Massachusetts Counties, based on Survey Towns. Contains the 14 county polygons and a detailed coastline. Published as a map service from MassGIS' ArcGIS Server platform.See full metadata

April 2022

The 2020 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. County subdivisions are the primary divisions of counties and their equivalent entities for the reporting of Census Bureau data. They include legally-recognized minor civil divisions (MCDs) and statistical census county divisions (CCDs), and unorganized territories. In MCD states where no MCD exists or no MCD is defined, the Census Bureau creates statistical unorganized territories to complete coverage. The entire area of the United States, Puerto Rico, and the Island Areas are covered by county subdivisions. The generalized boundaries of legal MCDs are based on those as of January 1, 2020 as reported through the Census Bureau's Boundary and Annexation Survey (BAS). The generalized boundaries of all CCDs, delineated in 21 states, are those as reported as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

Be certain to read the MassGIS methodology to fully understand how these areas are identified.

The 2015 cartographic boundary KMLs are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. The records in this file allow users to map the parts of Urban Areas that overlap a particular county. After each decennial census, the Census Bureau delineates urban areas that represent densely developed territory, encompassing residential, commercial, and other nonresidential urban land uses. In general, this territory consists of areas of high population density and urban land use resulting in a representation of the "urban footprint." There are two types of urban areas: urbanized areas (UAs) that contain 50,000 or more people and urban clusters (UCs) that contain at least 2,500 people, but fewer than 50,000 people (except in the U.S. Virgin Islands and Guam which each contain urban clusters with populations greater than 50,000). Each urban area is identified by a 5-character numeric census code that may contain leading zeroes. The primary legal divisions of most states are termed counties. In Louisiana, these divisions are known as parishes. In Alaska, which has no counties, the equivalent entities are the organized boroughs, city and boroughs, municipalities, and for the unorganized area, census areas. The latter are delineated cooperatively for statistical purposes by the State of Alaska and the Census Bureau. In four states (Maryland, Missouri, Nevada, and Virginia), there are one or more incorporated places that are independent of any county organization and thus constitute primary divisions of their states. These incorporated places are known as independent cities and are treated as equivalent entities for purposes of data presentation. The District of Columbia and Guam have no primary divisions, and each area is considered an equivalent entity for purposes of data presentation. The Census Bureau treats the following entities as equivalents of counties for purposes of data presentation: Municipios in Puerto Rico, Districts and Islands in American Samoa, Municipalities in the Commonwealth of the Northern Mariana Islands, and Islands in the U.S. Virgin Islands. The entire area of the United States, Puerto Rico, and the Island Areas is covered by counties or equivalent entities. The boundaries for counties and equivalent entities are as of January 1, 2010.

The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). Spatial data is georeferenced to the earth surface using the Transverse Mercator projected coordinate system and the North American Datum of 1983. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:6000.

This map service contains boundaries for the following types of public school districts:Local School - administered by a city or town school committee.Regional Academic - administered by a regional school committee.Regional Vocational Technical - administered by a regional vocational school committee.Independent Vocational and County Agricultural - administered by a board of trustees.Independent Public, including Commonwealth Charter Schools and Horace Mann Charter SchoolsDistrict information as of December 2, 2014, was obtained from the Massachusetts Department of Elementary and Secondary Education (ESE).For full metadata see https://www.mass.gov/info-details/massgis-data-public-school-districtsMap service also available.

Essex County, MA has a B wealth grade. Median household income: $99,514. Unemployment rate: 5.1%. Income grows 4.9% yearly.

Hampden County, MA has a C wealth grade. Median household income: $70,196. Unemployment rate: 6.0%. Income grows 4.6% yearly.

These data are the lidar points collected for FEMA Risk Mapping, Assessment, and Planning (Risk MAP) for the Merrimack River Watershed. This area falls in portions of Hillsborough, Belknap, Merrimack, Rockingham and Strafford counties in New Hampshire and portions of Essex, Middlesex and Worcester counties in Massachusetts. Using a Leica ALS60 LiDAR system, a total of 268 flight lines of hig...

