A total of 4,000 acres were listed for sale in Nassau County recently; the overall value of all Nassau County land and rural real estate for sale was approximately $286 million. Nassau County ranks 40th out of 67 counties in the Orange State for the combined amount of land currently advertised 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 the 42nd largest county (725 square miles) in Florida. It's located in the Northeast Florida region of Florida.