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
Phone numbers in Walnut Creek are written as ten digits — for example (925) 555-0190 — and fall in the Pacific Time zone.
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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
More cities in California
- Los Angeles area codes
- San Diego area codes
- San Francisco area codes
- Sacramento area codes
- San Jose area codes
- Fresno area codes
- Long Beach area codes
- Bakersfield area codes
Frequently asked questions
What is the area code for Walnut Creek?
The main area code for Walnut Creek, California is 925.
How many area codes does Walnut Creek have?
Walnut Creek has 1 area code: 925.
How do you dial a Walnut Creek number?
Dial all 10 digits — the area code (925) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.