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area code

Biggest city:

Not Assigned



Not Assigned

Nearby area codes: 

Zip codes

Major Cities:

San Francisco, Oakland, Fremont, Hayward, Berkeley

Not Assigned

Average Income:


Unemployment Rate:

The 341 area code is a newer addition to California's telecommunications system, particularly serving the East Bay area. Introduction as an Overlay: The 341 area code was introduced as an overlay to the existing 510 area code. This implementation, effective on July 22, 2019, was designed to provide additional numbering resources due to the high demand for telephone numbers in the East Bay area of California. The overlay approach allowed existing 510 subscribers to retain their phone numbers, while new numbers could be assigned either the 510 or 341 area code. Geographical Coverage: The 341 area code, along with the 510 area code, covers the East Bay area of California, including major cities like Oakland, Berkeley, and Richmond, as well as many smaller communities. This region is a significant part of the San Francisco Bay Area, characterized by a mix of urban and suburban landscapes, and is known for its economic vitality, cultural diversity, and technological innovation. Adoption of Ten-Digit Dialing: With the introduction of the 341 overlay, ten-digit dialing (area code + phone number) became mandatory for all local calls within the 510 and 341 area codes. This requirement, aligning with the standard practice in regions with overlay area codes across the United States, was essential to accommodate the growing number of phone users and the increasing need for more telephone numbers in the densely populated region. These facts about the 341 area code highlight its crucial role in supporting the telecommunications needs of the East Bay area in California. By providing additional numbering capacity and facilitating the transition to ten-digit dialing, the 341 area code ensures that the region's communication infrastructure can keep pace with its growth and evolving needs.
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