Cook County, Illinois, USA - 1,635 square miles.
Will County, IL has an area of 849 sq miles (2,199 km²).
The largest county in Illinois is McLean County with 1,184 square miles.
McLean County which is larger than Rhode Island in total land acres. Its County Seat is Bloomington a city of about 75,000 and is the largest producer of both corn and soybeans of any US County. McLean County is about 1,184 square miles in size.
Yes.
Cook County, Illinois was founded January 15, 1831.
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it would be 56%%%
Des Plaines, Illinois is in Cook County.
In general, Will County has cheaper sales taxes and prices than Cook County.
It is in Cook County.