Area codes in Santa Clara, California
Santa Clara, California uses 2 area codes — 408 and 669. The main Santa Clara area code is 408.
Area codes serving Santa Clara
Phone numbers in Santa Clara are written as ten digits — for example (408) 555-0190 — and fall in the Pacific Time zone.
How Santa Clara came to have 2 area codes
The original Santa Clara area code is 408, in service since 1959. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 669 (2012). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Santa Clara now uses all 2 codes and every local call is dialed with ten digits.
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- Sunnyvale 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
- Fresno area codes
- Long Beach area codes
- Oakland area codes
- Bakersfield area codes
Frequently asked questions
What is the area code for Santa Clara?
The main area code for Santa Clara, California is 408. Santa Clara is now served by 2 area codes in total: 408, 669.
How many area codes does Santa Clara have?
Santa Clara has 2 area codes: 408, 669.
Why does Santa Clara have more than one area code?
As Santa Clara used up the numbers available in its original area code (408, in service since 1959), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Santa Clara number?
Dial all 10 digits — the area code (408 or 669) 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.