Land for sale in Calhoun County recently totaled approximately $126 million and almost 4,000 acres. Calhoun County ranks 18th in the Wolverine State for the total acreage of land currently advertised for sale. Of all land for sale in Calhoun County, Battle Creek featured the most land for sale. Manufacturing and related services are the largest economic sectors in Calhoun County. Calhoun County is the 45th largest county (718 square miles) in Michigan. It's located in the Southwest Michigan region of Michigan.