Sources by State

Massachusetts

Amherst GIS
The Town of Amherst’s collection of GIS data.

City of Cambridge GIS Data
The City of Cambridge’s collection of GIS data.

Digital Commonwealth
The Boston Public Library’s platform for searching digital cultural heritage collections from a wide range of Massachusetts libraries, museums, historical societies, and archives. Searchable by map view. Collections include aerial photographs and historical maps.

MAPC Data Common
The Metropolitan Area Planning Council’s collection of GIS for the state of Massachusetts. Search data by category or by community profile.

MassGIS Data Hub
Hub for browsing the State of Massachusetts’ geospatial data layers, organized by data, apps, base layers.

MassGIS Data Layers
The State of Massachusetts’ one-stop-shop for interactive maps and geospatial data. Download specific data layers from the MassGIS collection.

MassGIS MassMapper
MassMapper is the Commonwealth’s online mapping tool for searching, displaying, and sharing spatial data for MA, launched in 2021. It replaces the previous mapping tool, OLIVER.

MassGIS Ocean Resource Information System (MORIS)
The Massachusetts Ocean Resource Information System (MORIS) is an online mapping tool for search, display, and share spatial data for MA’s coastal and ocean resources. 

MassGIS LiDAR Terrain Data
Download Light Detection and Ranging (LiDAR) terrain and elevation data for the entirety of Massachusetts. Also check out the Elevation Finder webmap for an interactive Lidar-querying experience.

Massachusetts Cultural Resource Information System (MACRIS)
Map viewer for displaying data from a range of sources, including the Massachusetts Historical Commission, MassGIS, and various base maps.

UMass Amherst Libraries William P. MacConnell Aerial Photograph Collection, ca. 1950-2000
Search the digitized collection of aerial photographs taken by William P. MacConnell and his photogrammetry students in the Department of Forestry at UMass. Use the link above to browse the entire collection (organized by county), or explore a web map of the 1951-52 series.