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
Phone numbers in Costa Mesa are written as ten digits — for example (949) 555-0190 — and fall in the Pacific Time zone.
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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More cities in California
- Los Angeles area codes
- San Diego area codes
- San Francisco area codes
- Sacramento area codes
- San Jose area codes
- Fresno area codes
- Long Beach area codes
- Oakland area codes
Frequently asked questions
What is the area code for Costa Mesa?
The main area code for Costa Mesa, California is 949.
How many area codes does Costa Mesa have?
Costa Mesa has 1 area code: 949.
How do you dial a Costa Mesa number?
Dial all 10 digits — the area code (949) 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.