US Census Geocoder API: Address to Lat/Long, County & FIPS

Bulk-geocode US addresses to latitude/longitude plus county, census tract, block, FIPS/GEOID and congressional district with the official U.S. Census Geocoder. Free data. $1.80 per 1,000.

What does it do?

US Census Geocoder bulk-geocodes US addresses with the official U.S. Census Bureau Geocoder: latitude/longitude, matched address, plus county, census tract, block group and block, FIPS/GEOID codes and congressional district.

• ✅ Official public data source: no login, no cookies, no proxies
• ✅ Fast: plain API calls, typical runs finish in seconds
• ✅ Clean, flat JSON / CSV / Excel output, ready for Sheets, BI tools or AI agents
• ✅ Pay only for results: no monthly rental

Use cases

• Real estate & insurance: attach tract/FIPS for risk and demographics.
• Public health & research: join addresses to census data.
• CRM cleanup: standardize addresses.

How to use it

1. Click Try for free. The input is prefilled with a working example.
2. Edit the input (see examples below) and click Start.
3. Download results as JSON, CSV, Excel or HTML, or pull them via API.

Input examples

Two addresses

{
  "addresses": [
    "1600 Pennsylvania Ave NW, Washington, DC 20500",
    "200 E Colfax Ave, Denver, CO 80203"
  ]
}

Output

Sample rows:

input	matched	matchCount
1 Infinite Loop, Cupertino, CA 95014	False	0
1 Main St, Nowhere, XX	False	0
400 Broad St, Seattle, WA 98109	True	1

Sample JSON record (long fields shortened):

{
  "input": "1 Infinite Loop, Cupertino, CA 95014",
  "inputType": "address",
  "source": "U.S. Census Bureau Geocoder",
  "benchmark": "Public_AR_Current",
  "vintage": "Current_Current",
  "matched": false,
  "matchCount": 0
}

Pricing

Pay per event: $0.0018 per address geocoded ($1.80 per 1,000). No start fee, no monthly rental. Rows for not-found inputs and errors are free.

Results	Cost
100 address geocodeds	$0.18
1,000 address geocodeds	$1.80
10,000 address geocodeds	$18.00

Apify's free plan includes monthly platform credit, so you can try it at no cost.

Integrations

• Google Sheets: use Apify's Google Sheets integration, or import the dataset CSV link with =IMPORTDATA().
• Zapier & Make: trigger runs and receive the dataset via the official Apify apps.
• Webhooks & schedules: run daily or hourly and post results anywhere.
• AI agents (MCP): available to Claude, ChatGPT and other agents through the Apify MCP server.
• API & SDKs: call from Python, JavaScript or any HTTP client:

curl -X POST 'https://api.apify.com/v2/acts/clearpathdata~census-geocoder-fips/run-sync-get-dataset-items?token=<YOUR_API_TOKEN>' \
  -H 'Content-Type: application/json' \
  -d '{"addresses": ["1600 Pennsylvania Ave NW, Washington, DC 20500", "200 E Colfax Ave, Denver, CO 80203"]}'

FAQ

Non-US addresses?

No. US addresses only.

Data source?

U.S. Census Bureau Geocoder (public).

Something not working?

Open an issue on the Actor's Issues tab, and it will be fixed quickly.

More details

Bulk-geocode US addresses to latitude/longitude plus county, census tract, block, FIPS/GEOID and congressional district with the official U.S. Census Geocoder.

Geocode US addresses in bulk with the official U.S. Census Bureau Geocoder and get, for each address, latitude/longitude, the standardized matched address, and the full Census geography: state and county FIPS, census tract, block group, block GEOID, place, county subdivision, congressional district, state legislative districts, urban/rural flag, CSA and urban area. You can also reverse-geocode lat,long pairs to FIPS codes.

Uses: attach county/tract FIPS to customer or property lists, CRA/HMDA and fair-lending tract lookups, insurance and risk rating, joining to Census ACS/CBP demographics, sales territory mapping, political district lookups, cleaning CRM addresses.

Why this one: no Google/Mapbox key and no OpenStreetMap usage-policy limits. The data is public U.S. government data, and Census geography comes in the same call instead of a second lookup.

Output fields

input, matched, matchedAddress, latitude, longitude, zip, city, state, tigerLineId, side, stateFips, stateName, countyFips (5-digit GEOID), countyName, tractGeoid, tractName, blockGroupGeoid, blockGeoid, urbanRural, placeGeoid, placeName, countySubdivision, congressionalDistrictGeoid, congressionalDistrict, stateUpperDistrict, stateLowerDistrict, csaName, urbanAreaName, benchmark, vintage.

Notes

Coverage is US addresses only (the 50 states, DC and Puerto Rico); the matcher interpolates along Census TIGER address ranges, so it does not return rooftop points. Unmatched addresses come back as matched: false and are free. Source: geocoding.geo.census.gov (public U.S. Census Bureau service). Not affiliated with or endorsed by the U.S. Census Bureau.

Pricing

Pay per event: address-geocoded at $0.0018 ($1.8 per 1,000). Charged per address or coordinate successfully matched to Census geography. You pay only for results; not-found and error rows are free. Apify platform usage is included.

Example input

{
  "addresses": [
    "1600 Pennsylvania Ave NW, Washington, DC 20500",
    "200 E Colfax Ave, Denver, CO 80203",
    "123 Nowhere Lane, Faketown, ZZ 00000"
  ],
  "coordinates": [
    "39.7392,-104.9903",
    "0,0"
  ]
}

Built by clearpathdata, a maker of official open-data Actors. Questions and feature requests are welcome in the Issues tab.