Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — AREA-CODE/951

951 area code

Area code 951 is in California. It covers Riverside, Moreno Valley, Corona and 38 other places: 64 ZIP codes in Riverside County. Local time there is , Pacific Time. In service since 2004, with no overlay.

Time zone
Pacific
Largest city
Riverside
Overlays
none
In service since
2004
Rate centres
21
Prefixes assigned
696 (6,960,000 numbers)

Who calls from a 951 number

NANPA records the carrier each block of 951 numbers is assigned to. Of the 6.8 million 951 numbers assigned, 47% are with mobile carriers (T-Mobile, Verizon Wireless and AT&T Mobility); 34% with cable, internet-calling, business and other carriers (Onvoy); 19% with local phone companies (AT&T and Frontier).

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 951 numbers
CarrierKindShare
T-MobileMobile21%
Verizon WirelessMobile13%
OnvoyCable, VoIP, other13%
AT&T MobilityMobile12%
AT&TLandline10%
FrontierLandline9%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 951

The 12 places with a telephone rate centre of their own using 951, largest first. Each links to its ZIP codes.

Places in area code 951
PlaceZIP codesPopulation
Riverside, CA 17 319,069
Moreno Valley, CA 7 211,666
Corona, CA 7 159,670
Murrieta, CA 3 112,064
Temecula, CA 5 111,167
Hemet, CA 4 91,326
Perris, CA 4 80,511
Sun City, CA 2 50,301
Mira Loma, CA 1 37,983
Banning, CA 1 31,093
Woodcrest, CA — 17,368
Idyllwild, CA 1 4,016

Nearby places using 951

These places have no rate centre of their own in NANPA's records; the nearest one uses 951. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 951

64 ZIP codes in 21 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 951 numbers are issued

NANPA's rate centres with the most 951 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 951
Rate centrePlacePrefixes
RIVERSIDE Riverside 148
CORONA Corona 88
TEMECULA Temecula 58
PERRIS Perris 55
MORENO Moreno Valley 52
ARLINGTON — 50

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 951

Where is area code 951?

Area code 951 is in California. It covers Riverside, Moreno Valley, Corona and 38 other places: 64 ZIP codes in Riverside County.

What ZIP codes are in area code 951?

64 ZIP codes, by the town each is mailed to: Riverside (17, 92501 to 92522), Moreno Valley (7, 92551 to 92557), Corona (7, 92877 to 92883), Murrieta (3, 92562 to 92564) and 17 more towns. The full list is on this page.

What time zone is area code 951 in?

Pacific time.

Is a 951 number a mobile or a landline?

It can be either. 47% of 951 numbers are assigned to mobile carriers and 19% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

Does a 951 number mean the caller is in California?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 951 call can come from anywhere.

Other area codes in California

All 41 California area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 951.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/951

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