Area codes in San Bernardino, California

San Bernardino, California uses 2 area codes — 909 and 840. The main San Bernardino area code is 909.

Area codes serving San Bernardino

Phone numbers in San Bernardino are written as ten digits — for example (909) 555-0190 — and fall in the Pacific Time zone.

How San Bernardino came to have 2 area codes

The original San Bernardino area code is 909, in service since 1992. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 840 (2021). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why San Bernardino now uses all 2 codes and every local call is dialed with ten digits.

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Nearby cities

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Frequently asked questions

What is the area code for San Bernardino?

The main area code for San Bernardino, California is 909. San Bernardino is now served by 2 area codes in total: 909, 840.

How many area codes does San Bernardino have?

San Bernardino has 2 area codes: 909, 840.

Why does San Bernardino have more than one area code?

As San Bernardino used up the numbers available in its original area code (909, in service since 1992), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

How do you dial a San Bernardino number?

Dial all 10 digits — the area code (909 or 840) 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.