Land for sale in Illinois's White County recently totaled nearly $5 million and approximately 1,000 acres. White County ranks 65th out of 102 counties in the state for the total acreage of land currently advertised for sale. Among cities in White County with land and rural real estate for sale, Carmi featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Illinois. White County is the 56th largest county (501 square miles) in Illinois. It's located in the Southern Illinois region of the state.