Bayville is an unincorporated community within Berkeley Township in Ocean County, New Jersey. As of the 2010 United States Census, the population for ZIP Code Tabulation Area 08721 was 20,512. The area is served by the Central Regional School District, which includes Central Regional Middle School and Central Regional High School. Bayville is also home to Double Trouble State Park, where Ocean Spray manages a cranberry bog. Additionally, the community is said to be haunted by the mythical Jersey Devil.