Benton County is located in the northwest part of the U.S. state of Indiana, along the border with Illinois. As of 2020, the county's population was 8,719. It contains six incorporated towns as well as several small unincorporated settlements; it is divided into 11 townships which provide local services. The county seat is Fowler.

Vermilion County is a county in the eastern part of the U.S. state of Illinois, between the Indiana border and Champaign County. It was established in 1826 and was the 45th of Illinois' 102 counties. According to the 2020 United States census, it had a population of 74,188. It contains 21 incorporated settlements; the county seat and largest city is Danville.