100+ datasets found
  1. 500 Cities: City Boundaries

    • s.cnmilf.com
    • datahub.hhs.gov
    • +6more
    Updated Feb 3, 2025
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    Centers for Disease Control and Prevention (2025). 500 Cities: City Boundaries [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/500-cities-city-boundaries
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    Dataset updated
    Feb 3, 2025
    Dataset provided by
    Centers for Disease Control and Preventionhttp://www.cdc.gov/
    Description

    This city boundary shapefile was extracted from Esri Data and Maps for ArcGIS 2014 - U.S. Populated Place Areas. This shapefile can be joined to 500 Cities city-level Data (GIS Friendly Format) in a geographic information system (GIS) to make city-level maps.

  2. Large Scale International Boundaries

    • geodata.state.gov
    • s.cnmilf.com
    • +1more
    Updated Feb 24, 2025
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    U.S. Department of State (2025). Large Scale International Boundaries [Dataset]. https://geodata.state.gov/geonetwork/srv/api/records/3bdb81a0-c1b9-439a-a0b1-85dac30c59b2
    Explore at:
    www:link-1.0-http--link, www:link-1.0-http--related, www:download:gpkg, www:download:zip, ogc:wms-1.3.0-http-get-capabilitiesAvailable download formats
    Dataset updated
    Feb 24, 2025
    Dataset provided by
    United States Department of Statehttp://state.gov/
    Authors
    U.S. Department of State
    Area covered
    Description

    Overview

    The Office of the Geographer and Global Issues at the U.S. Department of State produces the Large Scale International Boundaries (LSIB) dataset. The current edition is version 11.4 (published 24 February 2025). The 11.4 release contains updated boundary lines and data refinements designed to extend the functionality of the dataset. These data and generalized derivatives are the only international boundary lines approved for U.S. Government use. The contents of this dataset reflect U.S. Government policy on international boundary alignment, political recognition, and dispute status. They do not necessarily reflect de facto limits of control.

    National Geospatial Data Asset

    This dataset is a National Geospatial Data Asset (NGDAID 194) managed by the Department of State. It is a part of the International Boundaries Theme created by the Federal Geographic Data Committee.

    Dataset Source Details

    Sources for these data include treaties, relevant maps, and data from boundary commissions, as well as national mapping agencies. Where available and applicable, the dataset incorporates information from courts, tribunals, and international arbitrations. The research and recovery process includes analysis of satellite imagery and elevation data. Due to the limitations of source materials and processing techniques, most lines are within 100 meters of their true position on the ground.

    Cartographic Visualization

    The LSIB is a geospatial dataset that, when used for cartographic purposes, requires additional styling. The LSIB download package contains example style files for commonly used software applications. The attribute table also contains embedded information to guide the cartographic representation. Additional discussion of these considerations can be found in the Use of Core Attributes in Cartographic Visualization section below.

    Additional cartographic information pertaining to the depiction and description of international boundaries or areas of special sovereignty can be found in Guidance Bulletins published by the Office of the Geographer and Global Issues: https://data.geodata.state.gov/guidance/index.html

    Contact

    Direct inquiries to internationalboundaries@state.gov. Direct download: https://data.geodata.state.gov/LSIB.zip

    Attribute Structure

    The dataset uses the following attributes divided into two categories: ATTRIBUTE NAME | ATTRIBUTE STATUS CC1 | Core CC1_GENC3 | Extension CC1_WPID | Extension COUNTRY1 | Core CC2 | Core CC2_GENC3 | Extension CC2_WPID | Extension COUNTRY2 | Core RANK | Core LABEL | Core STATUS | Core NOTES | Core LSIB_ID | Extension ANTECIDS | Extension PREVIDS | Extension PARENTID | Extension PARENTSEG | Extension

