Area codes in Compton, California
Compton, California uses 2 area codes — 310 and 424. The main Compton area code is 310.
Area codes serving Compton
Phone numbers in Compton are written as ten digits — for example (310) 555-0190 — and fall in the Pacific Time zone.
How Compton came to have 2 area codes
The original Compton 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 Compton now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
- Lynwood area codes
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- Downey area codes
- Inglewood area codes
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More cities in California
- San Diego area codes
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Frequently asked questions
What is the area code for Compton?
The main area code for Compton, California is 310. Compton is now served by 2 area codes in total: 310, 424.
How many area codes does Compton have?
Compton has 2 area codes: 310, 424.
Why does Compton have more than one area code?
As Compton 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 Compton 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.