Geographic Information Systems (GIS) aims to optimize Cook County's geospatial investment in information technology through collaboration, policy, strategic planning and services. The following interactive map applications provide easy access to Cook County GIS information.
CookViewer, can connect you to a wealth of dynamic geographic information and data in Cook County. You can search for parcel information, view high resolution aerial imagery, see elevation contours, find political districts of properties, and customize the map layers you want to see.
Connect to Cook provides business owners, residents and entrepreneurs with free access to critical information to help them open a business or relocate to Cook County. The available data includes map layers such as transportation infrastructure, recreation, housing, business and manufacturing locations. The tool can help users determine customer communities, display potential competitor locations and analyze the population within a specific drive-time or distance.
An interactive mapping application which allows users to display tax increment dollars and maps of Tax Increment Financing Districts in Cook County. Users can export TIF Revenue information dating back to 1983 for research and analysis.
An interactive map of all Cook County Facilities that can be viewed with mass transit lines (trains and buses). Hovering on a facility provides contact information, while clicking on the point displays a picture of the facility.
An interactive map that allows recently released detainees and their families the ability to locate the nearest social service providers to any location in Cook County. Print or save a PDF document with a list of the providers along with their contact information.
An interactive map of current construction activity on the County's highways. Clicking on a project provides detailed information for commuters to plan their trip. Additionally, the official project flyer can be displayed.
An interactive map of fishing lakes located in the Forest Preserves across the County. Clicking on a fish will display a detailed map of that lake, including depth measurements.
An interactive map that displays the road jurisdiction of all Township, Cook County, and State of Illinois roads in different colors, orange, red, and green respectively. Search by street name, county route number, city, or address to find roads. The application can be used as a reference for Cook County Department of Transportation and Highways permits.
An interactive map journal that visualizes the growth of cities and villages in Cook County, Illinois. The records displayed show the incorporations, annexations, disconnections, and court orders that have changed municipal boundaries from 1831 to the present.
Cook County GIS Data
To download free GIS data, please visit the Cook County Open Data Portal. If you are interested in acquiring custom maps or data from the County, please visit the Cook County Map Center. In the Center you can choose between custom orders or purchase the Atlas of Cook County.
If you have credentials to our Municpal Government Portal, please click here: Municpal Village Portal
The following standard County maps are available for viewing or download.
Please note some map files are prepared for large print output and can be large in file size.
Commissioner District Maps
Refer to the Commissioner District map in the County Maps section above for an index of all districts.
- District 1
- District 2
- District 3
- District 4
- District 5
- District 6
- District 7
- District 8
- District 9
- District 10
- District 11
- District 12
- District 13
- District 14
- District 15
- District 16
- District 17
All map PDF files below are under 1.5 MB in size.
Township Index Map Detailed township map key showing township boundaries
Barrington Township - Map 1 Township 42 North Range 9 East, Cook County, IL Including: Barrington, Barrington Hills, East Dundee, Hoffman Estates, Inverness and South Barrington
Palatine Township - Map 2 Township 42 North Range 10 East, Cook County, IL Including: Barrington, Palatine, South Barrington, Inverness, Hoffman Estates, Arlington Heights, Schaumburg
Wheeling Township - Map 3 Township 42 North Range 11 East, Cook County, IL Including: Buffalo Grove, Arlington Heights, Palatine, Rolling Meadows, Wheeling, Northbrook, Prospect Heights, Mount Prospect, Des Plaines, Glenview
Northfield Township - Map 4 Township 42 North Range 12 East, Cook County, IL Including: Wheeling, Deerfield, Northbrook, Glencoe, Northfield, Glenview, Wilmette, Prospect Heights
