Bethany Beach is an incorporated town in Sussex County, Delaware, United States. According to the 2010 Census Bureau figures, the population of the town is 1,060; however, during the summer months some 15,000 more populate the town as vacationers. It is part of the Salisbury, MD-DE Metropolitan Statistical Area. Bethany Beach, South Bethany and Fenwick Island are popularly known as "The Quiet Resorts".