Area code 510

Area code 510 is a telephone area code in California, covering Alameda, Berkeley, Castro Valley, and El Cerrito and 8 more. It serves 13 cities and towns. The area observes Pacific time.

State
California
Local time
Pacific time
Places served
13

Cities and towns in the 510 area code

Area code 510 serves 13 listed places across California. These are the largest:

Getting a 510 business phone number

A local 510 number tells customers in California that you are nearby, and local numbers get answered more often than unfamiliar ones. OrderToAI provisions a 510 number for your business and its AI answers every call on it, around the clock, in your own voice and hours. You can also keep the number you already have and forward it instead.

  • A dedicated 510 number, included in your plan
  • Answered 24/7, with no after-hours surcharge
  • Books appointments, takes messages, and texts links your callers ask for
  • Transfers to you or your team whenever the caller asks for a person
Get a 510 number

See pricing for what a plan costs.

Questions about the 510 area code

Where is area code 510?
Area code 510 is located in California. It covers Alameda, Berkeley, Castro Valley, El Cerrito, and Fremont and 7 more, and serves 13 cities and towns in total.
What cities use the 510 area code?
Cities in the 510 area code include Alameda, Berkeley, Castro Valley, El Cerrito, Fremont, and Hayward and 6 more. The largest of these is Alameda.
What time zone is area code 510 in?
Area code 510 is in Pacific time, the same zone as the rest of California. If you are calling 510 from another zone, check the local hour there before you dial.
Is a call from area code 510 a scam?
Not by itself. Area code 510 is a normal geographic code assigned to California, so most calls from it are ordinary local calls. Caller ID can be spoofed on any area code, so judge a call by what the caller asks for rather than by the number it came from.
How do I get a 510 phone number for my business?
OrderToAI can provision a 510 business number for you during signup, and its AI answers every call to it 24/7. You can also keep your existing number and forward it, so customers keep dialing the number they already know.
Do I need to be located in California to use a 510 number?
No. A 510 number can be used from anywhere, which is why businesses serving California often choose one even when their staff are elsewhere. Customers see a local number and are more likely to pick up.

Looking for a different code? See all area codes.