    These attributes have external data sources that update separately from the LSIB: ATTRIBUTE NAME | ATTRIBUTE STATUS CC1 | GENC CC1_GENC3 | GENC CC1_WPID | World Polygons COUNTRY1 | DoS Lists CC2 | GENC CC2_GENC3 | GENC CC2_WPID | World Polygons COUNTRY2 | DoS Lists LSIB_ID | BASE ANTECIDS | BASE PREVIDS | BASE PARENTID | BASE PARENTSEG | BASE

    The core attributes listed above describe the boundary lines contained within the LSIB dataset. Removal of core attributes from the dataset will change the meaning of the lines. An attribute status of “Extension” represents a field containing data interoperability information. Other attributes not listed above include “FID”, “Shape_length” and “Shape.” These are components of the shapefile format and do not form an intrinsic part of the LSIB.

    Core Attributes

    The eight core attributes listed above contain unique information which, when combined with the line geometry, comprise the LSIB dataset. These Core Attributes are further divided into Country Code and Name Fields and Descriptive Fields.

    County Code and Country Name Fields

    “CC1” and “CC2” fields are machine readable fields that contain political entity codes. These are two-character codes derived from the Geopolitical Entities, Names, and Codes Standard (GENC), Edition 3 Update 18. “CC1_GENC3” and “CC2_GENC3” fields contain the corresponding three-character GENC codes and are extension attributes discussed below. The codes “Q2” or “QX2” denote a line in the LSIB representing a boundary associated with areas not contained within the GENC standard.

    The “COUNTRY1” and “COUNTRY2” fields contain the names of corresponding political entities. These fields contain names approved by the U.S. Board on Geographic Names (BGN) as incorporated in the ‘"Independent States in the World" and "Dependencies and Areas of Special Sovereignty" lists maintained by the Department of State. To ensure maximum compatibility, names are presented without diacritics and certain names are rendered using common cartographic abbreviations. Names for lines associated with the code "Q2" are descriptive and not necessarily BGN-approved. Names rendered in all CAPITAL LETTERS denote independent states. Names rendered in normal text represent dependencies, areas of special sovereignty, or are otherwise presented for the convenience of the user.

    Descriptive Fields

    The following text fields are a part of the core attributes of the LSIB dataset and do not update from external sources. They provide additional information about each of the lines and are as follows: ATTRIBUTE NAME | CONTAINS NULLS RANK | No STATUS | No LABEL | Yes NOTES | Yes

    Neither the "RANK" nor "STATUS" fields contain null values; the "LABEL" and "NOTES" fields do. The "RANK" field is a numeric expression of the "STATUS" field. Combined with the line geometry, these fields encode the views of the United States Government on the political status of the boundary line.

    ATTRIBUTE NAME | | VALUE | RANK | 1 | 2 | 3 STATUS | International Boundary | Other Line of International Separation | Special Line

    A value of “1” in the “RANK” field corresponds to an "International Boundary" value in the “STATUS” field. Values of ”2” and “3” correspond to “Other Line of International Separation” and “Special Line,” respectively.

    The “LABEL” field contains required text to describe the line segment on all finished cartographic products, including but not limited to print and interactive maps.

    The “NOTES” field contains an explanation of special circumstances modifying the lines. This information can pertain to the origins of the boundary lines, limitations regarding the purpose of the lines, or the original source of the line.

    Use of Core Attributes in Cartographic Visualization

    Several of the Core Attributes provide information required for the proper cartographic representation of the LSIB dataset. The cartographic usage of the LSIB requires a visual differentiation between the three categories of boundary lines. Specifically, this differentiation must be between:

    • International Boundaries (Rank 1);
    • Other Lines of International Separation (Rank 2); and
    • Special Lines (Rank 3).

    Rank 1 lines must be the most visually prominent. Rank 2 lines must be less visually prominent than Rank 1 lines. Rank 3 lines must be shown in a manner visually subordinate to Ranks 1 and 2. Where scale permits, Rank 2 and 3 lines must be labeled in accordance with the “Label” field. Data marked with a Rank 2 or 3 designation does not necessarily correspond to a disputed boundary. Please consult the style files in the download package for examples of this depiction.

