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Close API

Travel times from every US census block to nearby points of interest, by walking, biking, and public transit. The data behind close.city, as a metered, read-only JSON API.

Try any endpoint in the browser with the interactive API console.

  • Travel times from every US census block to nearby points of interest, by walk, bike, and transit, capped at 30 minutes.
  • Isochrones: the area reachable from (or that can reach) a block within a time budget, as GeoJSON contours or a block list.
  • Points of interest: search by location, with catchments and per-POI times.
  • A free catalog of modes, destination types, and data vintages.

Keys are managed at account.close.city.

Signing up for API use is free. Create an account with your email at account.close.city, and you receive a one-time grant of 5,000 tokens, with no card required.

The API is metered with prepaid tokens: one token per returned row, minimum one per request. See Metering for the rules and the balance headers. You can buy more token packs at any time.

Close+ is the $10/month membership for the close.city map. It grants 10,000 API tokens each paid month on top of everything it adds to the map, so if you use both, it is usually the cheapest way to keep a balance topped up. Cancel anytime.