Pismo Beach is a city in San Luis Obispo County, in the Central Coast area of California, United States. The estimate population was 7,931 at 2014, up from 7,655 at the 2010 census. It is part of the Five Cities Area, a cluster of cities in that area of San Luis Obispo County. Its former motto was "Clam Capital of the World", though it is no longer used due to over-harvesting.