    The requirement to incorporate the contents of the "LABEL" field on cartographic products is scale dependent. If a label is legible at the scale of a given static product, a proper use of this dataset would encourage the application of that label. Using the contents of the "COUNTRY1" and "COUNTRY2" fields in the generation of a line segment label is not required. The "STATUS" field contains the preferred description for the three LSIB line types when they are incorporated into a map legend but is otherwise not to be used for labeling.

    Use of

  3. NPL Superfund Site Boundaries (EPA)

    • catalog.data.gov
    Updated Sep 8, 2025
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    U.S. Environmental Protection Agency, Office of Land and Emergency Management (Publisher) (2025). NPL Superfund Site Boundaries (EPA) [Dataset]. https://catalog.data.gov/dataset/npl-superfund-site-boundaries-epa10
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    Dataset updated
    Sep 8, 2025
    Dataset provided by
    United States Environmental Protection Agencyhttp://www.epa.gov/
    Description

    This GIS dataset contains polygons depicting U.S. EPA Superfund Site boundaries. Site boundaries are polygons representing the footprint of a whole site, defined for purposes of this effort as the sum of all of the Operable Units and the current understanding of the full extent of contamination. For Federal Facility sites, the total site polygon may be the Facility boundary. As site investigation and remediation progress, OUs may be added, modified or refined, and the total site polygon should be updated accordingly. Superfund features are managed by regional teams of geospatial professionals and remedial program managers (RPMs), and SEGS harvests regional data on a weekly basis to refresh the national dataset and feature services.

  4. Gridded Population of the World, Version 3 (GPWv3): National Administrative...

    • data.nasa.gov
    Updated Apr 23, 2025
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    nasa.gov (2025). Gridded Population of the World, Version 3 (GPWv3): National Administrative Boundaries - Dataset - NASA Open Data Portal [Dataset]. https://data.nasa.gov/dataset/gridded-population-of-the-world-version-3-gpwv3-national-administrative-boundaries
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    Dataset updated
    Apr 23, 2025
    Dataset provided by
    NASAhttp://nasa.gov/
    Area covered
    World
    Description

    The Gridded Population of the World, Version 3 (GPWv3): National Administrative Boundaries are derived from the land area grid to show the outlines of pixels (cells) that contain administrative Units in GPWv3 on a per-country/territory basis. The National Boundaries data are derived from the pixels as polygons and thus have rectilinear boundaries at large scale. Note that the polygons that outline the countries and territories are not official representations; rather, they represent the area covered by the statistical data as provided. The national/territorial boundaries are designed for cartographic use with the GPWv3 population raster data sets. GPWv3 is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with Centro Internacional de Agricultura Tropical (CIAT).

  5. Survey Boundaries maintained by the US Forest Service (Feature Layer)

    • catalog.data.gov
    • datasets.ai
    • +7more
    Updated Apr 21, 2025
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    U.S. Forest Service (2025). Survey Boundaries maintained by the US Forest Service (Feature Layer) [Dataset]. https://catalog.data.gov/dataset/survey-boundaries-maintained-by-the-us-forest-service-feature-layer-96433
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    Dataset updated
    Apr 21, 2025
    Dataset provided by
    U.S. Department of Agriculture Forest Servicehttp://fs.fed.us/
    Description

    The purpose of this featureclass is to allow national forest system boundary managers to query and report on the status of these boundaries for planning boundary management and maintenance work, and to provide this information to anyone else needing this information for analysis, querying, reporting, mapping. The lines should indicate the current status of the physical marked and posted lines in the field, and their maintenance status. Surface Management Agency (SMA) lines represent the surveyed boundary lines for which the Forest Service is responsible for marking and posting. These include the boundaries between NFS lands and non-NFS lands and the boundaries of congressionally designated areas such as National Wilderness. Metadata

  6. a

    New York State Municipal Civil Boundaries

    • hub.arcgis.com
    • data.cityofrochester.gov
    • +1more
    Updated Mar 6, 2020
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    Open_Data_Admin (2020). New York State Municipal Civil Boundaries [Dataset]. https://hub.arcgis.com/datasets/RochesterNY::new-york-state-municipal-civil-boundaries/about
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    Dataset updated
    Mar 6, 2020
    Dataset authored and provided by
    Open_Data_Admin
    Area covered
    Description

    Publication Date: February 2020. Updated as needed. Current as of the Publication Date.

