Cayucos is a census-designated place located on the coast in San Luis Obispo County, California. The population was 2,943 at the 2000 census.
Prehistorically the local area was inhabited by the Chumash people, who settled the coastal San Luis Obispo area approximately 11,000 to 10,000 BC, including a large village to the South of Cayucos at Morro Creek.
In 1842, a 8,045-acre (32.56 km2) Mexican land grant called Rancho Moro y Cayucos was made to Martin Olivera and Vincente Feliz. In 1867, Captain James Cass came to Cayucos, and settled on 320 acres (1.29 km2) of this land. Cass began developing the area with his partner, Captain Ingals.
On December 7, 1987, Pacific Southwest Airlines Flight 1771, bound from Los Angeles International Airport to San Francisco, was cruising above the central California coast when a disgruntled USAir employee aboard the plane shot his ex-supervisor, both pilots and then himself, causing the airplane to crash near Cayucos. All 43 aboard perished.
Cayucos is located at(35.438390, -120.890647).
According to the United States Census Bureau, the CDP has a total area of 3.5 square miles (9.0 km²), of which, 3.1 square miles (8.0 km²) of it is land and 0.4 square miles (1.0 km²) of it (11.24%) is water.
As of the census of 2000, there were 2,943 people, 1,405 households, and 809 families residing in the CDP. The population density was 954.4 people per square mile (368.9/km²). There were 2,284 housing units at an average density of 740.7/sq mi (286.3/km²). The racial makeup of the CDP was 93.82% White, 6.80%Hispanic or Latino (of any race) , 2.17% from two or more races, 2.11% from other races, 1.26% Asian, 0.37% Native American, 0.24% African American, and 0.03% Pacific Islander.
There were 1,405 households out of which 19.6% had children under the age of 18 living with them, 46.4% were married couples living together, 7.5% had a female householder with no husband present, and 42.4% were non-families. 33.6% of all households were made up of individuals and 13.2% had someone living alone who was 65 years of age or older. The average household size was 2.08 and the average family size was 2.62.
In the CDP the population was spread out with 16.8% under the age of 18, 6.5% from 18 to 24, 24.4% from 25 to 44, 28.7% from 45 to 64, and 23.5% who were 65 years of age or older. The median age was 46 years. For every 100 females there were 91.7 males. For every 100 females age 18 and over, there were 91.1 males.
The median income for a household in the CDP was $42,841, and the median income for a family was $53,594. Males had a median income of $35,333 versus $31,359 for females. The per capita income for the CDP was $26,525. About 2.4% of families and 8.2% of the population were below the poverty line, including 7.1% of those under age 18 and 4.0% of those age 65 or over.
In the state legislature Cayucos is located in the 15th Senate District, represented by Republican Abel Maldonado, and in the 33rd Assembly District, represented by Republican Sam Blakeslee. Federally, Cayucos is located in California's 23rd congressional district, which has a Cook PVI of D +9 and is represented by Democrat Lois Capps.