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 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.

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.

Counties (polygon features) for the Commonwealth of Massachusetts. Based on Community boundaries from survey data.

Boundaries and attributes for U.S. congressional districts (119th Congress, 2025–2027). Massachusetts subset visualized from national TIGER/Line-based NTAD holdings with member info appended from the U.S. House Clerk.

Effective January 2023.More information: Visit the Geographic Information System (GIS) webpage for access to additional City maps.Informing Worcester is the City of Worcester's open data portal where interested parties can obtain public information at no cost.

Boundaries of the eight Governor's Council districts for the Commonwealth of Massachusetts, as signed into law on November 22, 2021, with Chapter 92 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 based on the results of the November 2022 election were populated in January 2023.See full metadataMap service also available.

Reporting of Aggregate Case and Death Count data was discontinued May 11, 2023, with the expiration of the COVID-19 public health emergency declaration. Although these data will continue to be publicly available, this dataset will no longer be updated.

This archived public use dataset has 11 data elements reflecting United States COVID-19 community levels for all available counties.

The COVID-19 community levels were developed using a combination of three metrics — new COVID-19 admissions per 100,000 population in the past 7 days, the percent of staffed inpatient beds occupied by COVID-19 patients, and total new COVID-19 cases per 100,000 population in the past 7 days. The COVID-19 community level was determined by the higher of the new admissions and inpatient beds metrics, based on the current level of new cases per 100,000 population in the past 7 days. New COVID-19 admissions and the percent of staffed inpatient beds occupied represent the current potential for strain on the health system. Data on new cases acts as an early warning indicator of potential increases in health system strain in the event of a COVID-19 surge.

Using these data, the COVID-19 community level was classified as low, medium, or high.

COVID-19 Community Levels were used to help communities and individuals make decisions based on their local context and their unique needs. Community vaccination coverage and other local information, like early alerts from surveillance, such as through wastewater or the number of emergency department visits for COVID-19, when available, can also inform decision making for health officials and individuals.

For the most accurate and up-to-date data for any county or state, visit the relevant health department website. COVID Data Tracker may display data that differ from state and local websites. This can be due to differences in how data were collected, how metrics were calculated, or the timing of web updates.

Archived Data Notes:

This dataset was renamed from "United States COVID-19 Community Levels by County as Originally Posted" to "United States COVID-19 Community Levels by County" on March 31, 2022.

March 31, 2022: Column name for county population was changed to “county_population”. No change was made to the data points previous released.

March 31, 2022: New column, “health_service_area_population”, was added to the dataset to denote the total population in the designated Health Service Area based on 2019 Census estimate.

March 31, 2022: FIPS codes for territories American Samoa, Guam, Commonwealth of the Northern Mariana Islands, and United States Virgin Islands were re-formatted to 5-digit numeric for records released on 3/3/2022 to be consistent with other records in the dataset.

March 31, 2022: Changes were made to the text fields in variables “county”, “state”, and “health_service_area” so the formats are consistent across releases.

March 31, 2022: The “%” sign was removed from the text field in column “covid_inpatient_bed_utilization”. No change was made to the data. As indicated in the column description, values in this column represent the percentage of staffed inpatient beds occupied by COVID-19 patients (7-day average).

March 31, 2022: Data values for columns, “county_population”, “health_service_area_number”, and “health_service_area” were backfilled for records released on 2/24/2022. These columns were added since the week of 3/3/2022, thus the values were previously missing for records released the week prior.

April 7, 2022: Updates made to data released on 3/24/2022 for Guam, Commonwealth of the Northern Mariana Islands, and United States Virgin Islands to correct a data mapping error.

April 21, 2022: COVID-19 Community Level (CCL) data released for counties in Nebraska for the week of April 21, 2022 have 3 counties identified in the high category and 37 in the medium category. CDC has been working with state officials to verify the data submitted, as other data systems are not providing alerts for substantial increases in disease transmission or severity in the state.

May 26, 2022: COVID-19 Community Level (CCL) data released for McCracken County, KY for the week of May 5, 2022 have been updated to correct a data processing error. McCracken County, KY should have appeared in the low community level category during the week of May 5, 2022. This correction is reflected in this update.

