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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Municipal Boundaries

    Metadata Updated: February 14, 2026

    Download In State Plane Projection Here. 

    Municipal boundaries are based on annexations, court orders and other legal documents filed in the office of the Recorder of Deeds. Mapping is based on the legal descriptions from those documents, which relate to existing parcel boundaries or to the underlying PLSS. Important attributes include "Type" which contains an "I" if the polygon represents an incorporated area, and a "U" if unincorporated. The municipality name for "I" type polygons is included in the attribute "NAME1."


    Update Frequency:
    This dataset is updated on a weekly basis.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date September 1, 2022
    Metadata Updated Date February 14, 2026

    Metadata Source

    Harvested from Open data from Lake County, Illinois

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 1, 2022
    Metadata Updated Date February 14, 2026
    Publisher Lake County Illinois GIS
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=811621907d3649778ef35ec37731e921&sublayer=10
    Data First Published 2016-11-21T19:06:37.000Z
    Data Last Modified 2026-02-08T12:18:05.255Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 1d350147-7b85-4ef3-bd67-a48954ba6b84
    Harvest Source Id e2c1b013-5957-4c37-9452-7d0aafee3fcc
    Harvest Source Title Open data from Lake County, Illinois
    Homepage URL https://data-lakecountyil.opendata.arcgis.com/datasets/lakecountyil::municipal-boundaries
    License https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data
    Metadata Type geospatial
    Old Spatial -88.1998,42.1523,-87.7588,42.4958
    Source Datajson Identifier True
    Source Hash bd5a3e648c2a4c13e779492593f5502b691a663b758ffe97f5f2b6aef7170327
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -88.1998, 42.1523, -88.1998, 42.4958, -87.7588, 42.4958, -87.7588, 42.1523, -88.1998, 42.1523}

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