Area codes in Lompoc, California
Lompoc, California uses 2 area codes — 805 and 820. The main Lompoc area code is 805.
Area codes serving Lompoc
Phone numbers in Lompoc are written as ten digits — for example (805) 555-0190 — and fall in the Pacific Time zone.
How Lompoc came to have 2 area codes
The original Lompoc area code is 805, in service since 1957. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 820 (2018). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Lompoc now uses all 2 codes and every local call is dialed with ten digits.
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More cities in California
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- 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 Lompoc?
The main area code for Lompoc, California is 805. Lompoc is now served by 2 area codes in total: 805, 820.
How many area codes does Lompoc have?
Lompoc has 2 area codes: 805, 820.
Why does Lompoc have more than one area code?
As Lompoc used up the numbers available in its original area code (805, in service since 1957), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Lompoc number?
Dial all 10 digits — the area code (805 or 820) 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.