Area codes in Brentwood, California
Brentwood, California uses area code 925. The main Brentwood area code is 925.
Area codes serving Brentwood
All California area codes · Is a Brentwood call a scam?
Nearby cities
- Antioch area codes
- Pittsburg area codes
- Danville area codes
- Livermore area codes
- Concord area codes
- San Ramon area codes
- Dublin area codes
- Pleasanton area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.