Custer Park, IllinoisCuster Park is an unincorporated community and census designated place in Will County, Illinois, United States. Custer Park is located on Illinois Route 113 and the south bank of the Kankakee River east-southeast of Braidwood.DemographicsCuster Park first appeared as a census designated place in the 2020 U.S. census.EducationIt is in the Reed Custer Community Unit School District 255U.