A combined 5,000 acres were listed for sale in Saint Tammany Parish recently; the overall value of all Saint Tammany Parish farms and rural land for sale was $304 million. Saint Tammany Parish ranks first in the Bayou State for the total number of acres of land currently advertised for sale. Among cities in Saint Tammany Parish with land for sale, Covington featured the most land for sale. Saint Tammany Parish is Louisiana's 12th largest county (1,095 square miles). It's located in the Greater New Orleans Louisiana region of the state.