California · Pacific Time
951 Area Code
Area code 951 is in California, serving western Riverside County including Riverside, Moreno Valley, Corona and Temecula. It is in the Pacific Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 951 area code?
951 is a California area code covering western Riverside County including Riverside, Moreno Valley, Corona and Temecula. In the wider directory it sits in the West region.
Cities in the 951 area code
- Riverside
- Moreno Valley
- Corona
- Murrieta
- Temecula
- Menifee
- Jurupa Valley
- Hemet
- Perris
- Lake Elsinore
- Eastvale
- Beaumont
- Banning
- San Jacinto
Counties served by 951
Riverside County.
Dialing 951
Riverside, CA is currently served by the single area code 951, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 951 followed by the seven-digit number.
History of the 951 area code
951 went into service on July 17, 2004, created when it was split from 909. It serves Riverside and the surrounding part of California. For how codes are created, split, and overlaid, see how area codes work.
Is 951 a scam or spam risk?
951 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 951 number on your screen is no guarantee the caller is in Riverside, CA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other California area codes
Explore more
See every code in California, compare codes across the West region, or view all Pacific Time codes. You can also browse the 9XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
951 area code FAQ
Where is the 951 area code?
The 951 area code is in California, covering western Riverside County including Riverside, Moreno Valley, Corona and Temecula, in the West region.
What cities are in the 951 area code?
Cities in the 951 area code include Riverside, Moreno Valley, Corona, Murrieta, Temecula, Menifee, Jurupa Valley, Hemet, Perris and Lake Elsinore.
What time zone is 951 in?
951 is in the Pacific Time zone.
When did the 951 area code start?
951 went into service on July 17, 2004.
Do I have to dial 10 digits for 951?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 951 a toll-free or premium code?
No. 951 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.