Introduction
The 951 area code covers western Riverside County in Southern California, including the cities of Riverside, Corona, Moreno Valley, Hemet, Murrieta and Temecula. It was created in 2004, when the old 909 area code was split in two.
Unlike many California codes, 951 has no overlay, so every number in the region still starts with 951. The sections below walk through its reach, its clock, the 2004 split, the country code confusion, ZIP Codes, warning signs on calls, dialing, and getting a 951 number for a business.
- 951 serves western Riverside County, including Riverside, Corona, Moreno Valley, Hemet, Murrieta and Temecula.
- It split from 909 in 2004: permissive dialing began on July 17, and 951 became mandatory on October 30.
- No overlay shares the area, but local calls have needed 1 + 951 + the number since October 2021.
- 951 is not a country code. Riverside numbers use +1, and the region keeps Pacific Time.
Where Is the 951 Area Code?
Area code 951 is a Southern California code for the western part of Riverside County. If you're looking up area code 951 in the USA, the state is California and the anchor city is Riverside, the county's namesake.
Its neighbors explain its shape. To the north, San Bernardino County stayed on 909 when the region was divided; the CPUC drew that line along rate center boundaries that roughly follow the Riverside-San Bernardino county line. To the east, Palm Springs and the rest of the Coachella Valley use 760 and 442.
So "Riverside County" and "951" are not the same thing. A number from the city of Riverside starts with 951, but a number from Palm Springs or Blythe, both also in Riverside County, does not.
Cities and Counties in the 951 Area Code
Cities and communities with 951 numbers include:
- Riverside, including its Arlington neighborhood
- Corona
- Moreno Valley
- Hemet
- Lake Elsinore
- Murrieta and Temecula
- Sun City
All of these are in Riverside County. The 2003 split order put the new code south of a west-to-east line through the middle of the old 909 region, a line that approximately separates Riverside and San Bernardino counties, so small differences from the county boundary are possible near the edges.
A 951 number shows where a line was first assigned, not where the person using it lives today. Someone who moved from Corona to Texas years ago may still call you from a 951 mobile number.
951 Area Code Time Zone (Pacific Time)
All of area code 951 keeps Pacific Time, the zone federal rules assign to California. Daylight saving time begins on the second Sunday in March, when Riverside moves from UTC−8 to UTC−7, and ends on the first Sunday in November.
The East Coast changes its clocks on the same dates, so Riverside stays three hours behind New York all year. Central Time is two hours ahead of Riverside.
If you call Riverside County customers from the East Coast, 11 a.m. your time is 8 a.m. for them. Late morning or afternoon Eastern is a safer window.
How 951 Split From 909 in 2004
Before 2004, western Riverside County shared area code 909 with San Bernardino County. With 909's supply of prefixes forecast to be used up by late 2003, the CPUC acted: on November 13, 2003, the CPUC approved a two-way geographic split: the northern area kept 909 and the southern area received 951.
| Date | What happened |
|---|---|
| November 13, 2003 | The CPUC approves splitting 909 along rate center boundaries |
| July 17, 2004 | Permissive dialing begins: calls to the new region connect with either 909 or 951 |
| October 30, 2004 | 951 becomes mandatory; dialing 909 for a 951 number plays a recording asking you to redial |
| February 27, 2005 | The first prefixes under the new area code are activated |
A split works differently from an overlay. Instead of adding a second code on top, it moves part of the map to a new one, so southern 909 customers kept their seven digits but had to give out a new area code. No second code has joined 951 since, which is why the region still has a single area code.
Is 951 a Country Code? What That Search Really Means
No. 951 is a US area code. Every US number sits under country code +1, which the United States shares with Canada and several Caribbean countries and territories. Written in international format, a Riverside number reads +1 951 555 0142.
The international list of country codes has no +951. The nearest assigned code is +95, which belongs to Myanmar, and a Myanmar number follows the plus sign with 95, not with a 1. If you see 951 at the start of a ten-digit number with no country code shown, it is a Riverside County number.
951 Area Code vs ZIP Codes
There's no such thing as a 951 ZIP Code, even though "951 area code zip code" is a common search. ZIP Codes are assigned by the US Postal Service for mail delivery, while area codes come from the telephone numbering plan. Western Riverside County has one area code and many ZIP Codes, and the two sets of boundaries were never meant to line up.
