Area codes in Brentwood, California

Brentwood, California uses area code 925. The main Brentwood area code is 925.

Area codes serving Brentwood

Phone numbers in Brentwood are written as ten digits — for example (925) 555-0190 — and fall in the Pacific Time zone.

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Nearby cities

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Frequently asked questions

What is the area code for Brentwood?

The main area code for Brentwood, California is 925.

How many area codes does Brentwood have?

Brentwood has 1 area code: 925.

How do you dial a Brentwood 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.