ISLAND BEACH is CLOSED, filled to capacity. Mobile Sport Fishing Vehicle access remains open. New Jersey Department of Environmental Protection sent this bulletin at 07/28/2019 10:42 AM EDT Sunday July 28, 2019 ISLAND BEACH STATE PARK is filled to capacity and closed. Mobile Sport Fishing Vehicle access remains open. We're sorry for the inconvenience and hope to see you soon! We usually reopen within 1-3 hours, depending on incoming traffic and the number of vehicles leaving from the swim areas. Island Beach State Park PO Box 37, Seaside Park, NJ 08752 Location: 2401 Central Ave., Seaside Park 732-793-0506