Areacode 310 is a telephone areacode which is roughly coterminous with West Los Angeles and the South Bay area of Los Angeles County.
Along with 212 (Manhattan), 213 (downtown Los Angeles), 404 (Atlanta), and 909 (the Inland Empire area in Los Angeles' eastern suburbs), 310 is one of the best-known areacodes due to its frequent citation in popular culture.
It was split from areacode 714 in 1990, and originally encompassed eastern San Bernardino County and all of Riverside County.