The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). In addition to the preceding, required text, the Abstract should also describe the projection and coordinate system as well as a general statement about horizontal accuracy.

The West Chop Loop Self-Guided Tour is a collaborative effort of the Tisbury Open Space & Recreation Committee and the Martha's Vineyard Commission.This map provides a fully interactive map the West Chop Loop Self-Guided Tour story map. The loop was on-screen digitized in ArcPro based on the tour's points of interest. Trails for West Chop Woods are included along with the publicly accessible open spaces that are mentioned as part of this tour.The POIs only contain one photo. The photo's geotag info was used to geolocate the POIs.This map is shared with the public and linked on the Hub landing page for Tisbury's self-guided tours.Enjoy the tour and please be respectful of private property.

The 2022 cartographic boundary KMLs are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. The cartographic boundary files include both incorporated places (legal entities) and census designated places or CDPs (statistical entities). An incorporated place is established to provide governmental functions for a concentration of people as opposed to a minor civil division (MCD), which generally is created to provide services or administer an area without regard, necessarily, to population. Places always nest within a state, but may extend across county and county subdivision boundaries. An incorporated place usually is a city, town, village, or borough, but can have other legal descriptions. CDPs are delineated for the decennial census as the statistical counterparts of incorporated places. CDPs are delineated to provide data for settled concentrations of population that are identifiable by name, but are not legally incorporated under the laws of the state in which they are located. The boundaries for CDPs often are defined in partnership with state, local, and/or tribal officials and usually coincide with visible features or the boundary of an adjacent incorporated place or another legal entity. CDP boundaries often change from one decennial census to the next with changes in the settlement pattern and development; a CDP with the same name as in an earlier census does not necessarily have the same boundary. The only population/housing size requirement for CDPs is that they must contain some housing and population. The generalized boundaries of most incorporated places in this file are based on those as of January 1, 2022, as reported through the Census Bureau's Boundary and Annexation Survey (BAS). The generalized boundaries of all CDPs are based on those delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

Franklin County, MA has a B wealth grade. Median household income: $72,102. Unemployment rate: 6.2%. Income grows 3.6% yearly.

March 2024

Hampshire County, MA has a C wealth grade. Median household income: $86,828. Unemployment rate: 5.1%. Income grows 4.8% yearly.

These data are the lidar points collected for FEMA Risk Mapping, Assessment, and Planning (Risk MAP) for the Nashua River Watershed. This area falls in portions of Hillsborough County in New Hampshire and portions of Middlesex and Worcester counties in Massachusetts. Using a Leica ALS60 LiDAR system, a total of 35 flight lines of high density (Nominal Pulse Spacing of 2.0 m) were collected over...

Bitly Link for this page: https://bit.ly/mvcfloodcompareAll datasets presented here are compiled by organizations other than the Martha's Vineyard Commission (MVC). The MVC has simply pulled these datasets into one map viewer for ease of direct visual comparison. The MVC encourages the viewer of this map to do their due diligence and research to understand the wide array of methodologies used to model flood inundation and sea level rise.The 3 Flood Inundation datasets presented are: FEMA (100 year or 1% annual probability flood zone) as per Effective Year 2016 data release.Mass Coast - Coastal Flood Risk Model (presented as flood probability for 3 future time horizons)Storm Tide Pathways - Flood Inundation Extents based on Total Water Level (in feet) relative to MLLW. There's a separate data layer for each inundation plane in half foot increments from 2.5ft MLLW to 19.5ft MLLW.SLOSH - Hurricane Inundation - Worst Case ScenarioVarious Links to learn more about these datasets:FEMA 2016 Data for Dukes CountyCoastal Zone Management Viewer: Mass Coast - Coastal Flood Risk Model Mass Coast 2030 Flood RiskMass Coast 2050 Flood RiskMass Coast 2070 Flood RiskMass Coast FAQStorm Tide Pathways App and Storm Tide Pathways InfoSLOSH - produced by NOAA & NWS v3 June 2022 (high tide scenario)The legend for the Mass Coast (MC-FRM) data shows the:The Probabilities 0.1% (in coral color) to 100% (in dark blue) is the Probability of Inundation - which is the chance of becoming flooded at some point each year.Coast Flood Exceedance Probabilities shown in the legend display the modeled outputs ranging from 0.1% (0.001, otherwise known as the 1,000-year storm) to 100% (1.0), which corresponds to the one-year storm. -- The 100% probability level generally corresponds to the annual high water value (NOT the average high tide).

