Local Phone Numbers
California
510 Area Code
510 Area Code
Port Your Number or Get an Oakland Overlay Code with DialLink
Establish a Local Presence in Oakland and the East Bay
No Office Needed
Want to connect with customers in Oakland, Fremont, or Berkeley? The 510 area code is one of the most recognized in Northern California, known for its strong local identity and connection to the greater San Francisco Bay Area. However, due to demand, new 510 numbers are no longer being issued. If you already have a 510 number, you can easily port it to DialLink. If not, overlay code 341 is available now and serves the same region.
With DialLink, startups and SMBs can activate a local East Bay number and manage their entire phone system from one AI-powered platform built to help you scale communications with ease.
Why Choose a 510 Area Code?
The 510 area code covers Alameda County and western Contra Costa County, including cities like Oakland, Berkeley, Alameda, Fremont, Richmond, and Hayward. It was introduced in 1991 to serve the East Bay's fast-growing population and remains a key identifier for businesses.
Due to number exhaustion, 341 was introduced as an overlay for 510. Today, both codes cover the same area and allow you to maintain a local presence in one of California's most dynamic metro regions.
Get More Than a Local Number
When you choose a local number from DialLink, you're getting more than just digits:
AI Voice Agents
Automate routine calls, appointment booking, and more
AI call tagging & summaries
Get insights into calls and improve follow-ups
Advanced call handling
Customize call flows, routing, and voicemail rules
Work from anywhere
Answer calls on mobile, desktop, web app, or desk phones
Plug-and-play setup
Get started in minutes with no IT experts required
AI-powered business messaging
Get AI-generated suggestions and send replies instantly
Whether you're based in California or simply want to break into the market, DialLink's numbers help your business sound local, feel accessible, and stay organized.
Who Can Benefit from a Local Phone Number
Startups entering Oakland, Berkeley, or the East Bay
Remote teams serving California-based clients
Tech, education, and healthcare companies expanding into the Bay Area
Consultants and service providers needing local recognition
Expand Beyond Area Code 510
From the East Bay to anywhere in the world. DialLink supports local and international numbers in over 100 countries, so you can expand confidently, with a single cloud-powered solution.
Frequently Asked Questions
Where is area code 510?
Area code 510 is located in California, serving the East Bay region of the San Francisco Bay Area, including Oakland, Berkeley, and Fremont.
What cities use the 510 area code?
Cities in the 510 area code include Oakland, Berkeley, Alameda, Fremont, Hayward, Richmond, and surrounding areas in Alameda and Contra Costa counties.
Where in the U.S. is area code 510?
Area code 510 is in Northern California, in the San Francisco Bay Area's East Bay region.
What is the overlay for the 510 area code?
The 341 area code is the official overlay for 510. Both area codes serve the same geographic region in the East Bay.
What is an overlay area code?
An overlay area code is a second code introduced to the same region as an existing one. It allows new phone numbers to be assigned without changing anyone's existing number.
Ready to Build Your Presence in California?
Start today with DialLink's AI-powered cloud phone system and secure your local number. Project professionalism, build trust, and scale your customer communications with ease.
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