    A vector polygon layer of all city and town boundaries in New York State. The source data was originally a compilation of U.S. Geological Survey 1:100,000-scale digital vector files and NYS Department of Transportation 1:24,000-scale and 1:75,000-scale digital vector files. Boundaries were revised to 1:24,000-scale positional accuracy and selectively updated based on municipal boundary reviews, court decisions and NYS Department of State Local Law filings for annexations, dissolutions, and incorporations. Currently, boundary changes are made based on NYS Department of State Local Law filings (http://locallaws.dos.ny.gov/). Additional updates and corrections are made as needed in partnership with municipalities.

    Additional metadata, including field descriptions, can be found at the NYS GIS Clearinghouse: http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=927.

    Spatial Reference of Source Data: NAD 1983 UTM Zone 18N. Spatial Reference of Map Service: WGS 1984 Web Mercator Auxiliary Sphere. This map service is available to the public.

    The State of New York, acting through the New York State Office of Information Technology Services, makes no representations or warranties, express or implied, with respect to the use of or reliance on the Data provided. The User accepts the Data provided “as is” with no guarantees that it is error free, complete, accurate, current or fit for any particular purpose and assumes all risks associated with its use. The State disclaims any responsibility or legal liability to Users for damages of any kind, relating to the providing of the Data or the use of it. Users should be aware that temporal changes may have occurred since this Data was created.Credit: NYS Office of Information Technology Services GIS Program Office (GPO). Primary Contact: GPO, GISBoundaries@its.ny.gov, 518-242-5029.

  7. t

    Residential Boundaries

    • data.townofcary.org
    • gimi9.com
    • +1more
    csv, excel, geojson +1
    Updated Oct 20, 2025
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    (2025). Residential Boundaries [Dataset]. https://data.townofcary.org/explore/dataset/residential-boundaries/
    Explore at:
    csv, excel, geojson, jsonAvailable download formats
    Dataset updated
    Oct 20, 2025
    License

    CC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
    License information was derived automatically

    Description

    This dataset contains existing and approved residential boundaries in Cary, NC. For additional information on properties check out our website. This dataset is updated as residential boundaries are changed.

  8. Oil and Gas Field Administrative Boundaries

    • data.cnra.ca.gov
    • data.ca.gov
    • +8more
    Updated May 14, 2019
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    California Department of Conservation (2019). Oil and Gas Field Administrative Boundaries [Dataset]. https://data.cnra.ca.gov/dataset/oil-and-gas-field-administrative-boundaries
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    zip, html, arcgis geoservices rest api, geojson, kml, csvAvailable download formats
    Dataset updated
    May 14, 2019
    Dataset authored and provided by
    California Department of Conservationhttp://www.conservation.ca.gov/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Administrative boundaries for oil and gas fields in California.


    CalGEM is the Geologic Energy Management Division of the California Department of Conservation, formerly the Division of Oil, Gas, and Geothermal Resources (as of January 1, 2020).

    Update Frequency: As Needed

  9. India Map - State, District Boundaries

    • kaggle.com
    Updated Aug 30, 2024
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    Tapendu Karmakar (2024). India Map - State, District Boundaries [Dataset]. https://www.kaggle.com/datasets/iamtapendu/india-map-state-district-boundaries
    Explore at:
    CroissantCroissant is a format for machine-learning datasets. Learn more about this at mlcommons.org/croissant.
    Dataset updated
    Aug 30, 2024
    Dataset provided by
    Kaggle
    Authors
    Tapendu Karmakar
    License

    Apache License, v2.0https://www.apache.org/licenses/LICENSE-2.0
    License information was derived automatically

    Area covered
    India
    Description

    Shapefile Description:

    The shapefile of India with district-level details is a geospatial dataset that provides detailed geographic boundaries and attributes of districts across the country.