May 26, 2022: COVID-19 Community Level (CCL) data released for several Florida counties for the week of May 19th, 2022, have been corrected for a data processing error. Of note, Broward, Miami-Dade, Palm Beach Counties should have appeared in the high CCL category, and Osceola County should have appeared in the medium CCL category. These corrections are reflected in this update.

May 26, 2022: COVID-19 Community Level (CCL) data released for Orange County, New York for the week of May 26, 2022 displayed an erroneous case rate of zero and a CCL category of low due to a data source error. This county should have appeared in the medium CCL category.

June 2, 2022: COVID-19 Community Level (CCL) data released for Tolland County, CT for the week of May 26, 2022 have been updated to correct a data processing error. Tolland County, CT should have appeared in the medium community level category during the week of May 26, 2022. This correction is reflected in this update.

June 9, 2022: COVID-19 Community Level (CCL) data released for Tolland County, CT for the week of May 26, 2022 have been updated to correct a misspelling. The medium community level category for Tolland County, CT on the week of May 26, 2022 was misspelled as “meduim” in the data set. This correction is reflected in this update.

June 9, 2022: COVID-19 Community Level (CCL) data released for Mississippi counties for the week of June 9, 2022 should be interpreted with caution due to a reporting cadence change over the Memorial Day holiday that resulted in artificially inflated case rates in the state.

July 7, 2022: COVID-19 Community Level (CCL) data released for Rock County, Minnesota for the week of July 7, 2022 displayed an artificially low case rate and CCL category due to a data source error. This county should have appeared in the high CCL category.

July 14, 2022: COVID-19 Community Level (CCL) data released for Massachusetts counties for the week of July 14, 2022 should be interpreted with caution due to a reporting cadence change that resulted in lower than expected case rates and CCL categories in the state.

July 28, 2022: COVID-19 Community Level (CCL) data released for all Montana counties for the week of July 21, 2022 had case rates of 0 due to a reporting issue. The case rates have been corrected in this update.

July 28, 2022: COVID-19 Community Level (CCL) data released for Alaska for all weeks prior to July 21, 2022 included non-resident cases. The case rates for the time series have been corrected in this update.

July 28, 2022: A laboratory in Nevada reported a backlog of historic COVID-19 cases. As a result, the 7-day case count and rate will be inflated in Clark County, NV for the week of July 28, 2022.

August 4, 2022: COVID-19 Community Level (CCL) data was updated on August 2, 2022 in error during performance testing. Data for the week of July 28, 2022 was changed during this update due to additional case and hospital data as a result of late reporting between July 28, 2022 and August 2, 2022. Since the purpose of this data set is to provide point-in-time views of COVID-19 Community Levels on Thursdays, any changes made to the data set during the August 2, 2022 update have been reverted in this update.

August 4, 2022: COVID-19 Community Level (CCL) data for the week of July 28, 2022 for 8 counties in Utah (Beaver County, Daggett County, Duchesne County, Garfield County, Iron County, Kane County, Uintah County, and Washington County) case data was missing due to data collection issues. CDC and its partners have resolved the issue and the correction is reflected in this update.

August 4, 2022: Due to a reporting cadence change, case rates for all Alabama counties will be lower than expected. As a result, the CCL levels published on August 4, 2022 should be interpreted with caution.

August 11, 2022: COVID-19 Community Level (CCL) data for the week of August 4, 2022 for South Carolina have been updated to correct a data collection error that resulted in incorrect case data. CDC and its partners have resolved the issue and the correction is reflected in this update.

August 18, 2022: COVID-19 Community Level (CCL) data for the week of August 11, 2022 for Connecticut have been updated to correct a data ingestion error that inflated the CT case rates. CDC, in collaboration with CT, has resolved the issue and the correction is reflected in this update.

August 25, 2022: A laboratory in Tennessee reported a backlog of historic COVID-19 cases. As a result, the 7-day case count and rate may be inflated in many counties and the CCLs published on August 25, 2022 should be interpreted with caution.

August 25, 2022: Due to a data source error, the 7-day case rate for St. Louis County, Missouri, is reported as zero in the COVID-19 Community Level data released on August 25, 2022. Therefore, the COVID-19 Community Level for this county should be interpreted with caution.

September 1, 2022: Due to a reporting issue, case rates for all Nebraska counties will include 6 days of data instead of 7 days in the COVID-19 Community Level (CCL) data released on September 1, 2022. Therefore, the CCLs for all Nebraska counties should be interpreted with caution.

