92 datasets found
  1. d

    Lake County Boundary

    • catalog.data.gov
    • data-test-lakecountyil.opendata.arcgis.com
    • +2more
    Updated Nov 22, 2025
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    Lake County Illinois GIS (2025). Lake County Boundary [Dataset]. https://catalog.data.gov/dataset/lake-county-boundary-5e5b4
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    Dataset updated
    Nov 22, 2025
    Dataset provided by
    Lake County Illinois GIS
    Description

    Download In State Plane Projection Here. This is our working version of the Lake County boundary. Although technically the county's eastern border extends eastward into Lake Michigan to the state line where Illinois meets Michigan, we routinely use the Lake Michigan shoreline as our eastern boundary for mapping purposes. The north, west and south boundaries are based on a compilation of survey data which aligns well, but not perfectly, with the border as mapped by neighboring counties and the State of Wisconsin, which forms the northern boundary of the county. Update Frequency: This dataset is updated on a weekly basis.

  2. v

    Lake County Wetland Inventory

    • anrgeodata.vermont.gov
    • catalog.data.gov
    • +3more
    Updated Oct 1, 2016
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    Lake County Illinois GIS (2016). Lake County Wetland Inventory [Dataset]. https://anrgeodata.vermont.gov/datasets/lakecountyil::lake-county-wetland-inventory/explore
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    Dataset updated
    Oct 1, 2016
    Dataset authored and provided by
    Lake County Illinois GIS
    License

    https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/datahttps://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data

    Area covered
    Description

    Download In State Plane Projection Here

    The Lake County Wetland Inventory (LCWI) maps natural and artificial wetlands meeting definitions established by the federal agencies who work with the Lake County Geographic Information System staff to periodically review and update it. These agencies include the United States Environmental Protection Agency, the U.S. Fish and Wildlife Service, the USDA Natural Resources Conservation Service and the United States Army Corps of Engineers.

    The 1989 federal wetland delineation standards for offsite wetland mapping are used. This data was last published in March of 1993. This update includes changes to the previous version of LCWI including: adjust current wetland boundaries to omit development, including roads; to fine tune boundary placement where that was intended by the original delineation, in some cases, adjust the wetland to photographic features / signature; delete wetlands which the committee decided were mapped in error - for example, trees which were mistaken for wet areas; create polygons for newly delineated artificial wetlands; and newly delineated wetlands or farmed wetlands caused by the continued deterioration of the agricultural drain tile system and increased runoff due to urbanization.

    The LCWI is a useful tool for general planning and review purposes, but it does not take the place of an on-site delineation by a certified wetland specialist.

    High resolution (1" = 100') orthorectified aerial imagery captured in April 2002 was used as the base for this update. Other data used as reference for this update include: 2004 SOIL SURVEY GEOGRAPHIC (SSURGO) DATABASE FOR LAKE COUNTY, IL - U.S. Department of Agriculture, Natural Resources Conservation Service; HYDROLOGY2002 - Lake County GIS/Map Division; 2' topography (CONTOURS) - Lake County GIS/Map Division; and various years of historical aerial photography for clarification. By using the more recent higher resolution photography, the resulting updated wetland boundaries are more accurate then the original boundaries published in 1993.

  3. a

    Lake County Parcel

    • project-gallery-agis.hub.arcgis.com
    • california-parcel-update-agis.hub.arcgis.com
    Updated Apr 29, 2023
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    Advanced GIS Lab (2023). Lake County Parcel [Dataset]. https://project-gallery-agis.hub.arcgis.com/maps/6876439e560c457b95e63d99659ed04d
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    Dataset updated
    Apr 29, 2023
    Dataset authored and provided by
    Advanced GIS Lab
    License

    MIT Licensehttps://opensource.org/licenses/MIT
    License information was derived automatically

    Area covered
    Description

    Data Source: The data was downloaded from the Lake County, CA GIS portal, the 'parcel.shp' and 'zoning.shp' were spatially joined. Data was enriched with Fire Hazard Zone, Flood Risk Zone, Fault Zones, Landslide Risk, Liquifaction Zones, Drought Conditions, and the potential for Renewable Energy (Solar Radiation and Wind Speed) layers, in addition to the layers provided by the county. The table schema is detailed below.

