Cook County on the map of Illinois 2021. Cities, roads, borders and directions in Cook County of Illinois.

USA / Illinois / Cook County

Cook County is the largest county in Illinois with population of almost 6 million people. The county seat of Cook County is the city of Chicago. The total land area of Cook Country is about 945 square miles. This map shows the borders of Cook County as well as neighboring counties, including major highways and natural objecsts as of 2021. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it.


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The borders of Cook County over the map of Illinois

An image of Cook County, IL

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