New Trier and Evanston Townships - Map 5 Township 42 North Range 13 East, Cook County IL Including: Glencoe, Winnetka, Northfield, Glenview, Kenilworth, Wilmette, Evanston
Hanover Park Township - Map 6 Township 41 North Range 9 East, Cook County, IL Including: Elgin, Hoffman Estates, Streamwood, Schaumburg, Bartlett, Hanover Park
Schaumburg Township - Map 7 Township 41 North Range 10 East, Cook County, IL Including: Hoffman Estates, Schaumburg, Hanover Park, Rolling Meadows, Elk Grove Village, Roselle, Streamwood
Elk Grove Township and Town of Jefferson - Map 8 Township 41 North Range 11 East, Cook County, IL Including: Rolling Meadows, Arlington Heights, Mount Prospect, Des Plaines, Elk Grove Village, Chicago
Maine Township and Town of Jefferson - Map 9 Township 41 North Range 12 East, Cook County, IL Including: Des Plaines, Glenview, Morton Grove, Niles, Park Ridge, Chicago, Rosemont
Niles and Rogers Park Townships and Town of Jefferson and Evanston - Map 10 Township 41 North Range 13 East, Cook County, IL Including: Glenview, Golf, Morton Grove, Niles, Chicago, Skokie, Evanston, Lincolnwood
Leyden, Norwood Park Townships and Town of Jefferson - Map 11 Township 40 North Range 12 East, Cook County, IL Including: Chicago, Bensenville, Rosemont, Park Ridge, Harwood Heights, Norridge, Schiller Park, Franklin Park, River Grove, Elmwood Park, Melrose Park, Northlake
Town of Jefferson, Norwood Park Township and West Town - Map 12 Township 40 North Range 13 East, Cook County, IL Including: Chicago, Harwood Heights, Norridge
Lake View Township, North and West Towns - Map 13 Township 40 North Range 14 East, Cook County, IL Including: Chicago
Proviso and Riverside Township and River Forest - Map 14 Township 39 North Range 12 East, Cook County, IL Including: Northlake, Stone Park, Melrose Park, River Forest, Berkeley, Hillside, Bellwood, Maywood, Forest Park, Broadview, Westchester, North Riverside, Riverside, Brookfield, La Grange Park, Western Springs, Elmhurst, Oak Brook
Berwyn, Cicero, Oak Park and Stickney Townships and West and South Towns - Map 15 Township 39 North Range 13 East, Cook County, IL Including: Oak Park, Berwyn, Cicero, Stickney, Chicago
West, South and North Towns (Chicago) - Map 16 Township 39 North Range 14 East, Cook County, IL Including: Chicago
Lyons Township - Map 17 Township 38 North Range 12 East, Cook County, IL Including: Hinsdale, Western Springs, La Grange, Brookfield, Lyons, McCook, Summit, Indian Head Park, Burr Ridge, Countryside, Willow Springs, Hodgkins, Bedford Park, Bridgeview, Justice, Hickory Hills
Stickney Township and Town of Lake - Map 18 Township 38 North Range 13 East, Cook County, IL Including: Stickney, Forest View, Chicago, Bedford Park, Burbank
Town of Lake and Hyde Park Township - Map 19 Township 38 North Range 14 East, Cook County, IL Including: Chicago
Lemont Township - Map 20 Township 37 North Range 11 East, Cook County, IL Including: Lemont, Willow Springs
Palos and Lyons Township - Map 21 Township 37 North Range 12 East, Cook County, IL Including: Burr Ridge, Willow Springs, Palos Park, Hickory Hills, Bridgeview, Worth, Palos Hills, Palos Heights, Orland Park
Worth Township and Town of Lake - Map 22 Township 37 North Range 13 East, Cook County, IL Including: Bridgeview, Hometown, Evergreen Park, Oak Lawn, Chicago Ridge, Worth, Palos Heights, Chicago, Alsip, Crestwood, Robbins, Blue Island, Merrionette Park
Calumet and Hyde Park Townships and Town of Lake - Map 23 Township 37 North Ranges 14 & 15 East, Cook County, IL Includes: Chicago, Blue Island, Calumet Park, Riverdale
Orland Township - Map 24 Township 36 North Range 12 East, Cook County, IL Including: Orland Park, Orland Hills, Tinley Park
Bremen Township - Map 25 Township 36 North Range 13 East, Cook County, IL Including: Orland Park, Tinley Park, Crestwood, Robbins, Blue Island, Posen, Midlothian, Markham, Harvey, Oak Forest, Country Club Hills, Hazel Crest, Homewood
Thornton Township - Map 26 Township 36 North Range 14 & 15 East, Cook County, IL Including: Blue Island, Dixmoor, Riverdale, Harvey, Markham, Hazel Crest, East Hazel Crest, Homewood, Dolton, Burnham, Phoenix, South Holland, Calumet City, Lansing, Thornton, Glenwood
Rich Township - Map 27 Township 35 North Range 13 East, Cook County, IL Including: Tinley Park, Country Club Hills, Hazel Crest, Homewood, Flossmoor, Matteson, Olympia Fields, Frankfort, Richton Park, University Park, Park Forest
Bloom Township - Map 28 Township 35 North Range 14 & 15 East, Cook County, IL Including: Homewood, Flossmoor, Olympia Fields, Chicago Heights, South Chicago Heights, Park Forest, Glenwood, Lansing, Lynwood, Ford Heights, Sauk Village, Steger