The value of all farms, rural land, hunting land and other land for sale in Martin County recently was nearly $851 million, representing a total of 3,330 acres of land for sale in Martin County. Martin County ranks 40th in the Everglade State for the total acreage of land currently advertised for sale. Of all locations in Martin County with farms, rural land, hunting land and other land for sale, Palm City had the most land for sale. Based on its natural assets, tourism and recreation are important factors in the Martin County economy. Martin County is Florida's 39th largest county (753 square miles). It's located in the Southeast & The Keys Florida region of the state.