 The census-designated place of Sunset Beach and its population of 971 as of the 2010 census was annexed by Huntington Beach in 2011.The elevation is 5.3 feet above sea level and the community is stretched out along Pacific Coast Highway bracketed by the ocean and Huntington Harbour.Sunset Beach was established in 1905 and developed as a result of the 1920 discovery of oil in the Huntington Beach Oil Field.