Land for sale in Montgomery County, Georgia, recently totaled almost $9 million and approximately 1,000 acres. Montgomery County ranks 150th in the Peach State for the total acreage of land currently advertised for sale. Of all locations in Montgomery County with farms, rural land, hunting land and other land for sale, Mount Vernon had the most land for sale. Montgomery County is the 127th largest county (244 square miles) in Georgia. It's located in the Historic South Georgia region of Georgia.