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840 area code

Area code 840 is in California (CA), USA and some of the main locations covered are San Bernardino, Rancho Cucamonga, Pomona, .. (jump to city list below).

Area code 840 has been in service since 23 February 2021 and is an overlay code part of overlay complex 909/840 (overlaying area codes cover the same geographic area).

07:04:54 AM is the current time in area code 840 (Pacific Time).

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Map of area code 840

More California area codes

NPANXX1 Area served2 Date3
840-200Chino1/4/2021
840-201Fontana3/11/2021
840-202Pomona7/29/2021
840-203San Bernardino7/29/2021
840-204San Bernardino7/29/2021
840-205Claremont10/27/2021
840-206Chino8/10/2021
840-207Arrowhead10/28/2021
840-208Claremont 2/22/2022
840-209Arrowhead8/31/2021
840-210Fontana 12/14/2021
840-212Chino 11/15/2021
840-215Highland 2/28/2022
840-216Arrowhead 3/1/2022
840-219Calimesa9/13/2021
840-222San Bernardino12/24/2020
840-234Arrowhead4/18/2021
840-252Mentone 2/28/2022
840-300Redlands7/15/2021
840-333Pomona12/24/2020
840-336Colton 2/18/2022
840-345Pomona7/7/2021
840-356Arrowhead 2/18/2022
840-400Ontario1/4/2021
840-444Arrowhead12/24/2020
840-465Chino7/7/2021
840-466Upland 2/18/2022
840-500Bigbear City1/27/2022
840-587San Bernardino2/23/2022
840-588Diamond Bar10/28/2021
840-600Colton1/4/2021
840-666Fontana12/24/2020
840-677Etiwanda10/28/2021
840-688Crestline10/25/2021
840-699Ontario7/16/2021
840-777Pomona12/23/2020
840-788Fontana7/16/2021
840-799Rialto7/15/2021
840-800Upland12/24/2020
840-837Pomona 1/10/2022
840-877Marshall7/15/2021
840-888Redlands12/23/2020
840-899Highland7/15/2021
840-900Rialto12/24/2020
840-977Claremont7/15/2021
840-999Upland12/23/2020
  1. The NPA is the Numbering Plan Area (area code) and NXX is the central office code.
  2. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  3. The assignment date. If no date is shown the exchange code was assigned before 2001.

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List of cities in area code 840

City4 County Time5
Angelus OaksSan Bernardino P
Big Bear CitySan Bernardino P
Big Bear LakeSan Bernardino P
BloomingtonSan Bernardino P
Blue JaySan Bernardino P
Bryn MawrSan Bernardino P
CalimesaRiverside P
Cedar GlenSan Bernardino P
Cedarpines ParkSan Bernardino P
ChinoSan Bernardino P
Chino HillsSan Bernardino P
ClaremontLos Angeles P
ColtonSan Bernardino P
Crest ParkSan Bernardino P
CrestlineSan Bernardino P
Diamond BarLos Angeles P
FawnskinSan Bernardino P
FontanaSan Bernardino P
Forest FallsSan Bernardino P
Green Valley LakeSan Bernardino P
GuastiSan Bernardino P
HighlandSan Bernardino P
La VerneLos Angeles P
Lake ArrowheadSan Bernardino P
Loma LindaSan Bernardino P
Lytle CreekSan Bernardino P
MentoneSan Bernardino P
MontclairSan Bernardino P
Mount BaldyLos Angeles P
OntarioSan Bernardino P
PattonSan Bernardino P
PomonaLos Angeles P
Rancho CucamongaSan Bernardino P
RedlandsSan Bernardino P
RialtoSan Bernardino P
RimforestSan Bernardino P
Running SpringsSan Bernardino P
San BernardinoSan Bernardino P
San DimasLos Angeles P
SkyforestSan Bernardino P
SugarloafSan Bernardino P
Twin PeaksSan Bernardino P
UplandSan Bernardino P
WalnutLos Angeles P
YucaipaSan Bernardino P
  1. Listed in the table above are most, often not all places served by area code 840. When two or more places with the same name are located in the same state we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. P stands for Pacific Time (currently 07:04:54 AM).

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