New York City's open data program, one of the world's most comprehensive city portals, with rich geospatial datasets.
NYC Open Data is the City of New York's open data program, widely regarded as one of the most comprehensive municipal portals in the world. It publishes thousands of datasets from city agencies, mandated by local law.
For urban GIS it is exceptionally rich: building footprints, tax lots (PLUTO), zoning, 311 service requests, transportation, and detailed administrative geographies are all available, exportable as GeoJSON and Shapefile through a Socrata platform with full APIs.
PLUTO (Primary Land Use Tax Lot Output) is NYC’s extensive tax-lot dataset with land use and building attributes, a staple of New York urban analysis.
It is one of the largest and most mature municipal open data programs, backed by local legislation requiring agencies to publish data.
Yes. Every dataset exposes a Socrata API with filtering and GeoJSON export for spatial data.
Alaska's open data geoportal, providing authoritative statewide GIS layers for the largest U.S. state by area.
Lombardy's regional geoportal, the access point to the territorial information infrastructure of Italy's most populous region.
North Dakota's GIS Hub, providing authoritative shared statewide geospatial data and services.
New Jersey's geographic information network open data hub, providing authoritative statewide GIS layers, imagery, and parcels.
Maryland's state open data portal, publishing agency datasets including transportation, health, environment, and boundaries.
Piedmont's regional geoportal, the access point to the territorial data catalog and geoservices for the Italian region.
Bahrain's open data portal, a unified platform offering government datasets from over 35 entities since 2013.
Montana's geographic information program at the State Library, providing authoritative statewide framework GIS data.
© Atlas 2026 / Your all-in-one map builder