Free Batch Geocoding — U.S. Census Geocoder, No API Key Required

Geocode up to 1,000 addresses per run with lat/lng, matched address and quality — plus county, districts and timezone in the same pass.

How it works

  1. Open GeoFlow
  2. Paste your addresses (one per line) or upload a CSV and pick the address column
  3. Click Run — each address is matched against the free U.S. Census Bureau Geocoder
  4. Download the enriched CSV

Rate limits

The Census Geocoder asks for at most ~5 requests per second per IP. GeoFlow self-limits to 4/s and automatically falls back to a proxy path if direct access fails.

Try it free

Open GeoFlow — free during beta

Data source: U.S. Census Bureau Geocoder (public domain). Timezone: tz-lookup (MIT).

FAQ

Do I need an API key?

No. The Census Geocoder is free and keyless.

How fast is it?

About 4 addresses per second — 1,000 addresses take roughly 4 minutes.