Pick 909 if the number should read as Fontana.
The 2004 letter lists Fontana and Ontario among the cities that stayed in 909.
The area codes for Fontana are 909 and 840.
Area codes in Fontana
Get a phone number with the right area code for Fontana.
Fontana uses 909, with 840 laid over it in 2021. The two codes cover Fontana, Ontario and Rancho Cucamonga as one area.
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Fontana has two area codes.
- 909Since 1992Ontario, Fontana and PomonaRancho CucamongaChinoChino Hills
93 FCC complaints
Get a 909 number - 840Since 2021Overlay code
18 FCC complaints
Pick 909 for Fontana, which stayed in the code when Riverside left in 2004.
Pick 909 for the southwest corner of San Bernardino County.
Chino, Chino Hills, Montclair and Colton are named for the same code.
Pick 951 if the number is for Corona or Temecula.
951 covers them. It was split from 909 on July 17, 2004.
People filed 111 FCC complaints about unwanted calls from Fontana area codes in 12 months.
From October 2025 to September 2026, 111 unwanted-call complaints filed with the FCC gave a caller ID number that started with 909 and 840. 909 was named most, on 93 of them (84%).
- 111unwanted-call complaints named a Fontana code
- 909was named on the most of them, 93
- 84%of the Fontana complaints named 909
Fontana codes
How many complaints named a caller ID that starts with each Fontana code.
- 1909Ontario, Fontana and Pomona93
- 2840Overlay code18
Source: Federal Communications Commission, CGB - Consumer Complaints Data (dataset 3xyp-aqkj), issue "Unwanted Calls", read on November 4, 2026. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
This is how you get a Fontana number.
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Type the code you picked.
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People ask these questions about Fontana area codes.
More in the full FAQ.
Yes. 909 covers the southwestern part of that county, including Fontana, Ontario and Chino.
No. Fontana is in 909, which does reach the eastern edge of Los Angeles County at Pomona and Claremont.
A local call in Fontana is dialed with 1 plus ten digits, whichever of its codes the number starts with. The area code is part of every number you give out.
From October 2025 to September 2026, people filed 111 FCC complaints about unwanted calls from numbers that start with a Fontana code: 909 (93) and 840 (18). A complaint is one person's report. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
Yes. You type the area code you want when you create a number, and you do not need to live in Fontana. Calls ring the phone you already have, and texts land in your ExpressNumber inbox.
No. Your numbers are receive-only: they take calls and texts, and they never make them. You answer calls on your own phone, and you cannot reply to a text from the inbox.
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Codes around Fontana
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Every fact on this page comes from public numbering records.
The codes, the places and the years are rows of the North American Numbering Plan Administrator's area code database, and the complaints are the FCC's own.
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