GeoJSON

GeoJSON is a format for encoding a variety of geographic data structures.

{
  "type": "Feature",
  "geometry": {
    "type": "Point",
    "coordinates": [125.6, 10.1]
  },
  "properties": {
    "name": "Dinagat Islands"
  }
}

GeoJSON supports the following geometry types: Point, LineString, Polygon, MultiPoint, MultiLineString, and MultiPolygon. Geometric objects with additional properties are Feature objects. Sets of features are contained by FeatureCollection objects.

Learn More

See the full specification for more detail. See also https://datatracker.ietf.org/doc/draft-butler-geojson/, an Internet-Draft updating and clarifying the original specification.

IETF Geographic JSON Working Group

The Internet Engineering Task Force, in conjunction with the original specification authors, has formed the Geographic JSON WG to standardize the format. Work continues on GitHub at https://github.com/geojson/draft-geojson.