Land for sale in Berrien County recently totaled around $201 million and nearly 3,000 acres. Berrien County ranks seventh in the Mitten State for the combined amount of land currently advertised for sale. Among cities in Berrien County with farms and rural land for sale, Niles had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Berrien County. Berrien County is the 19th biggest county (1,581 square miles) in Michigan. It's located in the Southwest Michigan region of Michigan.