The value of all farms and rural land for sale in Waldo County recently was around $190 million, representing a total of 4,914 acres of land for sale in Waldo County. Waldo County ranks sixth in the Pine Tree State for the total acreage of land currently advertised for sale. Of all locations in Waldo County with land for sale, Belfast had the most land for sale. Based on its natural assets, tourism and recreation are important factors in the Waldo County economy. Waldo County is the 13th biggest county (852 square miles) in Maine. It's located in the Southwest Maine region of the state.