A total of almost 4,000 acres were listed for sale in Nassau County recently; the overall value of all Nassau County farmsand rural real estate for sale was almost $263 million. Nassau County ranks 42nd out of 67 counties in the Everglade State for the combined amount of land currently advertised for sale. Among cities in Nassau County with farms and rural land for sale, Fernandina Beach had the most land for sale. Based on its natural assets, tourism and recreation contribute significant revenue toward Nassau County's overall GDP. Nassau County is Florida's 42nd largest county (725 square miles). It's located in the Northeast Florida region of Florida.