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/909

909 area code

Area code 909 is in California. It covers San Bernardino, Fontana, Ontario and 46 other places: 79 ZIP codes in San Bernardino, Los Angeles, Riverside and 1 other county. Local time there is , Pacific Time. In service since 1992; 840 (2021) overlays it, so a number from there can have either code.

Time zone
Pacific
Largest city
Fontana
Overlays
840
In service since
1992
Rate centres
25
Prefixes assigned
786 (7,860,000 numbers)

Who calls from a 909 number

NANPA records the carrier each block of 909 numbers is assigned to. Of the 7.8 million 909 numbers assigned, 45% are with mobile carriers (T-Mobile, AT&T Mobility and Verizon Wireless); 29% with cable, internet-calling, business and other carriers (Onvoy and Bandwidth); 23% with local phone companies (Frontier); 3% with paging companies.

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 909 numbers
CarrierKindShare
T-MobileMobile20%
FrontierLandline17%
AT&T MobilityMobile12%
Verizon WirelessMobile12%
OnvoyCable, VoIP, other8%
BandwidthCable, VoIP, other6%

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 909

The 20 places with a telephone rate centre of their own using 909, largest first. Each links to its ZIP codes.

Places in area code 909
PlaceZIP codesPopulation
San Bernardino, CA 15 222,724
Fontana, CA 5 214,169
Ontario, CA 4 180,547
Pomona, CA 4 147,943
Rialto, CA 2 104,143
Chino, CA 2 92,652
Hemet, CA 4 91,326
Upland, CA 3 79,257
Redlands, CA 3 73,375
Highland, CA 1 56,675
Colton, CA 1 53,772
Diamond Bar, CA 1 53,355
Claremont, CA 1 36,595
Woodcrest, CA — 17,368
Big Bear City, CA 1 11,431
Calimesa, CA 1 10,902
Crestline, CA 1 9,835
Mentone, CA 1 9,514
Big Bear Lake, CA 1 5,041
Running Springs, CA 1 4,917

Nearby places using 909

These places have no rate centre of their own in NANPA's records; the nearest one uses 909. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 909

79 ZIP codes in 40 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 909 numbers are issued

NANPA's rate centres with the most 909 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 909
Rate centrePlacePrefixes
ONTARIO Ontario 124
S BERNDINO San Bernardino 88
FONTANA Fontana 70
UPLAND Upland 70
CHINO Chino 55
POMONA Pomona 51

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 909

Where is area code 909?

Area code 909 is in California. It covers San Bernardino, Fontana, Ontario and 46 other places: 79 ZIP codes in San Bernardino, Los Angeles, Riverside and 1 other county.

What ZIP codes are in area code 909?

79 ZIP codes, by the town each is mailed to: San Bernardino (15, 92401 to 92427), Fontana (5, 92331 to 92337), Ontario (4, 91758 to 91764), Rancho Cucamonga (5, 91701 to 91739) and 36 more towns. The full list is on this page.

What time zone is area code 909 in?

Pacific time.

Is a 909 number a mobile or a landline?

It can be either. 45% of 909 numbers are assigned to mobile carriers and 23% 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.

What area codes overlay 909?

840. They cover the same area as 909, so a new number there can be given any of them.

Does a 909 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 909 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 909.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/909

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