This dataset contains address points for addresses in Cook County. An ESRI Service is available at: https://hub-cookcountyil.opendata.arcgis.com/datasets/5ec856ded93e4f85b3f6e1bc027a2472_0/ Data is updated and maintained by Cook County GIS.

The Parcel 2020 feature contains tax parcel polygons for the 2020 property tax assessment at the County. This feature reflects tax parcel polygons as they existed from 1/1/2020 through 12/31/2020. An ESRI Service is available at: https://hub-cookcountyil.opendata.arcgis.com/datasets/577d80fcbf0441a780ecdfd9e1b6b5c2_0/explore

Forest Preserve District of Cook County boundaries. To view or use these shapefiles, compression software and special GIS software, such as ESRI ArcGIS, is required.

This feature layer contains one point for every address in Cook County. Data is updated and maintained by Cook County GIS. If you plan on downloading this dataset it is recommended to use the File Geodatabase or Spreadsheet options. The shapefile format may not work for larger datasets.

Created for all users to view and understand transportation modes within Cook County. GIS department maintains all GIS feature with ETSB & DOTH updating street feature. Service published in 2016. Data is updated as needed. Street midlines are set to display at 1:35,000 in ArcGIS Online.

Cook County GIS Department map of municipal boundaries in Cook Cook County, Illinois in PDF format. Includes major streets, waterbodies, rail, Cook County Forest Preserve, and municipal boundaries.

This layer contains polygons representing land that is under the jurisdiction of the Illinois Nature Preserves Commission (INPC), being designated either as a Nature Preserve, Nature Preserve buffer, or Land & Water Reserve and lying within the boundaries of the Forest Preserve District of Cook County. Actual nature preserve boundaries may vary slightly from GIS polygons shown and should be verified with legal descriptions provided by INPC and Cook County Recorder of Deeds. For more information on Illinois Nature Preserves and the INPC, please visit: Illinois Nature Preserves Commission WebsiteSource data is maintained by the Forest Preserve District's Planning and Development Department (GIS Section) and uploaded to this layer daily.

Trails within the Forest Preserve District of Cook County. To view or use these shapefiles, compression software and special GIS software, such as ESRI ArcGIS, is required.

Suburban Cook County Election Precincts maintained by the Cook County Clerk's Election Department. Not included are the City of Chicago Election Precincts which are maintained by the Chicago Board Of Elections. An ArcGIS Service is available at: https://hub-cookcountyil.opendata.arcgis.com/datasets/0e91b48d49744346be343f0cb99d25bd_0/

Voting District Project of the Census Redistricting Data Program commenced in Summer of 2017 to establish the state’s Voting precincts within the bureau’s tiger geography. The initial phase used the Bureau’s GUPS plugin for QGIS to update the districts from the 2010 round, and then a secondary verification phase took place to ensure the updated voting districts were properly enacted into Tiger geographic files. A post census effort took place in December 2021 to cut the number of precincts down countywide to 1430. Election Data Services conducted Phase 2 of the Census Redistricting Data Program for the State of Illinois, as well as implemented changes made post census in Cook County.

Precincts are updated as needed before every election by the Cook County Clerk's Elections Department.

The Public Land Survey System (PLSS) is the way land in the United States is subdivided, it forms the foundation of Cook County's cadastral system for identifying and locating land records. Tax parcels are identified using township and section notation, in a modified format. The PLSS serves as a way for users to navigate the parcel geodatabase. This PLSS feature data set is intended to correspond to tax pages on the Cook County Tax Maps. They should not be used for measurement or surveyor purposes. In addition, the parcel attributes PINA (area/township) and PINSA (subarea/section) do not necessarily correspond to the PLSS township and section polygon in which a given parcel resides. The PLSS data is modeled as a single composite network coverage that encompasses townships (area), sections (subarea), quarter sections, and half quarter section. Tax map pages, which typically correspond to half quarter sections (in an east-west split), are modeled as a region subclass in the LANDFABRIC layer. If an indigenous people's reserve was present on the tax map, it was digitized to create subpolygons of the half-quarter section, and those polygons were attributed with the name of the reserve. Within this PLSS data set, a half-quarter section is the smallest polygon unit, except in cases where an Indigenous People's Reserve line is present. The cadastral data for Cook County have previously not been digital nor automated. This project is the initial automation for this information. This database was designed to represent a continuous, non-overlapping spatial database accounting for all land area in Cook County.The PLSS is updated as needed.

