The value of all farms, rural land, hunting land and other land for sale in Ottawa County recently was $434 million, representing a total of 1,667 acres of land for sale in Ottawa County. Ottawa County ranks third out of 83 counties in the Great Lakes State for the total number of acres of land currently advertised for sale. Holland featured the most land for sale. Manufacturing and related services are the largest economic sectors in Ottawa County. Ottawa County is the 17th biggest county (1,631 square miles) in Michigan. It's located in the West Central Michigan region of the state.