Area codes in Riverside, California

Riverside, California uses area code 951. The main Riverside area code is 951.

Area codes serving Riverside

Phone numbers in Riverside are written as ten digits — for example (951) 555-0190 — and fall in the Pacific Time zone.

All California area codes · Is a Riverside call a scam?

Nearby cities

More cities in California

Frequently asked questions

What is the area code for Riverside?

The main area code for Riverside, California is 951.

How many area codes does Riverside have?

Riverside has 1 area code: 951.

How do you dial a Riverside number?

Dial all 10 digits — the area code (951) 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.