Area codes in Hawthorne, California
Hawthorne, California uses 2 area codes — 310 and 424. The main Hawthorne area code is 310.
Area codes serving Hawthorne
Phone numbers in Hawthorne are written as ten digits — for example (310) 555-0190 — and fall in the Pacific Time zone.
How Hawthorne came to have 2 area codes
The original Hawthorne area code is 310, in service since 1991. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 424 (2006). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Hawthorne now uses all 2 codes and every local call is dialed with ten digits.
All California area codes · Is a Hawthorne call a scam?
Nearby cities
- Inglewood area codes
- Gardena area codes
- Redondo Beach area codes
- Torrance area codes
- Compton area codes
- Culver City area codes
- Los Angeles area codes
- Lynwood area codes
More cities in California
- 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
- Bakersfield area codes
Frequently asked questions
What is the area code for Hawthorne?
The main area code for Hawthorne, California is 310. Hawthorne is now served by 2 area codes in total: 310, 424.
How many area codes does Hawthorne have?
Hawthorne has 2 area codes: 310, 424.
Why does Hawthorne have more than one area code?
As Hawthorne used up the numbers available in its original area code (310, in service since 1991), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Hawthorne number?
Dial all 10 digits — the area code (310 or 424) 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.