Watch Area Code
Lookup Code
North American Area CodePacific Time Zone

Area Code 341 Location & Details

State / Region: California • Country: United States

Major Cities Covered: Oakland, Fremont, Hayward, Berkeley, Richmond, San Leandro, Milpitas, Alameda, Union City, Newark

Standard Dial Format
+1 (341) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 341?
CaliforniaState Hub →
Country Territory
United States
341 Area Code Time Zone
Pacific
341 Overlay Codes
510

Area Code 341 Geographic Map

Interactive location bounds and coverage area for California (Pacific Timezone)

Lat: 37.77° • Lng: -122.20°
📍 Geographic Center: CaliforniaMap data © OpenStreetMap contributors

Where is Area Code 341 Located?

Telephone area code 341 is assigned to California in United States. It serves cities and metropolitan communities including Oakland, Fremont, Hayward, Berkeley, Richmond, San Leandro, Milpitas, Alameda, Union City, Newark.

Historical Context & Area Code Overlay Information:341 serves California (United States).

For local and long-distance calls within area code 341, standard 10-digit dialing (341) XXX-XXXX applies.

Who Called Me from Area Code 341?

Received an unknown call, missed call, or text scam from area code 341? Here is how to trace who is calling from 341 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 341 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 341:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 341 & Dialing Format

When placing a phone call to a number in area code 341, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (341) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 341 + 7-digit number.
  • Do I need to dial area code 341 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 341

Urban centers, census places, and communities within the +1-341 calling area

17 Major Cities Listed
City NameCountyPopulation% of 341 Pop
OaklandContra Costa County440,83828.2%
FremontAlameda County226,44214.5%
HaywardAlameda County157,11310.1%
BerkeleyContra Costa County121,9117.8%
RichmondMarin County114,8617.4%
San LeandroAlameda County85,3535.5%
MilpitasAlameda County78,5965.0%
AlamedaSan Mateo County76,8764.9%
Union CityAlameda County65,2824.2%
NewarkAlameda County47,8953.1%
San PabloContra Costa County31,6782.0%
HerculesContra Costa County26,3261.7%
El CerritoContra Costa County26,1211.7%
AlbanyContra Costa County19,1951.2%
PinoleContra Costa County18,5431.2%
EmeryvilleContra Costa County13,2510.8%
PiedmontContra Costa County10,6420.7%

Counties Covered by Area Code 341

Geographic county distribution and population coverage across California

County NameTotal Population% of 341 Area% of County
Contra Costa County1,169,53445.4%61%
Alameda County1,636,62442.3%40%
Marin County255,7047.4%45%
San Mateo County740,6274.9%10%

