","description":"Convert US coordinates to state, county, census tract and census block FIPS codes with 2020 block population, using the FCC Area API","url":"https://saylorinnovations.com/api/geo/us-fips?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["lat","lon"],"properties":{"lat":{"type":"string","description":"Latitude in decimal degrees (US)"},"lon":{"type":"string","description":"Longitude in decimal degrees"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["location","county"],"properties":{"state":{"type":"object","description":"State or region"},"county":{"type":"object","description":"County"},"source":{"type":"string","description":"Data source the values come from"},"location":{"type":"object","description":"Place the data refers to"},"census_year":{"type":["string","null"],"description":"Census year"},"census_block_fips":{"type":"string","description":"Census block fips"},"census_tract_fips":{"type":"string","description":"Census tract fips"},"block_population_2020":{"type":["number","null"],"description":"Block population 2020"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YJQL5h1WNHjM4lbHMfHVg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts US latitude/longitude coordinates to state, county, census tract, and census block FIPS codes, with 2020 census block population, via the FCC Area API","exampleAgentPrompt":"What are the census tract and block FIPS codes for the location at latitude 38.8977 and longitude -77.0365, and what was the 2020 block population there?","exampleUseCases":[{"title":"Enrich address data with census identifiers","prompt":"I have a US location at latitude 40.7128, longitude -74.0060 — can you give me the full FIPS breakdown: state, county, census tract, and block, plus the 2020 block population?"},{"title":"Compliance reporting by census geography","prompt":"Our grant application requires census tract and block FIPS codes for our service area. The site is at latitude 33.749 and longitude -84.388 — can you pull those for me?"},{"title":"Demographic analysis for a field research site","prompt":"I'm doing research at a site in rural Texas at lat 30.2672, lon -97.7431. What census tract and block is it in, and how many people lived in that block according to the 2020 census?"}],"resultDescription":"A JSON object containing the matched location's state object, county object, census tract FIPS code, census block FIPS code, 2020 block population count, census year, and the FCC data source attribution.","failureModes":["Coordinates outside the US will return no matching FIPS data","Invalid or non-numeric lat/lon values will cause a request error","Missing required lat or lon query parameters will result in a validation error","Points in US territories or offshore areas may not have census block data","FCC Area API upstream downtime may cause lookup failures"],"whenToPreferThis":"Choose this endpoint when you need authoritative US census geography identifiers (FIPS codes at the state, county, tract, and block level) for a given coordinate, especially when 2020 block-level population is also needed. It is ideal for enriching address or GPS data with census units for compliance, demographic analysis, or geospatial reporting. Prefer it over general geocoding APIs when the specific output is FIPS codes rather than street addresses.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T12:52:44.537Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-us-fips-geocoder-f819190b"}