Old Orchard Beach is a town and census-designated place in York County, Maine, United States. The population was 8,624 at the 2010 census. It is part of the Portland−South Portland−Biddeford, Maine Metropolitan Statistical Area.Located on the inner side of Saco Bay on the Atlantic Ocean, the town is a popular summer beach destination. The downtown contains many tourist-oriented businesses, including clam shacks and T-shirt shops. A wooden pier on the beach contains many other tourist businesses, including a variety of souvenir shops. The seven mile long beach stretching away from the downtown is lined with many beach residential properties, condominiums, motels and bed and breakfasts.