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All Area Codes/California
341

Oakland, California

Area code 341

State
California
Region
Pacific
Time zone
PT
Type
Geographic
--:--local time

Got a missed call from 341?

Our directory lists 341 for Oakland, California, but an area code alone cannot establish who is calling. Scammers can fake caller ID to match the first six digits of the number they are dialing, a trick called neighbor spoofing, so a familiar-looking code proves nothing about who is really calling.

If you were not expecting the call, let it go to voicemail. Verify the caller through a trusted contact method before returning the call, and never share personal details with an unverified caller.

Worth knowing: an area code no longer tells you where someone is. Mobile numbers keep their original code when people move, so a 341 number may belong to someone who left California years ago.

Frequently asked questions about 341

Where is area code 341?

Our directory lists area code 341 for Oakland, California. The listed city is a reference location, not a complete coverage map. A phone number's area code does not establish the caller's current location.

What time zone is area code 341 in?

This directory uses Pacific Time (PT) for California. This is state-level guidance; confirm the recipient's local time before calling.

Is area code 341 a scam?

An area code alone cannot tell you whether a call is genuine. Caller ID can be spoofed, including numbers that appear local. Let unexpected calls go to voicemail and verify the caller independently before sharing personal information.

Is area code 341 toll-free?

The directory lists 341 as a geographic area code, not a toll-free code. US toll-free codes include 800, 833, 844, 855, 866, 877, and 888. Your carrier and calling plan determine any charges.

37 listed area codes in California

209 Lodi213 Los Angeles279 Arden-Arcade310 Los Angeles323 Los Angeles369 Santa Rosa408 Gilroy415 San Francisco424 Beverly Hills442 Apple Valley510 Alameda530 Chico559 Clovis562 Bellflower619 Chula Vista626 Alhambra627 Santa Rosa628 San Francisco650 Daly City657 Anaheim661 Earlimart669 San Jose707 Benicia714 Anaheim747 Burbank760 Apple Valley805 Camarillo818 Agoura Hills820 Camarillo831 Salinas858 San Diego909 Anaheim916 Elk Grove925 Antioch949 Costa Mesa951 Corona

Nearby in the Pacific

206 Seattle253 Kent360 Bellingham425 Bellevue458 Eugene503 Beaver509 Kennewick541 Bend564 Seattle808 Honolulu

Where Is Area Code 341?

Area code 341 serves Oakland and the surrounding East Bay in California. It covers the same geographic territory as area code 510, including western Alameda County and western Contra Costa County along San Francisco Bay.

Major communities include Oakland, Berkeley, Fremont, Hayward, Richmond, and San Leandro. The area extends from southern Alameda County north into western Contra Costa County. Area code boundaries follow telephone-number assignments and do not always match city boundaries.

The region includes San Francisco Bay shoreline, Oakland’s urban waterfront, and the East Bay hills. Notable places include the Port of Oakland and the University of California, Berkeley.

Cities and Communities in the 341 Area Code

  • Alameda, Alameda County
  • Albany, Alameda County
  • Berkeley, Alameda County
  • El Cerrito, Contra Costa County
  • Emeryville, Alameda County
  • Fremont, Alameda County
  • Hayward, Alameda County
  • Hercules, Contra Costa County
  • Newark, Alameda County
  • Oakland, Alameda County
  • Piedmont, Alameda County
  • Pinole, Contra Costa County
  • Richmond, Contra Costa County
  • San Leandro, Alameda County
  • San Lorenzo, Alameda County
  • San Pablo, Contra Costa County
  • Union City, Alameda County

History of Area Code 341

Area code 341 entered service on July 22, 2019, as an overlay for area code 510. An overlay adds another area code to the same geographic territory, so the region has both 510 and 341 numbers without a new boundary dividing it.

Area code 510 began service on September 2, 1991, after splitting from area code 415. Area code 925 later split from 510 on March 14, 1998, serving eastern parts of Alameda and Contra Costa counties. The 341 overlay added numbering capacity while allowing existing 510 numbers to remain in place.

Key Facts About Area Code 341

  • Area code 341 serves Oakland, California, and nearby East Bay communities.
  • The area code is in the Pacific US Census region and uses Pacific Time.
  • Area code 341 is a geographic code and an overlay of area code 510.
  • The 341 and 510 codes cover the same geographic area in western Alameda and western Contra Costa counties.
  • Area code 341 entered service on July 22, 2019.
  • Area code 510 split from 415 in 1991, and area code 925 split from 510 in 1998.
  • Local calls in the 341 and 510 overlay area require 10-digit dialing.
  • The University of California, Berkeley, and the Port of Oakland are notable institutions in the area.