Oceano ( /oʊʃiɑːnoʊ/ or /oʊsiɑːnoʊ/; Spanish pronunciation: [o'seano]) is a census-designated place (CDP) in San Luis Obispo County, California, United States. The population was 7,286 at the 2010 census, up from 7,260 at the 2000 census.
Oceano is located at 35°6′10″N 120°36′41″W / 35.10278°N 120.61139°W / 35.10278; -120.61139 (35.102680, -120.611471).
Oceano is part of the 5 Cities Metropolitan Area. According to the United States Census Bureau, the CDP has a total area of 1.5 square miles (4.0 km²), of which, 1.5 square miles (4.0 km²) of it is land and 0.02 square miles (0.04 km²) of it (0.98%) is water.