  4. a

    Lake County Base Map

    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    • geohub-lcgis.opendata.arcgis.com
    Updated Sep 28, 2017
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    Lake County Maps & Apps (2017). Lake County Base Map [Dataset]. https://arc-gis-hub-home-arcgishub.hub.arcgis.com/maps/3b69a507407a4f898207e97e5065366a
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    Dataset updated
    Sep 28, 2017
    Dataset authored and provided by
    Lake County Maps & Apps
    Area covered
    Description

    This map is a composite of local Lake County data in a single easy to use basemap. It can be used under any other layers as a simple and basic map view. Data is sourced from various basemap feature classes in the Publication2 SDE geodatabase and are updated daily to ensure accurate, up to date base data.

  5. a

    Tax Parcel Data

    • data-lakecountyil.opendata.arcgis.com
    • catalog.data.gov
    Updated Dec 20, 2016
    + more versions
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    Lake County Illinois GIS (2016). Tax Parcel Data [Dataset]. https://data-lakecountyil.opendata.arcgis.com/documents/b9e3b83f8fb44934a0600888963f5085
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    Dataset updated
    Dec 20, 2016
    Dataset authored and provided by
    Lake County Illinois GIS
    License

    https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/datahttps://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data

    Area covered
    Description

    The Lake County Data Extract provides parcel characteristics and tax information for all properties located in Lake County, Illinois. Casual users can find the standalone Tax Parcel Boundary Data above and Parcel Attribute Data here. The information contained in the extract is "as is", and Lake County does not in any way guarantee the correctness or accuracy of the information contained therein.

  6. c

    Lake County Maps Online

    • s.cnmilf.com
    • datasets.ai
    Updated Sep 1, 2022
    + more versions
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    Lake County Illinois GIS (2022). Lake County Maps Online [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/lake-county-maps-online-8fba8
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    Dataset updated
    Sep 1, 2022
    Dataset provided by
    Lake County Illinois GIS
    Area covered
    Lake County
    Description

    Lake County's most comprehensive interactive web mapping application and GIS data viewer. View data, run analysis tools, and create PDF documents all inside Maps Online!

  7. M

    Tax Parcels, Lake County, Minnesota

    • gisdata.mn.gov
    • data.wu.ac.at
    fgdb, gpkg, html +3
    Updated Aug 20, 2025
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    Lake County (2025). Tax Parcels, Lake County, Minnesota [Dataset]. https://gisdata.mn.gov/dataset/us-mn-co-lake-plan-tax-parcels
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    kmz, fgdb, shp, gpkg, html, jpegAvailable download formats
    Dataset updated
    Aug 20, 2025
    Dataset provided by
    Lake County
    Area covered
    Lake County, Minnesota
    Description

    The approximate representation of real property areas in Lake County, Minnesota.

  8. a

    Address Points

    • data-lakecountyil.opendata.arcgis.com
    • s.cnmilf.com
    • +4more
    Updated Sep 9, 2019
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    Lake County Illinois GIS (2019). Address Points [Dataset]. https://data-lakecountyil.opendata.arcgis.com/datasets/address-points/api
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    Dataset updated
    Sep 9, 2019
    Dataset authored and provided by
    Lake County Illinois GIS
    License

    https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/datahttps://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data

    Area covered
    Description

    Download 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 States Post Office delivery database to ensure that they are still active. New addresses are added at this time or earlier if they are made known to Lake County GIS by local data partners. Attributes DiscrpAgID through Elev reflect the NENA NG-911 / State of Illinois GIS Data model. Additional local data fields have also been included. The fields LSt_PreDir, LSt_Name, LSt_Type and LSt_PosDir are formatted according to United States Postal Service standards.Update Frequency:This dataset is updated on a weekly basis.

