Of 16 counties in the Pine Tree State, Somerset County is third in terms of its size (3 million acres). Somerset County is in the Northwest Maine region. The total value of nearly 3,000 acres of residential land recently listed for sale in Somerset County, Maine, was around $55 million. The average price of residential land for sale in Somerset County was $335,004. Browse all residential land and rural property for sale in Maine to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.