GIS & Mapping

New York City government began using computer mapping in the late 1970s, with the Department of City Planning the first to employ a computer mapping system from Synercom Technologies running on a Digital Equipment Corporation (now Hewlett-Packard) PC. In January 2000 a GIS unit was established within DoITT to maintain and support an accurate digital map and geo-referenced New York City data, as well as to develop tools, services, and applications upon the data to better leverage this investment. Today, geospatial data is used throughout New York City government to support City operations, planning, data analysis, policy making, and public safety.


The GIS & Mapping unit also focuses on hosting and maintaining a centralized and highly accurate basemap, or planimetric basemap. This map provides the foundation for other geo-referenced data and associated APIs, including the application NYCityMap. In addition to looking up specific building addresses, users of NYCityMap can select from dozens of other data points such as schools, day care centers, senior centers, green markets, libraries, hospitals, public swimming pools, and more. All of the data in NYCityMap is also available on New York City’s Open Data Portal.

NYCityMap provides the City's wealth of GIS information to the public, and also provides access to many additional location-based applications on such as tax map, street closures, census, and zoning and land-use (ZoLa).

311 Service Request Map

The 311 Service Request Map provides the public with access to location-specific information about 311 complaints filed across 15 major categories, including air and water quality, construction, noise, quality of life, snow, streets and sidewalks, transit and parking and more. The map, part of 311 online and hosted on top of the basemap, shows all open and recently-closed Service Requests lodged across the City over the past year. Users can view a list of the service requests at a location and the steps taken to resolve the condition. 

3-D Building Model

A full city 3-dimensional model is available for download in multiple formats.  


The basemap of the City of New York. Maintained and distributed by NYC DoITT. Visit the Planimetrics database for details and links to download.