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