  9. K

    Lake County, Florida Tax Parcels

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated May 7, 2019
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    Lake County, Florida (2019). Lake County, Florida Tax Parcels [Dataset]. https://koordinates.com/layer/100957-lake-county-florida-tax-parcels/
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    pdf, mapinfo tab, dwg, geodatabase, csv, kml, mapinfo mif, geopackage / sqlite, shapefileAvailable download formats
    Dataset updated
    May 7, 2019
    Dataset authored and provided by
    Lake County, Florida
    Area covered
    Description

    Geospatial data about Lake County, Florida Tax Parcels. Export to CAD, GIS, PDF, CSV and access via API.

  10. d

    1861 Lake County Map

    • catalog.data.gov
    • gimi9.com
    • +1more
    Updated Sep 1, 2022
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    Lake County Illinois GIS (2022). 1861 Lake County Map [Dataset]. https://catalog.data.gov/dataset/1861-lake-county-map-22b1e
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    Dataset updated
    Sep 1, 2022
    Dataset provided by
    Lake County Illinois GIS
    Area covered
    Lake County
    Description

    1861 Lake County Map

  11. a

    Lake County RW Maintenance Maps

    • hub.arcgis.com
    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    Updated May 8, 2019
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    Lake County Maps & Apps (2019). Lake County RW Maintenance Maps [Dataset]. https://hub.arcgis.com/maps/lcgis::lake-county-rw-maintenance-maps
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    Dataset updated
    May 8, 2019
    Dataset authored and provided by
    Lake County Maps & Apps
    Area covered
    Description

    Lake County Right of Way Maintenance Maps

  12. u

    Utah Salt Lake County Parcels LIR

    • opendata.gis.utah.gov
    • hub.arcgis.com
    Updated Nov 20, 2019
    + more versions
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    Utah Automated Geographic Reference Center (AGRC) (2019). Utah Salt Lake County Parcels LIR [Dataset]. https://opendata.gis.utah.gov/items/6f900727e16d4ce1a83f2a1ec1d82e60
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    Dataset updated
    Nov 20, 2019
    Dataset authored and provided by
    Utah Automated Geographic Reference Center (AGRC)
    License

