Pick 510 if the number should read as Oakland.
510 covers the western parts of Alameda and Contra Costa counties, the East Bay. Oakland, Berkeley, Alameda and Fremont are in it.
The area codes for Oakland are 510 and 341.
Area codes in Oakland
Get a phone number with the right area code for Oakland.
Oakland uses 510, split from 415 in 1991, and 341, laid over it in 2019. The East Bay from Richmond down to Fremont is in the same two codes.
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Pick 510 for the East Bay code Oakland has had since 1991, or 341 for a newer number.
Pick 341 if you want the newer code.
341 entered service on July 22, 2019, laid over the same area as 510.
Pick 925 if your customers are east of the hills.
925 took the part of the area east of the hills in 1998. Walnut Creek, Concord and Livermore use it.
People filed 118 FCC complaints about unwanted calls from Oakland area codes in 12 months.
From October 2025 to September 2026, 118 unwanted-call complaints filed with the FCC gave a caller ID number that started with 510 and 341. 510 was named most, on 88 of them (75%).
- 118unwanted-call complaints named a Oakland code
- 510was named on the most of them, 88
- 75%of the Oakland complaints named 510
Source: Federal Communications Commission, CGB - Consumer Complaints Data (dataset 3xyp-aqkj), issue "Unwanted Calls", read on November 4, 2026. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
This is how you get a Oakland number.
- 1
Start your free week.
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Type the code you picked.
Open Create a number, type the three digits and give the number a name.
- 3
Hand the number out.
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People ask these questions about Oakland area codes.
More in the full FAQ.
Not any more. Oakland was in 415 until 510 was split from it in September 1991.
Yes. Berkeley, Alameda and Oakland all use 510 and 341.
A local call in Oakland is dialed with 1 plus ten digits, whichever of its codes the number starts with. The area code is part of every number you give out.
From October 2025 to September 2026, people filed 118 FCC complaints about unwanted calls from numbers that start with a Oakland code: 510 (88) and 341 (30). A complaint is one person's report. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
Yes. You type the area code you want when you create a number, and you do not need to live in Oakland. Calls ring the phone you already have, and texts land in your ExpressNumber inbox.
No. Your numbers are receive-only: they take calls and texts, and they never make them. You answer calls on your own phone, and you cannot reply to a text from the inbox.
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Codes around Oakland
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Every fact on this page comes from public numbering records.
The codes, the places and the years are rows of the North American Numbering Plan Administrator's area code database, and the complaints are the FCC's own.
Put an Oakland code on a number you can burn.
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