Convert US coordinates to state, county, census tract and census block FIPS code
Convert US coordinates to state, county, census tract and census block FIPS codes with 2020 block population, using the FCC Area API
Answers HTTP 404 without x402 payment termsour last check, 2026-10-18
0 of 1checks answered this week
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Endpoint
GET https://saylorinnovations.com/api/geo/us-fips
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | no x402 terms | 404 | 223 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"lat": "38.8977",
"lon": "-77.0365"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"properties": {
"lat": {
"description": "Latitude in decimal degrees (US)",
"type": "string"
},
"lon": {
"description": "Longitude in decimal degrees",
"type": "string"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"block_population_2020": {
"description": "Block population 2020",
"type": [
"number",
"null"
]
},
"census_block_fips": {
"description": "Census block fips",
"type": "string"
},
"census_tract_fips": {
"description": "Census tract fips",
"type": "string"
},
"census_year": {
"description": "Census year",
"type": [
"string",
"null"
]
},
"county": {
"description": "County",
"type": "object"
},
"location": {
"description": "Place the data refers to",
"type": "object"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"state": {
"description": "State or region",
"type": "object"
}
},
"required": [
"location",
"county"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}