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

    Area covered
    Description

    Update information can be found within the layer’s attributes and in a table on the Utah Parcel Data webpageunder LIR Parcels.In Spring of 2016, the Land Information Records work group, an informal committee organized by the Governor’s Office of Management and Budget’s State Planning Coordinator, produced recommendations for expanding the sharing of GIS-based parcel information. Participants in the LIR work group included representatives from county, regional, and state government, including the Utah Association of Counties (County Assessors and County Recorders), Wasatch Front Regional Council, Mountainland and Bear River AOGs, Utah League of Cities and Towns, UDOT, DNR, AGRC, the Division of Emergency Management, Blue Stakes, economic developers, and academic researchers. The LIR work group’s recommendations set the stage for voluntary sharing of additional objective/quantitative parcel GIS data, primarily around tax assessment-related information. Specifically the recommendations document establishes objectives, principles (including the role of local and state government), data content items, expected users, and a general process for data aggregation and publishing. An important realization made by the group was that ‘parcel data’ or ‘parcel record’ products have a different meaning to different users and data stewards. The LIR group focused, specifically, on defining a data sharing recommendation around a tax year parcel GIS data product, aligned with the finalization of the property tax roll by County Assessors on May 22nd of each year. The LIR recommendations do not impact the periodic sharing of basic parcel GIS data (boundary, ID, address) from the County Recorders to AGRC per 63F-1-506 (3.b.vi). Both the tax year parcel and the basic parcel GIS layers are designed for general purpose uses, and are not substitutes for researching and obtaining the most current, legal land records information on file in County records. This document, below, proposes a schedule, guidelines, and process for assembling county parcel and assessment data into an annual, statewide tax parcel GIS layer. gis.utah.gov/data/sgid-cadastre/ It is hoped that this new expanded parcel GIS layer will be put to immediate use supporting the best possible outcomes in public safety, economic development, transportation, planning, and the provision of public services. Another aim of the work group was to improve the usability of the data, through development of content guidelines and consistent metadata documentation, and the efficiency with which the data sharing is distributed.GIS Layer Boundary Geometry:GIS Format Data Files: Ideally, Tax Year Parcel data should be provided in a shapefile (please include the .shp, .shx, .dbf, .prj, and .xml component files) or file geodatabase format. An empty shapefile and file geodatabase schema are available for download at:At the request of a county, AGRC will provide technical assistance to counties to extract, transform, and load parcel and assessment information into the GIS layer format.Geographic Coverage: Tax year parcel polygons should cover the area of each county for which assessment information is created and digital parcels are available. Full coverage may not be available yet for each county. The county may provide parcels that have been adjusted to remove gaps and overlaps for administrative tax purposes or parcels that retain these expected discrepancies that take their source from the legally described boundary or the process of digital conversion. The diversity of topological approaches will be noted in the metadata.One Tax Parcel Record Per Unique Tax Notice: Some counties produce an annual tax year parcel GIS layer with one parcel polygon per tax notice. In some cases, adjacent parcel polygons that compose a single taxed property must be merged into a single polygon. This is the goal for the statewide layer but may not be possible in all counties. AGRC will provide technical support to counties, where needed, to merge GIS parcel boundaries into the best format to match with the annual assessment information.Standard Coordinate System: Parcels will be loaded into Utah’s statewide coordinate system, Universal Transverse Mercator coordinates (NAD83, Zone 12 North). However, boundaries stored in other industry standard coordinate systems will be accepted if they are both defined within the data file(s) and documented in the metadata (see below).Descriptive Attributes:Database Field/Column Definitions: The table below indicates the field names and definitions for attributes requested for each Tax Parcel Polygon record.FIELD NAME FIELD TYPE LENGTH DESCRIPTION EXAMPLE SHAPE (expected) Geometry n/a The boundary of an individual parcel or merged parcels that corresponds with a single county tax notice ex. polygon boundary in UTM NAD83 Zone 12 N or other industry standard coordinates including state plane systemsCOUNTY_NAME Text 20 - County name including spaces ex. BOX ELDERCOUNTY_ID (expected) Text 2 - County ID Number ex. Beaver = 1, Box Elder = 2, Cache = 3,..., Weber = 29ASSESSOR_SRC (expected) Text 100 - Website URL, will be to County Assessor in most all cases ex. webercounty.org/assessorBOUNDARY_SRC (expected) Text 100 - Website URL, will be to County Recorder in most all cases ex. webercounty.org/recorderDISCLAIMER (added by State) Text 50 - Disclaimer URL ex. gis.utah.gov...CURRENT_ASOF (expected) Date - Parcels current as of date ex. 01/01/2016PARCEL_ID (expected) Text 50 - County designated Unique ID number for individual parcels ex. 15034520070000PARCEL_ADD (expected, where available) Text 100 - Parcel’s street address location. Usually the address at recordation ex. 810 S 900 E #304 (example for a condo)TAXEXEMPT_TYPE (expected) Text 100 - Primary category of granted tax exemption ex. None, Religious, Government, Agriculture, Conservation Easement, Other Open Space, OtherSalt Lake County Tax Exempt codes below:AE - Airport - ExemptCC - Commercial Common AreaCE - Conservation EasementCM - CemeteryEC - Exempt CharitableEE - Exempt EducationER - Exempt ReligiousGB - GreenbeltHE - Homeowners Assoc ExemptIL - In LieuIR - Irrigation CompanyMC - Master CardOE - Owner ExemptPE - Part ExemptPR - Pro-RatedPT - Privilege TaxPY - Privilege Tax on a YieldSA - State AssessedSC - State and Cnty AssessedSE - Special - ExemptSU - Salt Lake - Utah CntyTD - Divided Tax DistrictUI - Undivided_Interest TAX_DISTRICT (expected, where applicable) Text 10 - The coding the county uses to identify a unique combination of property tax levying entities ex. 17ATOTAL_MKT_VALUE (expected) Decimal - Total market value of parcel's land, structures, and other improvements as determined by the Assessor for the most current tax year ex. 332000LAND _MKT_VALUE (expected) Decimal - The market value of the parcel's land as determined by the Assessor for the most current tax year ex. 80600PARCEL_ACRES (expected) Decimal - Parcel size in acres ex. 20.360PROP_CLASS (expected) Text 100 - Residential, Commercial, Industrial, Mixed, Agricultural, Vacant, Open Space, Other ex. ResidentialSalt Lake County Property Class codes below:R - Residential / CondoC - CommercialI - IndustrialRE - RecreationalA - AgriculturalMH - Multi HousingMore information about the PROP_CLASS and PROP_TYPE for Salt Lake County can be found at http://slco.org/assessor/new/queryproptyp.cfmPROP_TYPE (expected) Text 100 - Single Family Res.,Townhome, CondoPRIMARY_RES (expected) Text 1 - Is the property a primary residence(s): Y'(es), 'N'(o), or 'U'(nknown) ex. YHOUSING_CNT (expected, where applicable) Text 10 - Number of housing units, can be single number or range like '5-10' ex. 1SUBDIV_NAME (optional) Text 100 - Subdivision name if applicable ex. Highland Manor SubdivisionBLDG_SQFT (expected, where applicable) Integer - Square footage of primary bldg(s) ex. 2816BLDG_SQFT_INFO (expected, where applicable) Text 100 - Note for how building square footage is counted by the County ex. Only finished above and below grade areas are counted.FLOORS_CNT (expected, where applicable) Decimal - Number of floors as reported in county records ex. 2FLOORS_INFO (expected, where applicable) Text 100 - Note for how floors are counted by the County ex. Only above grade floors are countedBUILT_YR (expected, where applicable) Short - Estimated year of initial construction of primary buildings ex. 1968EFFBUILT_YR (optional, where applicable) Short - The 'effective' year built' of primary buildings that factors in updates after construction ex. 1980CONST_MATERIAL (optional, where applicable) Text 100 - Construction Material Types, Values for this field are expected to vary greatly by county ex. Wood Frame, Brick, etc Contact: Sean Fernandez, Cadastral Manager (email: sfernandez@utah.gov; office phone: 801-209-9359)