Other data on this map include Salt Marshes, Wetlands MassDEP, Wetland Migration SLAMM Model (year 2070 with high sea level rise), Parcel Lines, and Building Roofprints.

This dataset consists of tax parcels for Easton, Massachusetts. Tax parcels represent property boundaries for the purpose of tax assessment. Tax parcels are not an authoritative source of property boundaries. The authoritative record of property boundaries are recorded at the Bristol County Registry of Deeds. Only a professional land surveyor my produce a legally authoritative map of property boundaries.Assessor property values are for fiscal year 2026. Tax parcels include recorded plans and deeds through June 2025.Ownership information is updated the first Friday each month and may not reflect current ownership.This feature class contains redundant geometry in cases where there are multiple condominium units on a given tax parcel.

The bedrock geology of the Bellows Falls 7.5 x 15 minute quadrangle, Vermont and New Hampshire, consists of polydeformed Ordovician to Devonian metasedimentary, metavolcanic, and metaplutonic rocks of the Connecticut Valley trough, Bronson Hill anticlinorium (or Bronson Hill terrane), and the Central Maine terrane. Previous work in this area includes a 1:62,500-scale published map and text by Kruger (1946), state geologic maps of New Hampshire (Lyons and others, 1997) and Vermont (Ratcliffe and others, 2011), and various maps and reports presented largely as parts of field trip guidebooks (e.g., Thompson and Rosenfeld, 1979; Chamberlain and others, 1988; Spear, 1992; Thompson and others, 1993). Armstrong (1997) completed a provisional open-file map of the geology of the Vermont part of the Bellows Falls 7.5 x 15 minute quadrangle, which is incorporated and revised on this map based on additional field work. This study recognizes three major structural levels from west to east, lowest to highest: (1) autochthonous rocks of the Connecticut Valley trough (CVT); (2) allochthonous rocks of the New Hampshire sequence and Bronson Hill arc in the Monroe thrust sheet, including the Skitchewaug nappe; and (3) allochthonous rocks of the Fall Mountain thrust sheet or nappe. The CVT consists of metasedimentary and metavolcanic rocks of Devonian Gile Mountain and Waits River formations, which are located west of, and within splays of the Westminster West fault zone. The CVT rocks are largely greenschist facies with most rocks in the biotite to garnet zones. The Monroe thrust sheet carries transported New Hampshire sequence, and include rocks previously described as the Cornish and Skitchewaug nappes (Thompson and others, 1968), and now interpreted to be largely at the same structural level (Walsh and others, in press). These rocks reached greenschist to amphibolite facies, with the lower biotite grade rocks occurring to the west near the Connecticut River. The eastern side of the CVT and the western side of the Skitchewaug nappe are dissected and deformed by multiple strands of the sinistral Westminster-West fault (Armstrong, 1997; McWilliams and others, 2013), an Alleghanian structure. The largest strand is marked by a significant zone of phyllonites—derived from various adjacent rock types from within the CVT—and chlorite grade retrogression. In the fault zone west of the Connecticut River, higher grade metamorphic assemblages are retrograded, deformed, and truncated in this wide zone. The Skitchewaug nappe shows an internal west-to-east increase in metamorphic grade from garnet zone to staurolite zone to sillimanite + muscovite zone near the Alstead dome. The Skitchewaug nappe exposes Ordovician to Devonian rocks of the New Hampshire sequence: Ordovician Partridge Formation, Silurian Clough Quartzite, Silurian