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County governmentIllinois
Lake County, Illinois
1,320 open datasets published by this county government. Latest update 10/18/2026.
Datasets
1,320
131 with descriptions
Topics
18
Maps & Geospatial
File formats
9
ArcGIS REST, ZIP, GeoJSON
Used on DatenUS
0
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Datasets
1,320 datasets
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- Forest Preserve BoundariesDownload In State Plane Projection Here. Lake County Forest Preserve boundaries. Attribute "Site" includes the individual forest preserve name. Update Frequency: This dataset is updated on a weekly basis.CSVXLSXTXTZIP+5Updated 10/18/2026
- State ParksDownload In State Plane Projection Here . Park district boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parcel,CSVXLSXTXTZIP+5Updated 10/18/2026
- Edge of PavementDownload In State Plane Projection Here . The pavement boundaries were traced from aerial photography taken between March 15th, 2018 and April 25th, 2018 . This dataset should meet National Map Accuracy Standards for a 1:1200 product. Lake County staff reviCSVXLSXTXTZIP+5Updated 10/11/2026
- LakeCountyParcelPointsDownload In State Plane Projection Here ** In addition to the Tax Parcel polygons feature class, the hyperlink download above also contains a parcel point data layer ** Parcel boundaries are developed from deeds, plats of subdivision and other legal documents CSVXLSXTXTZIP+5Updated 10/11/2026
- Building FootprintsDownload In State Plane Projection Here . The pavement boundaries were traced from aerial photography taken between April 13 and April 26, 2002 and then updated from photography taken between March 15 and April 25, 2018. This dataset should meet National Map CSVXLSXTXTZIP+5Updated 10/11/2026
- UDO ZoningDownload In State Plane Projection Here . The zoning shapefile defines the geographic extent of zoning districts in unincorporated Lake County as established by the Lake County Code Chapter 151: Unified Development Ordinance. The zoning shapefile is used to cCSVXLSXTXTZIP+5Updated 10/11/2026
- Facility Site PolygonsDownload In State Plane Projection Here . Landmark (Facility Site) point and polygons utilize the Esri Local Government Information model to structure the attribute data. Polygon features are mapped by tax parcel with updates occurring on a weekly basis as eiCSVXLSXTXTZIP+5Updated 10/11/2026
- Facility Site PointsDownload In State Plane Projection Here . Landmark (Facility Site) point and polygons utilize the Esri Local Government Information model to structure the attribute data. Point features are updated on an as-needed basis. Update Frequency: This dataset is updaCSVXLSXTXTZIP+5Updated 10/11/2026
- Special Service Areas and Tax Increment Finance AreasDownload In State Plane Projection Here . SSA and TIF boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parcel, mCSVXLSXTXTZIP+5Updated 10/11/2026
- Sanitary DistrictsDownload In State Plane Projection Here . Sanitary Districts provide sewage collection and treatment within their service areas. Update Frequency: This dataset is updated on a weekly basis.CSVXLSXTXTZIP+5Updated 10/11/2026
- Park DistrictsDownload In State Plane Projection Here . Park district boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parcel,CSVXLSXTXTZIP+5Updated 10/11/2026
- Municipal BoundariesDownload 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 exisCSVXLSXTXTZIP+5Updated 10/11/2026
- Mosquito Abatement DistrictsDownload In State Plane Projection Here . These are the areas for the Mosquito Abatement Districts serving Lake County. Update Frequency: This dataset is updated on a weekly basis.CSVXLSXTXTZIP+5Updated 10/11/2026
- Library DistrictsDownload In State Plane Projection Here . School district boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parceCSVXLSXTXTZIP+5Updated 10/11/2026
- Joint Action Water Agency (JAWA)Download In State Plane Projection Here . The Central Lake County Joint Action Water Agency (JAWA) is a consortium of the municipalities of Grayslake, Gurnee, Lake Bluff, Libertyville, Mundelein, Round Lake, Round Lake Beach, Round Lake Heights, Round Lake PaCSVXLSXTXTZIP+5Updated 10/11/2026
- High School DistrictsDownload In State Plane Projection Here . School district boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parceCSVXLSXTXTZIP+5Updated 10/11/2026
- Fox Waterway Agency BoundariesDownload In State Plane Projection Here . Lake County portion of the Fox Waterway Agency boundaries as described by the Fox Waterway Agency Act legislation. Update Frequency: This dataset is updated on a weekly basis.CSVXLSXTXTZIP+5Updated 10/11/2026
- Fire Protection DistrictsDownload In State Plane Projection Here . Fire district boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parcel,CSVXLSXTXTZIP+5Updated 10/11/2026
- Fire Protection District and Municipal Fire DepartmentsDownload In State Plane Projection Here . These boundaries represent either a Fire Protection Taxing District or a municipal fire department and are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based onCSVXLSXTXTZIP+5Updated 10/11/2026
- Elementary School DistrictsDownload In State Plane Projection Here . School district boundaries are based on legal documents filed in the office of the Recorder of Deeds and on court orders. Mapping is based on the legal descriptions from those documents, which relate to existing parceCSVXLSXTXTZIP+5Updated 10/11/2026
- Drainage DistrictsDownload In State Plane Projection Here . Drainage districts are local bodies formed for the purpose of draining, ditching, and improving land for agricultural and sanitary purposes. They are authorized to build and maintain drains and levees, to sue all neceCSVXLSXTXTZIP+5Updated 10/11/2026
- Community College DistrictsDownload In State Plane Projection Here . These are the areas for the Community Colleges serving Lake County. Update Frequency: This dataset is updated on a weekly basis.CSVXLSXTXTZIP+5Updated 10/11/2026
- Address PointsDownload In State Plane Projection Here. These address points were developed for a myriad of uses including general public geocoding in Lake County web sites and NG-911 emergency dispatch. All addresses are reviewed on a monthly basis against the United StatCSVXLSXTXTZIP+5Updated 10/11/2026
- Trail CenterlinesDownload In State Plane Projection Here . This Trails theme is the result of a collaborative effort by the Lake County Division of Transportation, the Lake County Forest Preserve District, the municipalities of Gurnee, Highland Park, Lake Forest, LibertyvilleCSVXLSXTXTZIP+5Updated 10/11/2026
- Street CenterlinesDownload In State Plane Projection Here . ** The Street Centerline feature class now follows the NG911/State of Illinois data specifications including a StreetNameAlias table. The download hyperlink above also contains a full network topology for use with thCSVXLSXTXTZIP+5Updated 10/11/2026
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Frequently asked questions
- How many datasets does Lake County, Illinois publish?
- The DatenUS catalog lists 1,320 open datasets from Lake County, Illinois, most often about maps & geospatial and water.
- Where can I download Lake County, Illinois data?
- Each dataset page links to the official download files and APIs on the government's open data portal. DatenUS does not host copies, so you always get the current version.
- How current is this list?
- We check the source catalogs every day. The most recent dataset change from Lake County, Illinois was on 10/18/2026.
Source: State and local open data portals and Data.gov · Last updated 10/18/2026