951 Area CodeRiverside, CA
Area code 951 covers Riverside and nearby communities in California, in the Pacific Time (PT) zone, home to about 1.9 million people across 54 cities. It overlays 909, so the same region uses both and every local call needs all ten digits.
Overview
- Major City
- Riverside
- State
- California (CA)
- Timezone
- Pacific Time (PT)
- Current Time
- Overlay
- Yes – shares area with 909
Where is area code 951?
Area code 951 serves part of Riverside, CA and the surrounding areas. It has a single overlay (909) that serves the same area.
Overview of the 951 Area Code
What is the 951 area code?
The 951 area code serves Riverside, California, alongside other established area codes. When you see a 951 number, it indicates a local number within this geographic area.
Why was area code 951 created?
The 951 area code was introduced as an overlay to add numbers in Riverside once the existing area code 909 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 951 Area Code
The 951 area code serves Riverside and surrounding areas in California. It operates within the Pacific Time (PT) time zone. It complements the coverage of area code 909. This area code covers several key cities, including:
- Riverside
- Moreno Valley
- Corona
- Menifee
- Murrieta
- Temecula
Got a call from a 951 number? It came from Riverside, CA. Since 951 overlays with 909, every local call in the region needs all ten digits to land on the right line. Inside 951, Riverside holds about 17% of the population; the rest is split across 53 smaller cities.
Riverside Area Codes Overview
Riverside is served by multiple area codes, reflecting its telecommunications needs. The 951 area code operates alongside 909. Here are the area codes serving this region:
The introduction of the 951 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 951 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Riverside | CA | 323,757 | 4% | 100% |
| Moreno Valley | CA | 213,919 | 2% | 99% |
| Corona | CA | 161,540 | 2% | 100% |
| Menifee | CA | 117,041 | 2% | 100% |
| Murrieta | CA | 112,539 | 2% | 100% |
| Temecula | CA | 112,431 | 1% | 100% |
| Hemet | CA | 92,912 | 1% | 100% |
| Perris | CA | 83,032 | 2% | 100% |
| Lake Elsinore | CA | 73,595 | 2% | 100% |
| Eastvale | CA | 70,751 | 0% | 90% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 951 been reported for unwanted calls?
Yes – 622 unwanted-call complaints were reported to the FTC for numbers showing a 951 area code (May 29 – Jul 2, 2026).
- 45% robocalls
- ↑ 11% vs prior period
Most-reported subjects
- Other47%295
- Calls pretending to be government, businesses, or family and friends13%78
- Reducing your debt (credit cards, mortgage, student loans)11%67
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Which prefixes and exchanges belong to area code 951?
63% assigned to a telco
- 58% Landline
- 42% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (951)200- | Wireless | New Cingular Wireless Pcs |
| (951)201- | Wireless | Verizon Wireless |
| (951)202- | Wireless | Verizon Wireless |
| (951)203- | Wireless | Verizon Wireless |
| (951)204- | Wireless | Verizon Wireless |
| (951)205- | Wireless | Verizon Wireless |
| (951)206- | Wireless | Verizon Wireless |
| (951)207- | Wireless | Sprint Spectrum |
| (951)208- | Landline | Time Warner Cab |
| (951)210- | Wireless | Sprint Spectrum |
Frequently Asked Questions about the 951 Area Code
Who called me from a 951 number?
A 951 number is assigned to Riverside, California, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 951 code to look nearby, so a 951 number doesn't prove the caller is local. Recently, 622 unwanted-call complaints were reported to the FTC for numbers showing the 951 code (45% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 951 a scam area code?
No area code is a scam on its own. 951 is a normal, officially assigned code for Riverside, California. Spam callers spoof local codes to raise the odds you answer, so 951 on your caller ID says nothing about who is really calling. Recently, 622 unwanted-call complaints were reported to the FTC for numbers showing the 951 code (45% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 951 area code?
Repeated calls from different 951 numbers are usually spoofing: a robocaller rotates through 951 numbers so each call looks local and slips past simple blocks. Recently, 622 unwanted-call complaints were reported to the FTC for numbers showing the 951 code (45% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 951 number?
If you aren't expecting a 951 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 951 area code?
Block a single 951 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 951 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 951?
Area code 951 covers Riverside and the surrounding area in California, spanning 54 cities with about 1,942,176 residents. It shares its area with overlay code 909.
Is 951 a real area code?
Yes. 951 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Riverside, California. A real code can still show up on spoofed spam calls, so treat unknown 951 calls with normal caution.
What timezone is the 951 area code in?
The 951 area code is in the Pacific Time (PT). Because a number can be kept when someone moves or switches to VoIP, a specific 951 caller may not be in that zone.
How do I call a 951 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 951 and the seven-digit number. From a mobile phone you can usually just enter +1 951 followed by the number and let the phone add the exit code for you.