This map service contains both polygon and linear features for the boundaries of the Massachusetts State House of Representatives districts, which were signed into law on November 4, 2021, with Chapter 83 of the Acts of 2021. These boundaries began to be used with the fall 2022 elections and are based on demographic data from the 2020 U.S. Census.Member names from the results of the November 2022 election were populated in January 2023 and updated in February 2024. An update to the attributes due to a special election in the 6th Worcester District was added in June 2024.Member names from the results of the November 2024 election were populated in January 2025.See full metadataFeature service also available.

Northeastern United States Town Boundary data are intended for geographic display of state, county and town (municipal) boundaries at statewide and regional levels. Use it to map and label towns on a map. These data are derived from Northeastern United States Political Boundary Master layer. This information should be displayed and analyzed at scales appropriate for 1:24,000-scale data. The State of Connecticut, Department of Environmental Protection (CTDEP) assembled this regional data layer using data from other states in order to create a single, seamless representation of political boundaries within the vicinity of Connecticut that could be easily incorporated into mapping applications as background information. More accurate and up-to-date information may be available from individual State government Geographic Information System (GIS) offices. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)

January 2023

This political boundary layer is the most accurate representing the city and town boundaries in the Commonwealth of Massachusetts.This datalayer has been created from latitude and longitude coordinates found in the 68-volume Harbor and Lands Commission Town Boundary Atlas. This Atlas series, and updates since it was published, describes the legal boundary for each of the 351 municipalities in Massachusetts.
These coordinates were recorded from surveys of the location of each boundary marker around the periphery of each community. Each survey was tied into higher order monumented survey control points. The Atlases also include detailed descriptions of each community's boundary and location maps for each of the original boundary marker locations. The original surveys were conducted in the 1890s. The Atlas series was published in the early 1900s and has since been updated by the Survey Section of the Massachusetts Highway Department with changes as they are approved by the legislature.MassGIS staff collaborated closely with staff from the Survey Section during the development of this data layer. MassGIS staff keyed the coordinates into a database; that data entry was double-checked by staff from the Survey Section. Staff from the Survey Section then converted the latitude/longitude coordinates to the NAD83 datum and also created a version of the coordinates in state plane coordinates with units of meters. MassGIS used the state plane coordinates to "generate" points in ArcGIS. Boundary arcs from the existing USGS-derived municipal boundary data layer were then snapped to the survey-derived points. The differences between the municipal boundary arcs digitized from those on the USGS quads and those created by snapping to the survey-derived coordinates are typically plus or minus 12 feet, although these differences are sometimes less and sometimes more. Some municipal boundary arcs (about 15% of the total) follow the edge of a road or rail right-of-way or a stream or river channel. In these cases, the new boundary arcs were "heads up" digitized based on features visible on the statewide 1:5,000 color orthos from imagery flown in 2001. For communities with a coastal boundary, MassGIS collaborated with the Massachusetts Water Resources Authority and the Department of Environmental Protection to complete a 1:12,000 scale coastline.The boundaries are included in Esri's World Topographic Map through participation in its Community Maps program.City/Town names' labels are included in this service.(This service was published from a map document using the Web Mercator projection for the data frame.)For full metadata please see https://www.mass.gov/info-details/massgis-data-municipalities

Northeastern United States County Boundary data are intended for geographic display of state and county boundaries at statewide and regional levels. Use it to map and label counties on a map. These data are derived from Northeastern United States Political Boundary Master layer. This information should be displayed and analyzed at scales appropriate for 1:24,000-scale data. The State of Connecticut, Department of Environmental Protection (CTDEP) assembled this regional data layer using data from other states in order to create a single, seamless representation of political boundaries within the vicinity of Connecticut that could be easily incorporated into mapping applications as background information. More accurate and up-to-date information may be available from individual State government Geographic Information System (GIS) offices. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)

The symbology of the data in this hosted tile layer is optimized for display atop aerial (ortho) imagery. Tiles are available for levels 7 through 20.Map Features for imagery include:

Political Boundaries: Massachusetts cities and towns, counties and state border, MassGIS).Transportation: Massachusetts Department of Transportation (MassDOT) Roads (MassDOT, MassGIS); MBTA subway and Commuter Rail lines and stations (Central Transportation Planning Staff, MassGIS); Airports, Ferry Routes and Seaports (MassDOT); Airport Runways and Airfields (Massachusetts Emergency Management Agency (MEMA)).Infrastructure and Facilities: Lighthouses and Lights (Massachusetts Coastal Zone Management); Licensed Child Care Programs (Department of Early Education and Care); Schools (Pre-K-High School) (Massachusetts Department of Education, MassGIS); Colleges and Universities (MassGIS); Acute Care Hospitals and Non-acute Care Hospitals (Massachusetts Department of Public Health Office of Emergency Medical Services, CHIA); Libraries, Police Stations, Fire Stations, Town Halls, Places of Worship, Courthouses, Prisons, DCR Pools.This service is used in the MassGIS Image Basemap.

Northeastern United States State Boundary data are intended for geographic display of state boundaries at statewide and regional levels. Use it to map and label states on a map. These data are derived from Northeastern United States Political Boundary Master layer. This information should be displayed and analyzed at scales appropriate for 1:24,000-scale data. The State of Connecticut, Department of Environmental Protection (CTDEP) assembled this regional data layer using data from other states in order to create a single, seamless representation of political boundaries within the vicinity of Connecticut that could be easily incorporated into mapping applications as background information. More accurate and up-to-date information may be available from individual State government Geographic Information System (GIS) offices. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)