341 Area CodeOakland, CA
Area code 341 covers Oakland and nearby communities in California, in the Pacific Time (PT) zone, home to about 1.7 million people across 33 cities. It overlays 408, 510 and 669, so the region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Oakland
- State
- California (CA)
- Timezone
- Pacific Time (PT)
- Current Time
- Overlay
- Yes – shares area with 408, 510, 669
Overview of the 341 Area Code
What is the 341 area code?
The 341 area code serves Oakland, California, alongside other established area codes. When you see a 341 number, it indicates a local number within this geographic area.
Why was area code 341 created?
The 341 area code was introduced as an overlay to add numbers in Oakland once the existing area codes 408, 510, and 669 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 341 Area Code
The 341 area code serves Oakland and surrounding areas in California. It operates within the Pacific Time (PT) time zone. It complements the coverage of area codes 408, 510, and 669. This area code covers several key cities, including:
- Oakland
- Fremont
- Hayward
- Berkeley
- Richmond
- San Leandro
Got a call from a 341 number? It came from Oakland, CA. Since 341 overlays with 408, 510, and 669, every local call in the region needs all ten digits to land on the right line. Inside 341, Oakland holds about 26% of the population; the rest is split across 32 smaller cities.
Oakland Area Codes Overview
Oakland is served by multiple area codes, reflecting its telecommunications needs. The 341 area code operates alongside 408, 510, 669. Here are the area codes serving this region:
The introduction of the 341 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 341 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Oakland | CA | 443,554 | 15% | 100% |
| Fremont | CA | 228,192 | 16% | 99% |
| Hayward | CA | 158,440 | 12% | 97% |
| Berkeley | CA | 121,749 | 3% | 100% |
| Richmond | CA | 115,353 | 10% | 100% |
| San Leandro | CA | 86,571 | 3% | 100% |
| Alameda | CA | 78,795 | 4% | 100% |
| Union City | CA | 66,196 | 4% | 100% |
| Castro Valley | CA | 61,388 | 3% | 100% |
| Newark | CA | 46,254 | 3% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 341 been reported for unwanted calls?
Yes – 106 unwanted-call complaints were reported to the FTC for numbers showing a 341 area code (May 29 – Jul 2, 2026).
- 58% robocalls
- ↓ 14% vs prior period
Most-reported subjects
- Other49%52
- Reducing your debt (credit cards, mortgage, student loans)16%17
- Dropped call or no message14%15
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Which prefixes and exchanges belong to area code 341?
7% assigned to a telco
- 86% Landline
- 14% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (341)200- | Landline | Fractel |
| (341)201- | Landline | Telnyx |
| (341)202- | Landline | Teleport Communications America |
| (341)203- | Wireless | Verizon Wireless |
| (341)204- | Landline | Bandwidth.Com Clec |
| (341)205- | Landline | Bandwidth.Com Clec |
| (341)206- | Wireless | Verizon Wireless |
| (341)207- | Landline | Bandwidth.Com Clec |
| (341)208- | Wireless | New Cingular Wireless Pcs |
| (341)209- | Landline | Bandwidth.Com Clec |
Frequently Asked Questions about the 341 Area Code
Who called me from a 341 number?
A 341 number is assigned to Oakland, California, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 341 code to look nearby, so a 341 number doesn't prove the caller is local. Recently, 106 unwanted-call complaints were reported to the FTC for numbers showing the 341 code (58% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 341 a scam area code?
No area code is a scam on its own. 341 is a normal, officially assigned code for Oakland, California. Spam callers spoof local codes to raise the odds you answer, so 341 on your caller ID says nothing about who is really calling. Recently, 106 unwanted-call complaints were reported to the FTC for numbers showing the 341 code (58% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 341 area code?
Repeated calls from different 341 numbers are usually spoofing: a robocaller rotates through 341 numbers so each call looks local and slips past simple blocks. Recently, 106 unwanted-call complaints were reported to the FTC for numbers showing the 341 code (58% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 341 number?
If you aren't expecting a 341 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 341 area code?
Block a single 341 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 341 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 341?
Area code 341 covers Oakland and the surrounding area in California, spanning 33 cities with about 1,674,244 residents. It shares its area with overlay codes 408, 510, 669.
Is 341 a real area code?
Yes. 341 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Oakland, California. A real code can still show up on spoofed spam calls, so treat unknown 341 calls with normal caution.
What timezone is the 341 area code in?
The 341 area code is in the Pacific Time (PT). Because a number can be kept when someone moves or switches to VoIP, a specific 341 caller may not be in that zone.
How do I call a 341 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 341 and the seven-digit number. From a mobile phone you can usually just enter +1 341 followed by the number and let the phone add the exit code for you.