GIS and Spatial Data: New York City and State

NYC Open Data : Clearinghouse for data from all New York City agencies.  Much of this data in this collection is already in GIS friendly formats. 

BYTES of the Big Apple : Portal for the geographic datasets provided by the NYC Planning Department.  Includes tax lots (Mappluto), various boundaries and facilities, and official street centerline (LION) files.  

• LION - Direct download of street centerline files from 2015 with street and borough code address geolocators included

CoreData.nyc : Map based data hub for housing and neighborhood resources from NYU Furman Center for Real Estate and Urban Policy. 

NYPL Map Division

• Digital Gallery : Digital collections include a wide-array of scanned maps. 

GeoData@Columbia : A wide variety of NYC specific datasets and maps can be found in our own collections.

GIS.NY.GOV - Spatial data clearinghouse for all state and county agencies. NOTE: much of this disparate collection is password protected and may require an appointment with DSSC staff for access. Contact us at data@library.columbia.edu

New York State Open Data - Data depot for NYS agencies, some of the data is GIS ready.

Cornell University Geospatial Information Repository (CUGIR) - CUGIR is an active online data and metadata repository and a participating node in the National Spatial Data Infrastructure program.