Fitch Formation, and Devonian Littleton Formation. The Alstead dome is cored by Ordovician Ammonoosuc Volcanics and intruded by Oliverian Plutonic Suite trondhjemitic to granitic gneisses. The Ammonoosuc Volcanics is comprised of various amphibolites and hornblende schists. A metatuff mapped at the top of the Ammonoosuc Volcanics along the western flank of the dome yielded a Sensitive High Resolution Ion Microprobe (SHRIMP) U-Pb zircon crystallization ages of 455 ± 11 (Merschat and others, 2015; Valley and others, 2015, in press). Gneisses of the Oliverian Plutonic Suite are separated into two bodies: a smaller body to the north (~1.5 km long) and larger body extending southward beyond the quadrangle border. SHRIMP U-Pb zircon crystallization ages from these bodies are 448 ± 7 Ma and 452 ± 6 Ma, respectively (Merschat and others, 2015; Valley and others, 2015, in press). Map-scale truncations, a metamorphic break (staurolite against biotite and garnet zones), and mylonitic fabrics indicate a fault along the west side of the Skitchewaug nappe, which is mapped as the Northey Hill thrust. The structurally highest nappe, Fall Mountain, is floored by the Brennan Hill thrust (BHT) and contains sillimanite zone and higher-grade Silurian Rangeley Formation intruded by the ~400 Ma Bethlehem Granodiorite (Merschat and others, 2015). The BHT truncates units of the Skitchewaug nappe and juxtaposes the Bethlehem Granodiorite and migmatitic, sillimanite + K-feldspar zone Rangeley Formation over staurolite zone rocks of the Skitchewaug nappe. Reduction in grain size and an increase in the amount of biotite and muscovite in the Bethlehem Gneiss occur near the BHT. Mineral lineations plunge southeast, and kinematic indicators and fold patterns support NW-directed transport. The Fall Mountain nappe may be a west-directed sheath fold, similar to the Skitchewaug nappe and other F1-nappe stage folds (Walsh and others, in press). 40Ar/39Ar muscovite and amphibole ages across the nappes suggest Devonian to Mississippian cooling of the Bronson Hill anticlinorium. Amphibole from the Skitchewaug nappe in a window through the Fall Mountain nappe yields the oldest age at ~380 Ma, while amphibole age spectra from the Alstead dome yield ages of ~330 Ma. Muscovite ages from the Fall Mountain nappe and the Littleton Formation in the Monroe nappe in Vermont yield ages of 316-335 Ma, while ages near the Alstead dome are younger, ~300 Ma. Collectively, the 40Ar/39Ar data suggest peak metamorphism in the Skitchewaug nappe prior to ~380 Ma followed by emplacement of the FM between 335–380 Ma. The Alstead dome may have formed at ~330 Ma or later, and local late fabrics and younger muscovite ages are probably related to late Alleghanian sinistral tectonics. 40Ar/39Ar muscovite ages from the Westminster-West fault zone indicate it is a sinistral Alleghanian fault at ~300 Ma (McWilliams et al., 2013). Extensional Mesozoic faults cut all structural levels. Mesozoic faults have normal dip-slip and strike-slip kinematics. Apatite fission track (AFT) data indicate that the brittle Ammonoosuc fault was active prior to about 100 Ma and experienced little to no re-activation in the Cretaceous, but other regionally significant older ductile faults such as the Northey Hill experienced late Cretaceous (less then 80 Ma) re-activation (Roden-Tice and others, 2009). Additional AFT data suggest some Cretaceous activity on regional brittle faults like the Grantham fault may have extended into the Paleocene (Schnalzer and others, 2015). Extensive brittle faults and slickensided foliation surfaces in the vicinity of the Westminster-West fault zone, especially along Interstate 91, attest to Mesozoic re-activation of earlier structures.