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