The combined value of farms, hunting land and other rural land and acreage for sale in Florida's Martin County recently on Land.com was nearly $917 million. This represents almost 8,000 acres of land for sale in Martin County. Martin County ranks 38th out of 67 counties in the Sunshine State for the combined amount of land currently advertised for sale. Among cities in Martin County with farms, rural land, hunting land and other land for sale, Palm City featured the most land for sale. Based on its natural assets, Martin County's economy is dependent on tourism and recreation. Martin County is the 39th biggest county (753 square miles) in Florida. It's located in the Southeast & The Keys Florida region of the state.