Overpass API

Maps & Geocoding

Overpass API is a read-only API that provides access to OpenStreetMap map data with powerful querying capabilities. ) based on specific criteria using the Overpass Query Language (OQL).

free

None

~1,000,000 requests/day (soft limit; see Terms of Use)

✗ Not Available

Best For

Developers needing custom-filtered OpenStreetMap data extraction

Pricing

Complementary to Nominatim API. Overpass queries specific map features, Nominatim does address/location search. Free and completely open. Self-hosted Overpass instances available for high-volume use. Used by Nigerian mapping and location-based service developers.

Key Highlights

  • Query OSM data by location, feature type, and criteria
  • Overpass Query Language (OQL) for complex queries
  • Real-time and historical OSM data access
  • Export as JSON, XML, CSV, or GeoJSON
  • Public instances and self-hosted options available

Required Access Documents

  • NoneOptional
    Free, open-source project — no signup or key required for basic use.

Use Cases

  • POI Extraction:Pull points of interest (shops, hospitals, schools) for a Nigerian city from OSM.
  • Geospatial Analysis:Extract road networks or building footprints for mapping apps.

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