    Key Features:

    • Geographic Boundaries: Contains precise polygon boundaries outlining each district within India's states, allowing for detailed mapping and spatial analysis.
    • District-Level Details: Includes attributes such as district names, state affiliations, and potentially other demographic or administrative information.
    • Projection and Coordinate System: Typically includes information on the geographic projection and coordinate system used, ensuring accurate mapping and integration with other spatial data.
    • Usage: Useful for spatial analysis, visualization, and geographic information system (GIS) applications related to administrative divisions, resource management, and planning.

    Applications:

    • Mapping and Visualization: Enables the creation of detailed maps showing district boundaries and distribution across India.
    • Spatial Analysis: Facilitates analysis of data at the district level, including demographic studies, resource allocation, and policy planning.
    • Integration with Other Data: Can be combined with various datasets (e.g., crop production, economic indicators) for comprehensive analysis and reporting.
  10. A

    Boston Neighborhood Boundaries

    • data.boston.gov
    • cloudcity.ogopendata.com
    • +1more
    Updated Apr 3, 2025
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    Boston Maps (2025). Boston Neighborhood Boundaries [Dataset]. https://data.boston.gov/dataset/bpda-neighborhood-boundaries
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    html, kml, geojson, csv, arcgis geoservices rest api, shpAvailable download formats
    Dataset updated
    Apr 3, 2025
    Dataset authored and provided by
    Boston Maps
    License

    ODC Public Domain Dedication and Licence (PDDL) v1.0http://www.opendatacommons.org/licenses/pddl/1.0/
    License information was derived automatically

    Area covered
    Boston
    Description

    Boston Neighborhood Boundaries represent a combination of zoning neighborhood boundaries, zip code boundaries and 2010 census tract boundaries. These boundaries are used in the broad sense for visualization purposes, research analysis and planning studies. However these boundaries are not official neighborhood boundaries for the City of Boston. The BPDA is not responsible for any districts or boundaries within the City of Boston except for the districts we use for planning purposes.

  11. a

    Municipal Boundaries

    • csagis-uok.opendata.arcgis.com
    Updated Jul 21, 2020
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    twoody_uok (2020). Municipal Boundaries [Dataset]. https://csagis-uok.opendata.arcgis.com/datasets/0ae5dcaee95a4e08a6466a37fd27c46a
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    Dataset updated
    Jul 21, 2020
    Dataset authored and provided by
    twoody_uok
    Area covered
    Description

    This is an ESRI shapefile of State-wide municipal boundaries for Oklahoma State. Boundaries are based on information provided by the Oklahoma Tax Commission.

  12. T

    City Boundaries

    • data.bayareametro.gov
    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    • +2more
    Updated Aug 16, 2021
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    (2021). City Boundaries [Dataset]. https://data.bayareametro.gov/dataset/City-Boundaries/xemy-bwya
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    xml, kml, xlsx, kmz, csv, application/geo+jsonAvailable download formats
    Dataset updated
    Aug 16, 2021
    Description

    These boundaries have been clipped to land boundaries

  13. Administrative Boundaries: Sectors, Districts & Field Divisions

    • data.ca.gov
    • data.cnra.ca.gov
    • +2more
    Updated Jan 15, 2025
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    California Department of Parks and Recreation (2025). Administrative Boundaries: Sectors, Districts & Field Divisions [Dataset]. https://data.ca.gov/dataset/administrative-boundaries-sectors-districts-field-divisions
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    arcgis geoservices rest api, htmlAvailable download formats
    Dataset updated
    Jan 15, 2025
    Dataset provided by
    California State Parkshttps://www.parks.ca.gov/
    Authors
    California Department of Parks and Recreation
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    California State Parks Field Division, District and Sector boundaries, 2024.

