909
Covers southern California
In service since 1992
Overlay with 840
City facts
Fontana area codes
Area codes for southern California: history, overlays and how to dial.
909840
Fontana uses area codes 909 and 840. Because more than one area code serves the same area, local calls need all ten digits.
About these area codes
840
Covers southern California
In service since 1992
Overlay with 909
How to call a number in Fontana
Inside the US
1 (909) 555-0123Dial 1, the area code, then the seven-digit number.Local call
(909) 555-0123Overlay area: always include the area code.From outside the US
+1 909 555 0123Use your country's exit code or +, then 1 for the US.Fontana is on Pacific Time (PT); check the time before calling from another zone.
Other cities that share these codes
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 951 | Jurupa Valley | 7 mi |
| 760 | San Bernardino | 8 mi |
| 442 | Hesperia | 20 mi |
| 626 | West Covina | 29 mi |
| 562 | Fullerton | 32 mi |
| 657 | Fullerton | 32 mi |
| 714 | Fullerton | 32 mi |
| 949 | Orange County | 33 mi |
Fontana quick facts
Fontana was founded in 1913 and incorporated on June 25, 1952. It is named for the Italian word for fountain.
Founded1913
Incorporated1952June 25, 1952
CountySan Bernardino CountyCalifornia
Area codes909, 840Population211,921Census ACS estimateZIP codes392335, 92336, 92337Elevation1,237 ft377 m
Time zonePacific TimePT
Dates, namesake and elevation from Wikipedia: Fontana, California and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Fontana?
Fontana uses area codes 909 and 840. Because more than one area code serves the same area, local calls need all ten digits.
When did area code 909 start?
Area code 909 dates from 1992.
When did area code 840 start?
Area code 840 dates from 1992.
Do I need to dial the area code for local calls in Fontana?
Yes. 909 and 840 share the same area as an overlay, so every local call needs the area code plus the seven-digit number (ten digits).
What time zone is area code 909 in?
Fontana is on Pacific Time (PT).
What other cities use area code 909?
Other cities in this network that share 909 and 840 include San Bernardino, Rancho Cucamonga, Moreno Valley, Corona, West Covina.
Sources: Area codes 909 and 840, Area codes 909 and 840 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.