Area Code Lookup
What Area Code Is Walnut Creek?
Area code 925 · California
Walnut Creek uses area code 925. It is located in California.
Area Code Serving Walnut Creek
Frequently Asked Questions
What area code is Walnut Creek?
Walnut Creek uses area code 925. It is located in California.
How do I call Walnut Creek from outside the US?
To call Walnut Creek from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-925-XXX-XXXX). The +1 is the country code for all NANPA countries.