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MassGIS Data: Wards and Precincts

January 2019
Wards and Precincts for Massachusetts cities and towns.
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Sample of Wards and Precincts Wards are geographic areas used by governments for local elections. These are then further divided into precincts, in which the polling locations for voting are held. In Massachusetts, only cities comprise both wards and precincts; municipalities designated as towns contain one or more precincts and no wards.

MassGIS obtained the data in September 2012 and edited the data in the fall of 2018 to update a few areas in Boston based on data from the city revised in 2016. The layer includes population values from the 2010 U.S. Census.

The layer is named WARDSPRECINCTS_POLY


Staff at the Massachusetts Secretary of the Commonwealth developed this layer with its contractor, DAPA Research, Inc. (Boston, MA) using Maptitude for Redistricting software. The City of Boston revised its boundaries in 2016. MassGIS projected the data and performed QA.


The Wards and Precincts layer's polygon attribute table contains the following fields:

WP_NAME Ward-precinct name, with city/town name
WARD Ward name (cities only)
PRECINCT Precinct name
DISTRICT Name of district (combination of Ward and Precinct separated by a hypen for cities; same as Precinct for towns)
POP_2010 2010 population
TOWN Name of city or town
TOWN_ID MassGIS city/town ID (1-351)
AREA_SQMI Area in square miles
AREA_ACRES Area in acres
YEAR Year that the boundary data was released by the U.S. Census Bureau (2012) or revised by the City of Boston (2016)


MassGIS will distibute a new version of this layer once processing is complete after the 2020 U.S. Census.

Modified Date
Release Date
Spatial / Geographical Coverage Location
MassGIS (Bureau of Geographic Information)
Contact Name
Contact Email
Public Access Level
Data Quality