City of Somerville, MA GIS Viewer

ESRI polygon feature class representing City of Somerville, Massachusetts building footprints. Last updated July 5, 2024.

ESRI polygon feature class representing the City of Somerville, Massachusetts open space areas including parks, playgrounds, recreation fields, community gardens, cemeteries, natural areas, and other open space types.

Polygon feature class representing the City of Somerville, Massachusetts zoning map adopted December 12, 2019 as part of the City of Somerville Zoning Overhaul (https://www.somervillezoning.com/). Last amended by City Council December 12, 2024 per Ordinance 2024-16. This dataset last updated April 4, 2025.

ESRI line feature class representing City of Somerville, Massachusetts street centerlines. Last updated November 4, 2024.

The MBTA finally completed the long-awaited Green Line extension (GLX) with the opening of several new stations through Somerville and Medford. While this is a benefit to many residents, others are beginning to notice potential consequences in the form of rent increases and threats of new development along the route. One neighborhood in particular, Ball Square (with a namesake Green Line station), is reacting to mixed-use development plans and street upgrades along Broadway, its main thoroughfare. Here, we map current conditions of the neighborhood and compare them to proposals, focusing on what might be lost and gained in the coming years, along with a traffic analysis and recorded concerns from business owners and residents.

ESRI polygon feature class representing the City of Somerville, Massachusetts city boundary.

ESRI line feature class representing City of Somerville, Massachusetts 1-foot contour intervals.

ESRI polygon feature class representing City of Somerville, Massachusetts fire response districts.

ESRI polygon feature class representing City of Somerville, Massachusetts neighborhood boundaries.

Georeferenced raster image dataset representing City of Somerville, Massachusetts, impervious surface areas.

ESRI point feature class representing City of Somerville, Massachusetts squares, hills and other commonly referenced locations.

ESRI point feature class representing City of Somerville, Massachusetts police station locations.

ESRI polygon feature class representing City of Somerville, Massachusetts administrative wards based on the 2020 Census.

ESRI point feature class representing City of Somerville, Massachusetts fire station locations.

ESRI polygon feature class representing City of Somerville, Massachusetts voter precincts based on the 2020 Census. Last updated September 22, 2023.

ESRI point feature class representing City of Somerville, Massachusetts street parking meters.

FY 2025 property tax parcels and related assessor's data as prepared for MassGIS using the MassGIS Level 3 GIS parcel standard.

Zip file containing the Spring 2015 MassOrtho color aerial imagery mosaic of Somerville in compressed Mr.SID format. 320 MB.

November 2023