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Massachusetts Land Parcels (MAPC Parcel Database, October 2026 release)
Statewide land parcels for Massachusetts: 2,197,515 parcels with assessor attributes, compiled by MAPC from MassGIS standardized parcels and municipal assessor records. Coordinate system: Massachusetts State Plane, meters (EPSG:26986). Draws at 1:30,000 and closer.
Fields with more than one value: condominium buildings and similar parcels have several assessor records on one polygon. Fields ending in _L hold all of them, separated by semicolons. For filtering, symbolizing or counting, use the single-value fields instead: those ending in _M (for example ZONING_M, SITE_ADR_M), the MIN_ and MAX_ land use fields, and MN_STD_DES / MX_STD_DES for the standardized land use description. Using an _L field gives incorrect results for about one parcel in ten.
Known limitation: 26,047 parcels have no municipality ID (muni_id) in this release, mostly right-of-way and water polygons. They do not appear when filtering by town. This will be corrected in the next release.
Use: this service is for maps, apps and lookups. It is read only and returns at most 2,000 records per request. Per-municipality downloads for bulk use are coming soon.
Credit: parcel data from MassGIS and Massachusetts municipal assessors, compiled by the Metropolitan Area Planning Council (MAPC). Provided as is, without warranty. Questions: MAPC Data Services. |
| summary:
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Massachusetts Land Parcels (MAPC Parcel Database, October 2026 release)
Statewide land parcels for Massachusetts: 2,197,515 parcels with assessor attributes, compiled by MAPC from MassGIS standardized parcels and municipal assessor records. Coordinate system: Massachusetts State Plane, meters (EPSG:26986). Draws at 1:30,000 and closer.
Fields with more than one value: condominium buildings and similar parcels have several assessor records on one polygon. Fields ending in _L hold all of them, separated by semicolons. For filtering, symbolizing or counting, use the single-value fields instead: those ending in _M (for example ZONING_M, SITE_ADR_M), the MIN_ and MAX_ land use fields, and MN_STD_DES / MX_STD_DES for the standardized land use description. Using an _L field gives incorrect results for about one parcel in ten.
Known limitation: 26,047 parcels have no municipality ID (muni_id) in this release, mostly right-of-way and water polygons. They do not appear when filtering by town. This will be corrected in the next release.
Use: this service is for maps, apps and lookups. It is read only and returns at most 2,000 records per request. Per-municipality downloads for bulk use are coming soon.
Credit: parcel data from MassGIS and Massachusetts municipal assessors, compiled by the Metropolitan Area Planning Council (MAPC). Provided as is, without warranty. Questions: MAPC Data Services. |
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| title:
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Massachusetts_Land_Parcels |
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Map Service |
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["parcels","Massachusetts","MAPC","assessor"] |
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en-US |
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Massachusetts_Land_Parcels |
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NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001 |