Irwin County is in Historic South Georgia. Of the 159 counties in the Peach State, Irwin County is 72nd in terms of its size (362 square miles). Irwin County, Georgia, includes almost 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of farms and rural land for sale here was nearly $6 million. The average price of residential acreage for sale in Irwin County was $365,550. The economy here is mainly agricultural. Browse all residential land and rural property for sale in Georgia 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.