Cook County Map, Illinois

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Cook County, Illinois

Cook County is the heart of Chicagoland. It’s massive. Over 5 million people live here, making it the second most populous county in the entire U.S. Chicago dominates the county. But there’s more to it than that.

Suburbs stretch for miles and its lakefront is a treasure. Skyscrapers define the skyline and traffic can be a nightmare. There is food from every corner of the world.

While L trains rattle overhead, parks offer green space amid the concrete. Museums and theaters abound. But it’s not all urban though. Forest preserves cover the county. Politics here is a blood sport. It’s a place of stark contrasts.

Category	Details
County Name	Cook County
County Seat	Chicago
Population	Approximately 5,120,000
Cities, Towns, and Communities	Chicago, Evanston, Oak Park, Cicero, Arlington Heights, Schaumburg, Skokie, Des Plaines, Berwyn, Oak Lawn, Orland Park, Tinley Park, and numerous other communities.
Interstates and Highways	Interstates 55, 57, 80, 90, 94, 190, 290, 294, U.S. Highways 12, 14, 20, 34, 41, Illinois Routes 50, 53, 83, 171, 394, and more.
FIPS Code	17-031
Total Area (Land and Water)	1,635 square miles (land: 945 sq mi, water: 690 sq mi)
Adjacent Counties (and Direction)	McHenry County (Northwest), Lake County (North), Berrien County, Michigan (East), Porter County, Indiana (Southeast), Lake County, Indiana (Southeast), Will County (South), DuPage County (West), Kane County (West)
Time Zone	Central Time Zone (CT)
State	Illinois
Coordinates	41.7377° N, 87.6976° W
Etymology	Named after Daniel Pope Cook, an early Illinois statesman and the first Attorney General of Illinois
Major Landmarks	Millennium Park, Willis Tower, Navy Pier, Art Institute of Chicago, Lincoln Park Zoo, Brookfield Zoo, Shedd Aquarium, Field Museum
Website	Cook County Website