  14. Settlement Boundaries - Dataset - data.gov.uk

    • ckan.publishing.service.gov.uk
    Updated Mar 20, 2015
    + more versions
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    ckan.publishing.service.gov.uk (2015). Settlement Boundaries - Dataset - data.gov.uk [Dataset]. https://ckan.publishing.service.gov.uk/dataset/settlement-boundaries2
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    Dataset updated
    Mar 20, 2015
    Dataset provided by
    CKANhttps://ckan.org/
    Description

    Administrative boundaries for all towns and villages with a population of more than 100 and with a recognised nucleus of village life, such as a school, local shop or public house, as defined in the South Ayrshire Local Development Plan. The boundaries defined include activities and land uses normally considered as being an integral element of these areas - (schools, shops, factories, houses and their gardens being prime examples of these). Great care has been taken in defining the boundaries of the settlements to allow for planned expansion whilst providing a clear distinction between what are areas of built/urban development (town) and what are areas of non-urban or rural development (country). All Planning policies applicable to towns are enforced within these settlement boundaries.

  15. Z

    Boundaries dataset of the Kunbaja online resource

    • data.niaid.nih.gov
    Updated Aug 7, 2023
    + more versions
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    Csauscher-Wuck, Maria (2023). Boundaries dataset of the Kunbaja online resource [Dataset]. https://data.niaid.nih.gov/resources?id=zenodo_8196730
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    Dataset updated
    Aug 7, 2023
    Dataset provided by
    LNU
    Authors
    Csauscher-Wuck, Maria
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Kunbaja
    Description

    Information layer "boundaries" of the Kunbaja online resource model built in QGIS as dataset in the ESRI shapefile format

  16. m

    Maryland Physical Boundaries - County Boundaries (Detailed)

    • data.imap.maryland.gov
    • dev-maryland.opendata.arcgis.com
    • +1more
    Updated Feb 9, 2016
    + more versions
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    ArcGIS Online for Maryland (2016). Maryland Physical Boundaries - County Boundaries (Detailed) [Dataset]. https://data.imap.maryland.gov/datasets/2315ef0b071a4ec59420e3d342dbcfe2
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    Dataset updated
    Feb 9, 2016
    Dataset authored and provided by
    ArcGIS Online for Maryland
    Area covered
    Description

    This layer contains detailed outlines of Maryland counties. The Maryland land county boundaries were built using political county boundaries and the National Hydrology Data (NHD). Land boundaries are a key geographic featue in our mapping process.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Last Updated: UnknownFeature Service Link:https://mdgeodata.md.gov/imap/rest/services/Boundaries/MD_PhysicalBoundaries/FeatureServer/0

  17. C

    Allegheny County Municipal Boundaries

    • data.wprdc.org
    • catalog.data.gov
    • +4more
    csv, geojson, html +2
    Updated Jun 28, 2025
    + more versions
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    Allegheny County (2025). Allegheny County Municipal Boundaries [Dataset]. https://data.wprdc.org/dataset/allegheny-county-municipal-boundaries
    Explore at:
    html, csv, zip(699271), kml(960584), geojson(2397488)Available download formats
    Dataset updated
    Jun 28, 2025
    Dataset authored and provided by
    Allegheny County
    Area covered
    Allegheny County
    Description

    This dataset demarcates the municipal boundaries in Allegheny County. Data was created to portray the boundaries of the 130 Municipalities in Allegheny County the attribute table includes additional descriptive information including Councils of Government (COG) affiliation (regional governing and coordinating bodies comprised of several bordering municipalities), School District, Congressional District, FIPS and County Municipal Code and County Council District.

    This dataset is harvested on a weekly basis from Allegheny County’s GIS data portal. The full metadata record for this dataset can also be found on Allegheny County's GIS portal. You can access the metadata record and other resources on the GIS portal by clicking on the "Explore" button (and choosing the "Go to resource" option) to the right of the "ArcGIS Open Dataset" text below.