  13. d

    Lake County, IL 2018 Employee Compensation

    • catalog.data.gov
    • hub.arcgis.com
    • +1more
    Updated Apr 5, 2025
    + more versions
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    Lake County Illinois GIS (2025). Lake County, IL 2018 Employee Compensation [Dataset]. https://catalog.data.gov/dataset/lake-county-il-2018-employee-compensation-27837
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    Dataset updated
    Apr 5, 2025
    Dataset provided by
    Lake County Illinois GIS
    Area covered
    Illinois, Lake County
    Description

    Link to Lake County, IL website.

  14. a

    2022 Lake County Aerial - NE Corner

    • data-lakecountyil.opendata.arcgis.com
    • hub.arcgis.com
    Updated Mar 9, 2023
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    Lake County Illinois GIS (2023). 2022 Lake County Aerial - NE Corner [Dataset]. https://data-lakecountyil.opendata.arcgis.com/documents/05abbf83da924abdb9cf063365349cf7
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    Dataset updated
    Mar 9, 2023
    Dataset authored and provided by
    Lake County Illinois GIS
    Description

    This three inch pixel resolution color aerial photography was flown between March 19 and March 26, 2022. The files are provided in TIF format which is supported by most GIS and CAD software packages. Its intended usage for viewing is 1" = 100'. The photography has been orthorectified to meet National Map Accuracy Standards for its capture scale. The images are georeferenced to the Illinois State Plane, Eastern Zone. The data set is tiled for dissemination into separate tiles, each of which is 5280 feet (1 mile) on a side.This imagery is provided on an as-is basis, with no guarantees of accuracy or suitability for any particular purpose. Lake County, Illinois, assumes no responsibility for conclusions or decisions reached on the basis of this data.This dataset is projected using the Transverse Mercator map projection. The grid coordinate system used is the Illinois State Plane Coordinate System, East Zone (Zone Number Zone 3776, FIPS 1201), with ground coordinates expressed in U.S. Survey Feet.

