Area codes in Costa Mesa, California
Costa Mesa, California uses area code 949. The main Costa Mesa area code is 949.
Area codes serving Costa Mesa
All California area codes · Is a Costa Mesa call a scam?
Nearby cities
- Newport Beach area codes
- Santa Ana area codes
- Huntington Beach area codes
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- Irvine area codes
- Anaheim area codes
- Laguna Beach area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.