Area codes in Antioch, California

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

Area codes serving Antioch

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

All California area codes · Is a Antioch call a scam?

Nearby cities

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Frequently asked questions

What is the area code for Antioch?

The main area code for Antioch, California is 925.

How many area codes does Antioch have?

Antioch has 1 area code: 925.

How do you dial a Antioch 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.