  15. d

    LakeCountyParcels

    • catalog.data.gov
    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    • +1more
    Updated Nov 22, 2025
    + more versions
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    Lake County Illinois GIS (2025). LakeCountyParcels [Dataset]. https://catalog.data.gov/dataset/tax-parcels-806d1
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    Dataset updated
    Nov 22, 2025
    Dataset provided by
    Lake County Illinois GIS
    Description

    Download 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 going back to the mid 1800's, following generally accepted practices used in Public Land Survey System states, and following guidelines established by the Illinois Department of Revenue and the International Association of Assessment Officials. Lake County's parcel coverage is based on resolving the accumulated evidence of all of the legal documents surrounding a particular parcel or subdivision, and not the result of a countywide resurvey. These parcel boundaries are intended to be a visual inventory of property for tax and other administrative purposes; they are not intended to be used in place of an on-site survey or for the precise determination of property corners or PLSS features based on GIS coordinates. In Illinois, only a registered professional land surveyor is authorized to determine boundary locations. Included are the tax parcel boundaries, represented as polygons and centroids, for all changes resulting from legal records submitted to the Recorder of Deeds up to December 31st of the preceding year, as well as any court orders, municipal annexations and other transactions which impact the tax parcel boundaries. NOTE: The ONLY attribute included is the Property Index Number, or PARCEL_NUM. Additional assessment attribute data can be downloaded here This parcel layer is used for tax assessment purposes and for a variety of other local government functions. It changes often, both spatially and in its attribution, based on divisions or consolidations, the sale of property and other transactions. Example: PIN 08-17-304-014 can be interpreted as follows: Township 08, Section 17, Block 304, Parcel 014. Note that the first digit of block, "3" in this example, signifies that the parcel lies in quarter section 3. The quarter sections are labeled from 1 through 4, representing the northwest, northeast, southwest and southeast quarter sections, respectively. Update Frequency: This dataset is updated on a weekly basis.

  16. g

    1939 Lake County Aerial - NW Quarter

    • gimi9.com
    • catalog.data.gov
    • +3more
    Updated Aug 9, 2016
    + more versions
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    (2016). 1939 Lake County Aerial - NW Quarter [Dataset]. https://gimi9.com/dataset/data-gov_1939-lake-county-aerial-nw-quarter-0d1f3
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    Dataset updated
    Aug 9, 2016
    Description

    This two foot pixel resolution black and white aerial photography was flown on various dates in July and August 1939. They were scanned in 2001, and georeferenced in 2002. This data should NOT be used at a scale larger than 1 inch = 400 feet. Due to the lack of sufficient camera calibration information, errors will increase towards the margin of each underlying photo, although this effect has been minimized by cropping individual photos to make this mosaic. Since these photos were scanned from paper prints, local distortions (from the media stretching and/or shrinking) may be present as well as pen marks and fading. Caution should be used in interpreting features in this photography with reference to current conditions. In particular, many roads and road intersections have been realigned in the more than 60 years since this photography was taken. This historic aerial photography was captured in digital form as the result of a cooperative project between the Illinois State Geological Survey and the Geographic Information Systems (GIS) and Mapping Division of the Lake County Department of Information Technology. It is part of a statewide program to preserve the oldest known extensive aerial photography for future generations. The original photography was performed by the U.S. Department of Agriculture as part of a nation-wide program for use in agricultural assessment. Since the original negatives became unstable and were destroyed by the National Archives in the 1980's, only paper prints remain. A set of paper prints representing the best available quality was assembled from the collections of several agencies.

