Area Code 341
California
Area code 341 serves California, primarily Oakland, in the Pacific Time (PT) time zone. It is an overlay area code sharing territory with area code 510.
Overlay Area Code
This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.
This area code shares its geographic region with: area code 510 (Oakland).
In service since: 22-Jul-2019
Geographic Coverage
Area code 341 serves California, primarily the Oakland area, in the Pacific Time (PT). It covers 34 communities. The geographic center of this area code is approximately 37.84°N, 122.20°W.
History
Area code 341 serves as an overlay for the same territory as area code 510. It was introduced in 2019 to provide additional phone number capacity for the region. It shares its territory with area code area code 510.
Demographics
The estimated population served by area code 341 is approximately 1,809,235. The population density is 2,152 people per square mile, which is higher than the national average of 94. The median household income is $126,240, which is higher than the national median of $78,538. Approximately 50.6% of adults hold a bachelor's degree or higher, compared to the national rate of 35.0%. This rate is higher than the national average. The poverty rate stands at 9.1%, which is lower than the national rate of 12.4%.
Demographics & Economics
- Total Population
- 1,809,235
- Population Density
- 2,152 people/sq miabove U.S. average (U.S.: 94 people/sq mi)
- Median Household Income
- $126,240above U.S. median (U.S.: $78,538)
- Poverty Rate
- 9.1%below U.S. average (U.S.: 12.4%)
- Unemployment Rate
- 5.3%near U.S. average (U.S.: 5.2%)
- Education Attainment
- Bachelor's Degree+50.6%above U.S. average (U.S.: 35.0%)High School or Lower22.3%
Statistics are population-weighted aggregations from Census ACS 5-year estimates.See Sources for details.
Geographic Coverage
State
CA
Major Cities
- Oakland
- Fremont
- Hayward
- Berkeley
- Richmond
- San Leandro
- Alameda
- Castro Valley
- Newark
- San Pablo
- San Lorenzo
- Hercules
- El Cerrito
- Ashland
- Albany
- Pinole
- Cherryland
- Emeryville
- Piedmont
- Fairview
- Rodeo
- Kensington
- Tara Hills
- North Richmond
and 10 more cities
Time Zone
- Pacific Time (PT)
Current Time
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 341).
| County | Population | Share |
|---|---|---|
| Alameda, CA | 1,406,448 | 77.7% |
| Contra Costa, CA | 339,270 | 18.8% |
| San Francisco, CA | 63,517 | 3.5% |
Call Context
This area code serves the same metropolitan region as area code 510, including Oakland, in California. It was introduced as an overlay of area code 510, meaning both codes serve the same geographic territory.
Nearby Area Codes
Area codes geographically closest to 341.
Other Area Codes in California
Area codes that also serve California, linked for easy comparison.
Frequently Asked Questions
Common questions about area code 341 and how phone numbering works.
Phone numbers are assigned based on where the number was originally provisioned, not the caller's current location. Mobile phones retain their number when users move, and businesses may use numbers from regions where they don't have a physical presence. VoIP services can also provision numbers from virtually any area code.
Yes, mobile phones can have numbers from any area code in the region they were activated. Wireless carriers assign numbers from available pools regardless of phone type. When users change carriers or move to new areas, they typically keep their original number, which may have a different area code than their current location.
Start by looking up the area code on this site to understand its general geographic region. For the specific number, options include using your carrier's caller ID features or checking public directories. If you suspect fraud, you can report it to the FTC. To file a complaint about robocalls or spoofed numbers, visit the FCC Consumer Complaint Center. You can also register your number with the National Do Not Call Registry to reduce unwanted calls. Keep in mind that caller ID can display any name the caller chooses to set.
When an area's pool of available phone numbers runs low, regulators may introduce an "overlay" area code that covers the same geographic territory as the original. Both codes coexist, and new numbers are assigned from whichever code has availability. This area code shares its region with area code 510, area code 510. Learn more in our overlay vs split guide.
While Oakland is a prominent city in this area code's coverage, the code serves the broader surrounding region as well. Area codes are assigned geographically and typically cover multiple cities, towns, and communities beyond any single anchor city.
This area code covers a metropolitan region with high population density. Dense urban areas typically have higher call volumes and may have multiple overlapping area codes to meet demand for phone numbers. Businesses and residents in these areas are more likely to need additional numbering resources.