Why Choose a 510 Area Code?
The 510 area code covers Alameda County and western Contra Costa County, including cities like Oakland, Berkeley, Alameda, Fremont, Richmond, and Hayward. It was introduced in 1991 to serve the East Bay's fast-growing population and remains a key identifier for businesses.
Due to number exhaustion, 341 was introduced as an overlay for 510. Today, both codes cover the same area and allow you to maintain a local presence in one of California's most dynamic metro regions.