A total of around 100,000 acres were listed for sale in Allegan County, Michigan, recently; the combined value of all Allegan County land and rural real estate for sale was around $279 million. Allegan County ranks ninth in Michigan based on the total amount of acres of land for sale of the 83 counties in Michigan. Of all land for sale in Allegan County, Allegan featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Allegan County. Allegan County is the 14th largest county (1,833 square miles) in Michigan. It's located in the Southwest Michigan region of the state.