Panchromatic aerial imagery flown in 1998 for Cook County, Illinois at 6 inch pixel resolution.It is recommended that the GeoService URL is used for GIS applications, rather than downloading data.

Cook County, Illinois Department of Transportation and Highways expanded GIS data for highway road assets including striping, curbs, raised medians, linear reference system (LRS), mile markers, mileposts, traffic signals, construction projects, bridges and survey monumentation.

MissionThe Clerk of the Circuit Court serves the citizens of Cook County and the participants in the judicial system in an efficient, effective and ethical manner. All services, information and court records are provided with courtesy and cost efficiency.Mandates and Key ActivitiesMandated by Illinois Fine and Fee Statutes to collect and disburse all filing fees and fines for the Circuit Court (705 ILCS 105/27.2A) and is governed by the Illinois Clerks of Court Act (705.ILCS 105).Services more than 400 judges who hear traffic, civil, criminal, juvenile, and all other types of cases originating in Chicago and Suburban Cook County.Deploys electronic tools such as document imaging and e-filing mechanisms to enable the Clerk’s Office to elevate employee effectiveness, proficiency and improvement in customer service.Partners with the Chief Judge to deploy a touch screen interface allowing judges to enter court orders electronically in the implementation of the Interactive Orders System (IOS).History of GIS Feature DevelopmentThe GIS feature was first developed in 2012 by the Cook County GIS Department under guidance of the Circuit Court of Cook County. The Circuit Court provided a document called the Circuit Court of Cook County Directory which described the municipalities and townships served by each County Courthouse. Cook County GIS then merged existing municipal and township boundaries to create accurate boundaries of the six Circuit Court Municipal Districts.

Cook County GIS Dept map of Commissioner District 10

Cook County GIS Dept map of Cook County Facilities in PDF format. The map shows all public Cook County Facilities, municipalities, Cook County highway jurisdiction, Cook County Commissioner Districts, major streets, highways, and water bodies.

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Face refers to the areal (polygon) topological primitives that make up MTDB. A face is bounded by one or more edges; its boundary includes only the edges that separate it from other faces, not any interior edges contained within the area of the face. The Topological Faces Shapefile contains the attributes of each topological primitive face. Each face has a unique topological face identifier (TFID) value. Each face in the shapefile includes the key geographic area codes for all geographic areas for which the Census Bureau tabulates data for both the 2020 Census and the annual estimates and surveys. The geometries of each of these geographic areas can then be built by dissolving the face geometries on the appropriate key geographic area codes in the Topological Faces Shapefile.

Location of hospital point features that are publicly accessible within Cook County. Service published in 2016. Cook County GIS and Cook County Real Estate maintain Cook County Government Facilities. Other Government Facilities, Parks, Hospitals, Schools, and Cemeteries created in 2012, updates by Cook County GIS as provided by other agencies.

Shelters within the Forest Preserve District of Cook County. To view or use these shapefiles, compression software and special GIS software, such as ESRI ArcGIS, is required.

This file is a digital geospatial Environmental Systems Research Institute (Esri) ArcGIS polygon feature class of Municipal Incorporation Inventory in Cook County, Illinois. This Municipal Incorporation Inventory feature class is established as a polygon feature class containing a record for each identifiable municipal incorporation transaction. This feature class is added to the Cook County’s existing enterprise geodatabase schema.

Cook County GIS Dept map of Commissioner District 8