(510) Area Code Business Phone Numbers

The 510 covers Oakland and most of the East Bay, and it has been the calling card of this side of the water since 1991. Grab a local number and your customers know you are part of the neighborhood, not some faceless call center.

Get a 510 Number

About the 510 Area Code

Area Code510
Established1991
Primary CityOakland, CA
TimezonePacific

The 510 was carved out of the old 415 back in 1991, when the East Bay had grown large enough to need its own identity on the dial. Since then it has become shorthand for Oakland and the towns around it, from Berkeley up to Richmond and down through Fremont. Locals wear the 510 like a badge, and a phone number that starts with those three digits still carries weight.

Oakland runs on a mix of shipping, tech, food, and a stubborn independent streak. The Port of Oakland alone supports about 98,000 regional jobs and roughly $174 billion in yearly economic activity [1], and small shops from Fruitvale to Rockridge feed off that trade. The city's recovery has been uneven since the pandemic, with downtown foot traffic still lagging while neighborhood commercial strips have held steadier [2].

People here answer calls from familiar area codes and let the rest ring through to voicemail. A 510 number tells someone in Alameda or Hayward that you are close by and reachable, which matters when they are deciding between you and a competitor across the bridge. Tonet makes it easy to pick a 510 line whether your office is on Broadway or you are running the business from a laptop in Sacramento.

Cities Served by the 510 Area Code

The 510 stretches across most of Alameda County and the western edge of Contra Costa, covering thirteen main cities along with the smaller communities in between. If your customers live or work in the East Bay, this is the code they know.

Alameda, CA Berkeley, CA Castro Valley, CA El Cerrito, CA Fremont, CA Hayward, CA Newark, CA Oakland, CA Richmond, CA San Leandro, CA San Lorenzo, CA San Pablo, CA Union City, CA

Features Built for East Bay Businesses

The Port never really sleeps and neither do a lot of the small operators who feed off it. Tonet gives you the tools to keep up without adding hardware or headaches.

Auto Attendant

Route incoming calls to sales, service, or the warehouse without paying a receptionist to sit at a desk. Set custom greetings for daytime, after hours, and holidays.

Call Recording

Keep a record of quotes, orders, and service calls so nothing gets lost in translation. Useful when a customer swears they asked for something different last Tuesday.

AI Transcription

Voicemails and recorded calls come back as readable text you can scan in seconds. Skim ten messages in the time it used to take to listen to one.

Business SMS

Send appointment reminders and quick updates from your 510 number so replies land in the same thread. Bay Area customers text more than they call.

Mobile App

Take calls from your business line on your cell while you are on a job site in Fremont or grabbing lunch in Temescal. Nothing hits your personal number.

Daily Billing

Pay by the day instead of locking into a yearly plan. Start at $10 per user per month and add extra numbers for $2.50 each. No contracts.

Frequently Asked Questions

Can I get a 510 number if my business is not physically in Oakland?

Yes. Tonet is a cloud service so your address does not have to match the area code. Plenty of contractors and consultants pick a 510 line because they serve East Bay clients even if their office sits somewhere else.

How long does it take to activate a new 510 number?

Usually minutes. You sign up, pick your number, and start taking calls the same afternoon. Porting an existing 510 number over from another provider takes longer, typically a week or two.

Will my 510 number work on my existing phone?

Yes. Use the Tonet mobile app on your iPhone or Android, a laptop, or a desk phone if you prefer that. No new hardware required to get started.

What does a 510 business line cost?

Plans start at $10 per user per month billed daily, and extra numbers are $2.50 per month each. There are no annual contracts, so you can add seats when a new hire starts and drop them when they leave.

Are there other area codes serving the East Bay?

The 510 is still the main one, though the 341 overlay was introduced to cover the same region as numbers ran short. If you want that classic East Bay feel, ask for a 510 when you sign up.

Sound like you are right around the corner

Pick a 510 number in a few minutes and start taking East Bay calls today.

Get Started