U.S. Census Address Geocoder — Tract & Block API

Turn U.S. street addresses into standardized Census matches, coordinates, county FIPS codes, Census tract IDs, and Census block IDs using the official U.S. Census Bureau Geocoder.

Use it for geographic enrichment, CRM/data cleanup, real-estate research, demographic join preparation, address-to-Census mapping, and automated geocoding workflows.

Independent tool. Not affiliated with or endorsed by the U.S. Census Bureau. A Census address-range match is not USPS deliverability, occupancy, ownership, or identity verification.

Common use cases

• Convert street addresses into Census tract and block identifiers
• Add county/state FIPS and geography GEOIDs to records
• Prepare address datasets for demographic or geographic joins
• Standardize Census-matched addresses and coordinates
• Feed official Census geography identifiers into downstream analysis

What you get

One diagnostic/data row is kept per processed input address, preserving input order.

Statuses are matched, ambiguous, or not-found. Matched rows can include standardized address, coordinates, TIGER/Line identifiers, state/county FIPS, county name, Census tract, Census block, block group, plus a geographyIds map containing every returned layer GEOID.

Try it

{
  "addresses": ["1600 Pennsylvania Ave NW, Washington, DC 20500"],
  "includeGeographies": true,
  "maxConcurrency": 4,
  "maxRequestRetries": 2
}

Source

Official Census Geocoder REST service: https://geocoding.geo.census.gov/geocoder/

The current benchmark is Public_AR_Current. When geography enrichment is enabled, the Actor requests Current_Current geography and preserves returned GEOIDs.

No separate Census API key is required for this public geocoding service.

Important limitations

This Actor is intentionally narrow. It focuses on the join keys analysts, CRM workflows, real-estate pipelines and demographic-enrichment jobs usually need after geocoding.

It does not add postal validation, identity/ownership verification, a reverse-geocoding product, or unrelated enrichment. Census address-range matching should not be interpreted as proof of deliverability, occupancy, ownership, or identity.

Pricing

Target price: $0.25 per 1,000 matched geocodes ($0.00025 per matched or ambiguous result).

No-match diagnostic rows and legitimate zero-result summary rows are not billed. If the run's charge budget allows zero billable rows, the Actor stops before making Census requests.

About Piven Core

Built and maintained by Piven Core — focused data APIs and automation utilities for reliable, production-ready workflows.

Learn more: https://pivencore.com