Area codes in Gilroy, California

Gilroy, California uses 2 area codes — 408 and 669. The main Gilroy area code is 408.

Area codes serving Gilroy

Phone numbers in Gilroy are written as ten digits — for example (408) 555-0190 — and fall in the Pacific Time zone.

How Gilroy came to have 2 area codes

The original Gilroy 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 Gilroy now uses all 2 codes and every local call is dialed with ten digits.

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Frequently asked questions

What is the area code for Gilroy?

The main area code for Gilroy, California is 408. Gilroy is now served by 2 area codes in total: 408, 669.

How many area codes does Gilroy have?

Gilroy has 2 area codes: 408, 669.

Why does Gilroy have more than one area code?

As Gilroy 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 Gilroy 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.