OpenStreetMap

OpenStreetMap Nominatim Geocoding API

Nominatim is the OpenStreetMap geocoding API providing search (forward geocoding), reverse geocoding, and address lookup for OSM objects. Rate limit is 1 request/second for the public instance. Requires valid User-Agent header. Open source under GNU GPL v3; self-hosted deployment available for higher volume needs.

GitHub OpenAPI

Documentation

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Documentation
https://nominatim.org/release-docs/latest/api/Overview/
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RateLimits
https://operations.osmfoundation.org/policies/nominatim/

Specifications

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OpenAPI
https://raw.githubusercontent.com/api-evangelist/openstreetmap/refs/heads/main/openapi/openstreetmap-nominatim-openapi.yml

OpenAPI Specification

openstreetmap-nominatim-openapi.yml Raw ↑