The value of all land and rural real estate for sale in Cumberland County, Maine, recently was approximately $364 million, representing a total of 2,476 acres of land for sale in Cumberland County. Cumberland County ranks third out of 16 counties in the Pine Tree State for the combined amount of land currently advertised for sale. Windham had the most land for sale. Based on its natural assets, Cumberland County's economy is dependent on tourism and recreation. Cumberland County is one of the ten largest counties in Maine (1,217 square miles). It's located in the Southwest Maine region of Maine.