|Major City||Los Angeles|
|Time Zone||Pacific (UTC-08:00)|
310 is the area code for the west Los Angeles and South Bay areas of Los Angeles County in California. 310 also includes Catalina Island and a small part of Ventura County. 310 overlays the 424 area code, requiring 10-digit dialing. Portions of the 310 area code also overlay 562, 323, and 818.