Big Foot Prairie's
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Big Foot Prairie is an unincorporated community and census-designated place in McHenry County, Illinois, United States. It was named a CDP for the 2020 census, at which time it had a population of 65. It is located in Chemung Township. Big Foot Prairie is located on U.S. Route 14, 5 miles (8.0 km) north of Harvard. The community extends north into Walworth County, Wisconsin, where there is a CDP of the same name in the town of Walworth.