Cayucos State Beach is a protected beach in the state park system of California, United States. It is located in Cayucos, San Luis Obispo County. The sandy beach environment supports uses of swimming and surfing. Prehistorically this general area of the central coast was inhabited by the Chumash people, who settled the coastal San Luis Obispo area approximately 10,000 to 11,000 BCE, including a large village to the south of Cayucos at Morro Creek. The 16-acre (6.5 ha) park was established in 1940.