☎️Area Code 341 Exchange Prefixes & Carriers

Showing 50 of 125 central office 3-digit prefixes and assigned telecom carriers

52% Landline22% Wireless26% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(341) 200-📞LandlineHRCUL-RODEFRACTEL, LLC07/02/2020
(341) 201-📞LandlineFRNK OLIVRTELNYX LLC12/17/2020
(341) 202-📞LandlineOKLD MN-PDTELEPORT COMMUNICATIONS AMERICA, LLC - CA07/07/2021
(341) 203-📱WirelessRICHMONDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA07/29/2021
(341) 204-💻VoIPFRNK GRNLFBANDWIDTH.COM CLEC, LLC - CA10/28/2021
(341) 205-💻VoIPOKLD MN-PDBANDWIDTH.COM CLEC, LLC - CA08/31/2021
(341) 206-📱WirelessFRNK MAINCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA10/15/2021
(341) 207-💻VoIPRICHMONDBANDWIDTH.COM CLEC, LLC - CA10/26/2021
(341) 208-📱WirelessHAYWARDNEW CINGULAR WIRELESS PCS, LLC10/26/2021
(341) 209-💻VoIPFRNK OLIVRBANDWIDTH.COM CLEC, LLC - CA01/10/2022
(341) 210-💻VoIPOKLD ALMDBANDWIDTH.COM CLEC, LLC - CA09/27/2021
(341) 211-📞LandlineCAMULTIPLE OCN LISTINGN/A
(341) 212-📞LandlineOKLD BKLYTELNYX LLC11/21/2021
(341) 213-📱WirelessOKLD MN-PDT-MOBILE USA, INC.01/10/2022
(341) 214-📱WirelessHRCUL-RODENEW CINGULAR WIRELESS PCS, LLC04/12/2022
(341) 215-💻VoIPRICHMONDBANDWIDTH.COM CLEC, LLC - CA02/04/2022
(341) 216-💻VoIPFRNK MAINBANDWIDTH.COM CLEC, LLC - CA02/22/2022
(341) 217-💻VoIPOKLD ALMDBANDWIDTH.COM CLEC, LLC - CA09/02/2022
(341) 218-📞LandlineOKLD FRTVLCOMCAST PHONE OF CALIFORNIA, LLC10/10/2022
(341) 219-📞LandlineOKLD BKLYU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS06/03/2022
(341) 220-📞LandlineOKLD MN-PDTELEPORT COMMUNICATIONS AMERICA, LLC - CA09/19/2022
(341) 221-📱WirelessHAYWARDT-MOBILE USA, INC.02/28/2022
(341) 222-📞LandlineOKLD FRTVLFRACTEL, LLC12/03/2019
(341) 223-📞LandlineOKLD ALMDCOMMIO, LLC11/03/2022
(341) 224-📱WirelessFRNK MAINNEW CINGULAR WIRELESS PCS, LLC12/12/2022
(341) 225-📱WirelessFRNK GRNLFNEW CINGULAR WIRELESS PCS, LLC02/16/2023
(341) 226-📞LandlineOKLD FRTVLFRACTEL, LLC05/28/2020
(341) 227-📱WirelessFRNK OLIVRNEW CINGULAR WIRELESS PCS, LLC02/16/2023
(341) 228-📱WirelessFRNK MAINCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA02/17/2023
(341) 229-💻VoIPOKLD MN-PDONVOY, LLC - CA03/30/2023
(341) 230-💻VoIPRICHMONDONVOY, LLC - CA04/12/2023
(341) 231-📱WirelessELSBR-PINLT-MOBILE USA, INC.05/08/2023
(341) 232-💻VoIPHAYWARDONVOY, LLC - CA05/12/2023
(341) 233-📱WirelessFRNK MAINNEW CINGULAR WIRELESS PCS, LLC06/13/2023
(341) 234-📞LandlineOKLD ALMDFRACTEL, LLC01/13/2021
(341) 235-📱WirelessFRNK GRNLFNEW CINGULAR WIRELESS PCS, LLC08/04/2023
(341) 236-📱WirelessFRNK OLIVRNEW CINGULAR WIRELESS PCS, LLC08/04/2023
(341) 237-💻VoIPOKLD BKLYONVOY, LLC - CA08/17/2023
(341) 238-💻VoIPOKLD FRTVLONVOY, LLC - CA08/17/2023
(341) 239-💻VoIPOKLD ALMDONVOY, LLC - CA09/19/2023
(341) 240-📱WirelessHAYWARDT-MOBILE USA, INC.11/01/2023
(341) 241-💻VoIPHAYWARDONVOY, LLC - CA07/13/2022
(341) 242-📱WirelessRICHMONDT-MOBILE USA, INC.11/08/2023
(341) 243-📞LandlineHRCUL-RODECOMMIO, LLC12/21/2023
(341) 244-📱WirelessOKLD TRNIDT-MOBILE USA, INC.01/23/2024
(341) 245-💻VoIPHAYWARDONVOY, LLC - CA01/24/2024
(341) 246-💻VoIPFRNK OLIVRONVOY, LLC - CA02/07/2024
(341) 247-💻VoIPRICHMONDONVOY, LLC - CA02/07/2024
(341) 248-💻VoIPFRNK GRNLFONVOY, LLC - CA02/07/2024
(341) 249-📱WirelessFRNK GRNLFNEW CINGULAR WIRELESS PCS, LLC02/20/2024

Frequently Asked Questions about Area Code 341

Where is area code 341 located?

Area code 341 is located in California (United States), serving cities like Oakland, Fremont, Hayward, Berkeley, Richmond, San Leandro, Milpitas, Alameda, Union City, Newark.

What timezone is area code 341?

Area code 341 operates in the Pacific timezone.

What state is area code 341?

Area code 341 is assigned to the state / telecom territory of California.

Is area code 341 a scam or dangerous?

Area code 341 is an official geographic area code for California. However, beware of robocaller spoofing.

California State Area Codes

View complete directory of telephone area codes assigned to California.

Explore California Directory

Get a 341 Business Phone Number

How to acquire a virtual phone number or business line with area code 341 for local customer trust in California.

Get 341 Business Number
🛡️ Scam & Safety Directory

Check high-risk international callback scam area codes and robocall warning databases.

Scam Area Codes 2026

Overlay & Nearby Area Codes for California

Explore neighboring telecom prefixes sharing geographical boundaries with area code 341.

510
Pacific
Area Code 510
Oakland, Fremont, Hayward, Berkeley, Richmond, San Leandro, Milpitas, Alameda, Union City, Newark
209
Pacific
Area Code 209
Stockton, Modesto, Tracy, Merced, Manteca, Turlock, Lodi, Los Banos, Ceres, Lathrop
213
Pacific
Area Code 213
Los Angeles, Montebello, Commerce, Vernon
279
Pacific
Area Code 279
Sacramento, Elk Grove, Roseville, Folsom, Rancho Cordova, Citrus Heights, Rocklin, Lincoln, West Sacramento, Loomis
310
Pacific
Area Code 310
Torrance, Inglewood, Carson, Compton, Santa Monica, South Gate, Hawthorne, Redondo Beach, Lynwood, Gardena
323
Pacific
Area Code 323
Los Angeles, South Gate, Montebello, Huntington Park, Bell Gardens, Commerce, Vernon