If you're trying to place a 951 caller on a map, the area code only narrows it to the region. For a mailing address, the USPS ZIP Code lookup turns a street address into its ZIP Code.
How to Tell If a Call From 951 Is Legitimate
A call from 951 on its own tells you very little. Scammers can fake caller ID to show a local-looking number, the FTC notes, so what happens during the call matters more than the digits.
- 1Let an unknown number go to voicemail if you're unsure. A real caller can leave a name and a reason.
- 2Listen for pressure. Threats of arrest, a closed account or a missed deadline are meant to stop you from thinking it over.
- 3Say no to unusual payment requests. Gift cards, wire transfers, cryptocurrency and payment apps are the methods the FTC says scammers insist on.
- 4Keep one-time passcodes, passwords and your Social Security number to yourself.
- 5Return the call only on a number you look up independently, for example on the company's website or a statement.
If you lost money or shared information, report it at ReportFraud.ftc.gov. Unwanted sales calls can be reported through DoNotCall.gov, though scammers ignore the registry. Block repeat numbers in your phone's settings, through your carrier's call-blocking tools or with a blocking app.
How to Dial a 951 Phone Number
951 has no overlay, yet seven-digit dialing is gone here too. The 951 area code had phone numbers that began with 988 after the area code. After the FCC made 988 the three-digit code for the suicide and crisis hotline, 951 became one of nine California area codes ordered to switch to 1+10-digit dialing. That change took effect on October 24, 2021.
Inside the region and from anywhere else in the US or Canada, the format is the same: 1, then 951, then the seven-digit number, as in 1 (951) 555-0142. Callers outside North America start with their own international exit code and then dial 1 951 and the local number, which is why it is usually printed as +1 951 555 0142.
Dialing 988 by itself still reaches the hotline; the switch only changed how regular numbers are dialed.
How to Get a 951 Phone Number for Your Business
A Temecula real estate office, a Corona contractor or an online store with Riverside County customers can all use a 951 number without a desk in the region. The number is tied to a cloud phone account rather than a physical line, and it rings wherever you pick up.
- 1Search the California local numbers for 951. The region has no overlay, so every local number there starts with 951.
- 2Set up call handling: have calls ring the mobile and desktop apps, greet callers with an auto attendant, and enable texting on the number.
- 3Keep your current line by porting it, or run the new number alongside it during a free trial.
Ringflow offers local numbers in many US area codes, listed by state in the US area code directory and on the California area codes page. Availability in 951 depends on current inventory, so check it during signup.
Conclusion
Riverside, Corona, Moreno Valley, Hemet, Lake Elsinore, Murrieta and Temecula all share one code: 951. Carved out of 909 in 2004 and never overlaid since, it keeps Pacific Time and has required 1+10-digit dialing since 2021.
It isn't a country code, and a 951 caller deserves the same checks as anyone else you don't know. For businesses serving the region, Ringflow can set up a local number with app calling, texting and porting, starting with a free trial.
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Set Up a Local Number for Riverside County Customers
Ringflow gives your business a local California number that rings in its mobile and desktop apps. Try it free, and port your current number over when you're ready.
FAQ
The 951 area code is in Southern California, in western Riverside County. It covers Riverside, Corona, Moreno Valley, Hemet, Lake Elsinore, Murrieta and Temecula, while San Bernardino County to the north uses 909.
The 951 area code is on Pacific Time. Riverside County runs on Pacific Standard Time (UTC−8) in winter and Pacific Daylight Time (UTC−7) from March to November, staying three hours behind the East Coast.
No. 951 is a US area code under country code +1, so an international caller dials +1 951 and then seven digits. No country uses +951; the nearest assigned code, +95, belongs to Myanmar.
Not necessarily. Scammers spoof local numbers too, so judge an unexpected 951 call by its content: hang up on pressure or requests for gift cards, wire transfers or passcodes, and report fraud to the FTC.
Open an account with a provider offering California local numbers, choose an available 951 number, then pick the devices or greeting that answer it. Ringflow bundles app calling, an auto attendant, texting and porting, and you can start on a free trial.
