Hamilton County is a county located in the U.S. state of Illinois. At the 2020 census, its population was 7,993. Its county seat is McLeansboro. It is located in the southern portion of the state known locally as "Little Egypt".

White County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 13,877. Its county seat is Carmi. It is located in the southern portion of Illinois known locally as "Little Egypt".