    Category: Civic Vitality and Governance

    Department: Geographic Information Systems Group; Department of Administrative Services

  18. o

    Abia Operational Ward Boundaries - Dataset - openAFRICA

    • open.africa
    Updated May 12, 2021
    + more versions
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    (2021). Abia Operational Ward Boundaries - Dataset - openAFRICA [Dataset]. https://open.africa/dataset/abia-operational-ward
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    Dataset updated
    May 12, 2021
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Administrative Boundaries define the spatial extent level of legislative jurisdictions and regulatory, electoral statistical and maritime geographic areas

  19. o

    Rivers State Administrative Boundaries - Dataset - openAFRICA

    • open.africa
    Updated Sep 6, 2019
    + more versions
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    (2019). Rivers State Administrative Boundaries - Dataset - openAFRICA [Dataset]. https://open.africa/dataset/rivers-state-administrative-boundaries
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    Dataset updated
    Sep 6, 2019
    Area covered
    Rivers
    Description

    Administrative Boundaries define the spatial extent level of legislative jurisdictions and regulatory, electoral, statistical and maritime geographic areas

  20. c

    Boundaries

    • cacgeoportal.com
    Updated Dec 7, 2021
    + more versions
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    Living Atlas – Landscape Content (2021). Boundaries [Dataset]. https://www.cacgeoportal.com/datasets/LandscapeTeam::boundaries-2
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    Dataset updated
    Dec 7, 2021
    Dataset authored and provided by
    Living Atlas – Landscape Content
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
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    Named Landforms of the World version 2 (NLWv2) contains four sub-layers representing geomorphological landforms, provinces, divisions, and their respective cartographic boundaries. The latter supports map making, while the first three represent basic units, such as landforms, which comprise provinces, and provinces comprise divisions. NLW is a substantial update to World Named Landforms in both compilation method and the attributes that describe each landform. For more details, please refer to our paper, Named Landforms of the World: A Geomorphological and Physiographic Compilation, in Annals of the American Association of Geographers. July 2, 2025: We have made Named Landforms of the World v3 (NLWv3) available. Please explore this group containing all of the layers and data. NLWv2 will remain available. Landforms are commonly defined as natural features on the surface of the Earth. The National Geographic Society specifies terrain as the basis for landforms and lists four major types: mountains, hills, plateaus, and plains. Here, however, we define landforms in a richer way that includes properties relating to underlying geologic structure, erosional and depositional character, and tectonic setting and processes. These characteristics were asserted by Dr. Richard E. Murphy in 1968 in his map, titled Landforms of the World. We blended Murphy"s definition for landforms with the work E.M. Bridges, who in his 1990 book, World Geomorphology, provided a globally consistent description of geomorphological divisions, provinces, and sections to give names to the landform regions of the world. AttributeDescriptionBridges Full NameFull name from E.M. Bridges" 1990 "World Geomorphology" Division and if present province and section - intended for labeling print maps of small extents. Bridges DivisionGeomorphological Division as described in E.M. Bridges" 1990 "World Geomorphology" - All Landforms have a division assigned, i.e., no nulls. Bridges ProvinceGeomorphological Province as described in E.M. Bridges" 1990 "World Geomorphology" - Not all divisions are subdivided into provinces. Bridges SectionGeomorphological Section as described in E.M. Bridges" 1990 "World Geomorphology" - Not all provinces are subdivided into sections.StructureLandform Structure as described in Richard E. Murphy"s 1968 "Landforms of the World" map. Coded Value Domain. Values include: - Alpine Systems: Area of mountains formed by orogenic (collisions of tectonic plates) processes in the past 350 to 500 million years. - Caledonian/Hercynian Shield Remnants: Area