  17. A

    2002 Lake County Aerial - SE Quarter

    • data.amerigeoss.org
    • gimi9.com
    • +3more
    html
    Updated Jul 31, 2019
    + more versions
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    United States[old] (2019). 2002 Lake County Aerial - SE Quarter [Dataset]. https://data.amerigeoss.org/th/dataset/2002-lake-county-aerial-se-quarter
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    htmlAvailable download formats
    Dataset updated
    Jul 31, 2019
    Dataset provided by
    United States[old]
    Description

    This six inch pixel resolution black and white aerial photography was flown between April 13, 2002 and April 26, 2002 at a negative scale of 1" = 660' (a scale ratio of 1:7,920) flying at an altitude of 3,960 feet above mean terrain. The files are provided in JPEG2000, an open format supported by most GIS and CAD software packages. Its intended usage for viewing is 1" = 100'. The photography has been orthorectified to meet National Map Accuracy Standards for its capture scale. The images are georeferenced to the Illinois State Plane, Eastern Zone, using the NAD83 HARN horizontal datum. The data set is tiled for dissemination into many separate tiles. Each tile is a section in the Public Land Survey System. The first two digits are the township, the next two are the range and the final two are the section.

  18. a

    Forest Preserve Boundaries

    • data-lakecountyil.opendata.arcgis.com
    • catalog.data.gov
    • +4more
    Updated Nov 18, 2016
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    Lake County Illinois GIS (2016). Forest Preserve Boundaries [Dataset]. https://data-lakecountyil.opendata.arcgis.com/datasets/lakecountyil::forest-preserve-boundaries
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    Dataset updated
    Nov 18, 2016
    Dataset authored and provided by
    Lake County Illinois GIS
    License

    https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/datahttps://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data

    Area covered
    Description

    Download 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.

  19. c

    Federal Township Plats - 1840

    • s.cnmilf.com
    • catalog.data.gov
    • +2more
    Updated Nov 15, 2024
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    Lake County Illinois GIS (2024). Federal Township Plats - 1840 [Dataset]. https://s.cnmilf.com/user74170196/https/catalog.data.gov/dataset/federal-township-plats-1840-5414e
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    Dataset updated
    Nov 15, 2024
    Dataset provided by
    Lake County Illinois GIS
    Description

    This dataset is a derivative of the Federal Township Plats for Lake County, Illinois, the originals of which were captured on a high-resolution scanner by the Illinois State Archives. The Lake County GIS/Mapping division received permission to acquire and georeference these images using ERDAS Imagine. Since the source material was distorted in an unsystematic way due to the rigors of time and points of reference were abundant, the rubber sheeting model in Imagine with the linear option was chosen to rectify the images. The USGS delineations of the section corners for their 1:24,000 scale 7.5 minute quadrangles were chosen as a base because they are a publicly available resource that exists for the entire state of Illinois should any other counties or organizations wish to make a similar product. This final product consists of a mosaic of the townships in Lake County also created in Imagine using their mosaic tool with each township being cropped to its border in the process.

  20. d

    Lake County Wetland Inventory Data Dictionary

    • catalog.data.gov
    • data-lakecountyil.opendata.arcgis.com
    • +1more
    Updated Mar 17, 2023
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    Lake County Illinois GIS (2023). Lake County Wetland Inventory Data Dictionary [Dataset]. https://catalog.data.gov/dataset/lake-county-wetland-inventory-data-dictionary-3504e
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    Dataset updated
    Mar 17, 2023
    Dataset provided by
    Lake County Illinois GIS
    Description

    An in-depth description of the LCWI GIS dataset outlining terms of use, update frequency, attribute explanations, and more.

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Lake County Illinois GIS (2025). Lake County Boundary [Dataset]. https://catalog.data.gov/dataset/lake-county-boundary-5e5b4

Lake County Boundary

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23 scholarly articles cite this dataset (View in Google Scholar)
Dataset updated
Nov 22, 2025
Dataset provided by
Lake County Illinois GIS
Description

Download In State Plane Projection Here. This is our working version of the Lake County boundary. Although technically the county's eastern border extends eastward into Lake Michigan to the state line where Illinois meets Michigan, we routinely use the Lake Michigan shoreline as our eastern boundary for mapping purposes. The north, west and south boundaries are based on a compilation of survey data which aligns well, but not perfectly, with the border as mapped by neighboring counties and the State of Wisconsin, which forms the northern boundary of the county. Update Frequency: This dataset is updated on a weekly basis.

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