Area codes in Hollister, California
Hollister, California uses area code 831. The main Hollister area code is 831.
Area codes serving Hollister
Phone numbers in Hollister are written as ten digits — for example (831) 555-0190 — and fall in the Pacific Time zone.
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Nearby cities
- Gilroy area codes
- Salinas 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 Hollister?
The main area code for Hollister, California is 831.
How many area codes does Hollister have?
Hollister has 1 area code: 831.
How do you dial a Hollister number?
Dial all 10 digits — the area code (831) 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.