of mountains formed by orogenic (collisions of tectonic plates) processes 350 to 500 million years ago. - Gondwana or Laurasian Shields: Area underlaid by mostly crystalline rock formations fromed one billion or more years ago and unbroken by tectonic processes. - Rifted Shield Areas: fractures or spreading along or adjacent to tectonic plate edges. - Isolated Volcanic Areas: volcanic activity occurring outside of Alpine Systems and Rifted Shields. - Sedimentary: Areas of deposition occurring within the past 2.5 million years Moist or DryLandform Erosional/Depositional variable as described in Richard E. Murphy"s 1968 "Landforms of the World" map. Coded Value Domain. Values include: - Moist: where annual aridity index is 1.0 or higher, which implies precipitation is absorbed or lost via runoff. - Dry: where annual aridity index is less than 1.0, which implies more precipitation evaporates before it can be absorbed or lost via runoff. TopographicLandform Topographic type variable as described in Richard E. Murphy"s 1968 "Landforms of the World" map. Karagulle et. al. 2017 - based on rich morphometric characteristics. Coded Value Domain. Values include: - Plains: Areas with less than 90-meters of relief and slopes under 20%. - Hills: Areas with 90- to 300-meters of local relief. - Mountains: Areas with over 300-meters of relief - High Tablelands: Areas with over 300-meters of relief and 50% of highest elevation areas are of gentle slope. - Depressions or Basins: Areas of land surrounded land of higher elevation. Glaciation TypeLandform Erosional/Depositional variable as described in Richard E. Murphy"s 1968 "Landforms of the World" map. Values include: - Wisconsin/Wurm Glacial Extent: Areas of most recent glaciation which formed 115,000 years ago and ended 11,000 years ago. - Pre-Wisconsin/Wurm Glacial Extent: Areas subjected only to glaciation prior to 140,000 years ago. ContinentAssigned by Author during data compilation. Bridges Short NameThe name of the smallest of Division, Province, or Section containing this landform feature. Murphy Landform CodeCombination of Richard E. Murphy"s 1968 "Landforms of the World" variables expressed as a 3- or 4- letter notation. Used to label medium scale maps. Area_GeoGeodesic area in km2. Primary PlateName of tectonic plate that either completely underlays this landform feature or underlays the largest portion of the landform"s area.Secondary PlateWhen a landform is underlaid by two or more tectonic plates, this is the plate that underlays the second largest area.3rd PlateWhen a landform is underlaid by three or more tectonic plates, this is the plate that underlays the third largest area.4th PlateWhen a landform is underlaid by four or more tectonic plates, this is the plate that underlays the fourth largest area.5th PlateWhen a landform is underlaid by five tectonic plates, this is the plate that underlays the fifth largest area.NotesContains standard text to convey additional tectonic process characteristics. Tectonic ProcessAssigns values of orogenic, rift zone, or above subducting plate. These data are also available as an ArcGIS Pro Map Package: Named_Landforms_of_the_World_v2.0.mpkx.These data supersede the earlier v1.0: World Named Landforms. Change Log:DateDescription of ChangeJuly 20, 2022Corrected spelling of Guiana from incorrect representation, "Guyana", used by Bridges.July 27, 2022Corrected Structure coded value domain value, changing "Caledonian/Hercynian Shield" to "Caledonian , Hercynian, or Appalachian Remnants". Cite as: Frye, C., Sayre R., Pippi, M., Karagulle, Murphy, A., D. Soller, D.R., Gilbert, M., and Richards, J., 2022. Named Landforms of the World. DOI: 10.13140/RG.2.2.33178.93129. Accessed on:

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Centers for Disease Control and Prevention (2025). 500 Cities: City Boundaries [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/500-cities-city-boundaries
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500 Cities: City Boundaries

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Dataset updated
Feb 3, 2025
Dataset provided by
Centers for Disease Control and Preventionhttp://www.cdc.gov/
Description

This city boundary shapefile was extracted from Esri Data and Maps for ArcGIS 2014 - U.S. Populated Place Areas. This shapefile can be joined to 500 Cities city-level Data (GIS Friendly Format) in a geographic information system (GIS) to make city-level maps.

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