Area Code 925 at a Glance
| Area code | 925 |
| Region | California |
| Country | United States |
| Primary timezone | America/Los_Angeles |
| Dialing format | +1 (925) NXX-XXXX |
Cities and Places Using Area Code 925
Based on prefix-level carrier data, area code 925 covers places including:
- Walnut Creek, CA
- Pleasanton, CA
- Concord, CA
- Livermore, CA
- Antioch, CA
- San Ramon, CA
- Dublin, CA
- Martinez, CA
- Danville, CA
- Brentwood, CA
- Pittsburg, CA
- Lafayette, CA
Frequently Asked Questions
Where is area code 925?
Area code 925 serves California, United States.
Who is calling me from area code 925?
A call from area code 925 most likely originates from California, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.
How do I dial a 925 number?
Within North America: dial 1-925 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 925 and the number.