September 8, 2022: Due to a data processing error, the case rate for Philadelphia County, Pennsylvania,

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 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.

Application from MassGIS displaying Legislative Districts within the Commonwealth of Massachusetts (Congress and state Senate and House of Representatives). The data displayed in this map include:U.S. Congressional Districts (118th)Massachusetts Senate Legislative Districts (2021) Massachusetts House Legislative Districts (2021)

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.

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...

Massachusetts House Legislative Districts as signed into law on November 3, 2011. These districts were based on demographic data from the 2010 U.S. Census and are used for elections in 2012 and beyond until the districts are redrawn.

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://res1wwwd-o-tsomervillezoningd-o-tcom.vcapture.xyz/). Last amended by City Council December 12, 2024 per Ordinance 2024-16. This dataset last updated April 4, 2025.

Boundaries of Massachusetts' Counties, derived from MassGIS' Municipalities layer with a generalized coastline. Stored as a hosted feature layer within MassGIS' ArcGIS Online organization. Contains both line and area features.View metadata

This public map service contains points and polygons representing information from the Massachusetts Cultural Resource Information System (MACRIS) database and related records on file at the Massachusetts Historical Commission (MHC), including the Inventory of Historic Assets of the Commonwealth, National Register of Historic Places nomination forms, local historic district study reports, local landmark reports, and other materials. The MACRIS database and the layers within the MACRIS Maps web application are updated regularly as new information is submitted and added, and as the accuracy of earlier versions of the datalayer is improved. Three datalayers are being made available to the public: The Inventory Points layer contains the locations of buildings, burial grounds, structures, and objects (e.g. statues, monuments, walls). The points layer is symbolized to indicate the most common historic designation types: 1) National Register of Historic Places, 2) local historic district, 3) both National Register and local historic district, 4) Preservation Restriction, 5) Massachusetts Historic Landmark (MA/HL) and 6) inventoried but not designated with one of the previous designations. Less common designations are not symbolized in MACRIS, but are included in the Designations attribute field.The Inventory Areas polygon layer includes areas and districts symbolized in MACRIS in a similar manner to Inventory Points. Another polygon layer, Towns, possesses a binary “y” or blank field to indicate whether a town has a survey pending digitization. Please note that new and updated information is added to MHC files daily, and that there may be considerable lag time before this information is reflected in MACRIS or in MACRIS Maps. Map information for “completed” towns may not reflect the most current information on file with MHC. For additional information, users may consult the source records, forms and maps that make up the official Inventory of Historic and Archaeological Assets of the Commonwealth, on file at the MHC, Massachusetts Archives Building, 220 Morrissey Boulevard, Boston, during weekday business hours. No appointment is needed. For directions, see https://www.sec.state.ma.us/mhc/.See the metadata for more details.

The City's Zoning Ordinance and Map are tools for land-use planning. Each zone and overlay classification guides the physical development of the City through a set of requirements set forth in the City of Worcester's Zoning Ordinance as amended. As part of the planning data layers, the zoning overlay districts map layer is an integral part of the City of Worcester Geographic Information System. Planning data layers are accessed by personnel in most City departments for basic applications such as viewing, querying, and map output production. More advanced user applications may focus on planning analysis, spatial analysis, presentation output, and review of proposed development. This feature class combines the previously separate Mixed Use Districts and Overlay Districts, with the addition of Local Historic Districts.This map data layer represents the zoning overlay districts for the City of Worcester, Massachusetts as defined by the Zoning Ordinance, Article III, as amended.OVERLAY DISTRICTS: MU: Mixed Use Development FP: Floodplain AE: Airport Environs WR: Water Resources Protection AOD: Arts Overlay District AROD: Adaptive Re-use Overlay District SPOD: Shrewsbury Street Parking Overlay District BCPOD :Blackstone Canal Parking Overlay District CPOD: Chandler Street Parking Overlay District GPOD: Grafton Street Parking Overlay District QPOD: Quinsigamond Village Parking Overlay District DSOD: Downtown/Blackstone Canal Sign Overlay District BSOD: Blackstone River Parkway Sign Overlay District USOD: Union Station View Corridor Sign Overlay District Informing Worcester is the City of Worcester's open data portal where interested parties can obtain public information at no cost

January 2025