Dover Beaches South, more commonly known as Ortley Beach, is an unincorporated community and census-designated place (CDP) located within Toms River, in Ocean County, in the U.S. state of New Jersey. As of the 2020 census, Dover Beaches South had a population of 1,331. Dover Beaches South is situated on the Barnegat Peninsula, a long, narrow barrier peninsula that separates Barnegat Bay from the Atlantic Ocean.