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Address to Coordinates (US)
x402
Address to Coordinates (US) is a paid API for AI agents from data.tollkit.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Geocodes a US street address to latitude/longitude coordinates and returns detailed location metadata via the U.S. Census Bureau Geocoder
Price / call$0.002
Success—
StatusUnknown
How this service works
SEC filings and financials, IP lookup, US weather, airport delays, address geocoding and exchange rates. Other Tollkit tools are described at: https://extract.tollkit.dev/openapi.json, https://attest.tollkit.dev/openapi.json, https://web.tollkit.dev/openapi.json, https://chain.tollkit.dev/openapi.json.
Output
Returns a JSON object with the best-matched address including latitude, longitude, ZIP code, city, state, county name, county FIPS code, census tract, and the normalized matched address string. Also includes the full list of all matched candidates and the original input string. Backed by the U.S. Census Bureau Geocoder.
Example use cases
Pin delivery location on a map
“I need the exact latitude and longitude for 350 Fifth Avenue, New York, NY 10118 so I can drop a pin on the delivery map.”
Enrich address with census data
“Can you look up 123 Main Street, Springfield, IL 62701 and get me the census tract and county FIPS code for our demographic analysis?”
Validate and normalize customer address
“Check if '742 Evergreen Terrace, Springfield, OR 97477' is a real, matchable US address and give me back the standardized version with ZIP and state.”
Technical details
Endpoint
POSThttps://data.tollkit.dev/geocode?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need free, authoritative US address geocoding backed by Census Bureau data, especially when you also need census tract, county FIPS, or normalized address output. Prefer it over commercial geocoders when cost matters ($0.002/call) and US-only coverage is sufficient. Ideal for enriching address data with official government geographic identifiers.
Side effects
- No match found if address is outside the US or not in Census Bureau data
- Partial or ambiguous address may return multiple candidates or zero matches
- Non-US addresses will fail since the endpoint only covers US geography
- Malformed input without a house number may return no results
- Rural or very new addresses may not be in the Census benchmark data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | US street address with a house number. |
Output
Schema · Response
{
"type": "json",
"example": {
"best": {
"lat": 38.898703,
"lon": -77.035189,
"zip": "20500",
"city": "WASHINGTON",
"state": "DC",
"county": "District of Columbia",
"street": "PENNSYLVANIA AVE NW",
"state_name": "District of Columbia",
"county_fips": "11001",
"census_tract": "11001980000",
"matched_address": "1600 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20500"
},
"input": "1600 Pennsylvania Ave NW, Washington, DC 20500",
"notice": "This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.",
"source": "U.S. Census Bureau Geocoder (geocoding.geo.census.gov), Public_AR_Current benchmark",
"matches": [
{
"lat": 38.898703,
"lon": -77.035189,
"zip": "20500",
"city": "WASHINGTON",
"state": "DC",
"county": "District of Columbia",
"street": "PENNSYLVANIA AVE NW",
"state_name": "District of Columbia",
"county_fips": "11001",
"census_tract": "11001980000",
"matched_address": "1600 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20500"
}
],
"match_count": 1
}
}Tags
x402
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