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 February 23, 2021 and is an overlay code part of overlay complex 909/840 (overlaying area codes cover the same geographic area).

04:17:19 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
840-200 Chino 1/4/2021
840-201 Fontana 3/11/2021
840-202 Pomona 7/29/2021
840-203 San Bernardino 7/29/2021
840-204 San Bernardino 7/29/2021
840-205 Claremont 10/27/2021
840-206 Chino 8/10/2021
840-207 Arrowhead 10/28/2021
840-208 Claremont 2/22/2022
840-209 Arrowhead 8/31/2021
840-210 Fontana 12/14/2021
840-212 Chino 11/15/2021
840-213 Redlands 8/12/2022
840-214 Marshall 8/12/2022
840-215 Highland 2/28/2022
840-216 Arrowhead 3/1/2022
840-217 Fontana 9/2/2022
840-219 Calimesa 9/13/2021
840-222 San Bernardino 12/24/2020
840-234 Arrowhead 4/18/2021
840-252 Mentone 2/28/2022
840-300 Redlands 7/15/2021
840-333 Pomona 12/24/2020
840-336 Colton 2/18/2022
840-345 Pomona 7/7/2021
840-356 Arrowhead 2/18/2022
840-400 Ontario 1/4/2021
840-444 Arrowhead 12/24/2020
840-465 Chino 7/7/2021
840-466 Upland 2/18/2022
840-500 Bigbear City 1/27/2022
840-587 San Bernardino 2/23/2022
840-588 Diamond Bar 10/28/2021
840-600 Colton 1/4/2021
840-666 Fontana 12/24/2020
840-677 Etiwanda 10/28/2021
840-688 Crestline 10/25/2021
840-699 Ontario 7/16/2021
840-777 Pomona 12/23/2020
840-788 Fontana 7/16/2021
840-799 Rialto 7/15/2021
840-800 Upland 12/24/2020
840-837 Pomona 1/10/2022
840-877 Marshall 7/15/2021
840-888 Redlands 12/23/2020
840-899 Highland 7/15/2021
840-900 Rialto 12/24/2020
840-977 Claremont 7/15/2021
840-999 Upland 12/23/2020
  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 Oaks San Bernardino P
Big Bear City San Bernardino P
Big Bear Lake San Bernardino P
Bloomington San Bernardino P
Blue Jay San Bernardino P
Bryn Mawr San Bernardino P
Calimesa Riverside P
Cedar Glen San Bernardino P
Cedarpines Park San Bernardino P
Chino San Bernardino P
Chino Hills San Bernardino P
Claremont Los Angeles P
Colton San Bernardino P
Crest Park San Bernardino P
Crestline San Bernardino P
Diamond Bar Los Angeles P
Fawnskin San Bernardino P
Fontana San Bernardino P
Forest Falls San Bernardino P
Green Valley Lake San Bernardino P
Guasti San Bernardino P
Highland San Bernardino P
La Verne Los Angeles P
Lake Arrowhead San Bernardino P
Loma Linda San Bernardino P
Lytle Creek San Bernardino P
Mentone San Bernardino P
Montclair San Bernardino P
Mount Baldy Los Angeles P
Ontario San Bernardino P
Patton San Bernardino P
Pomona Los Angeles P
Rancho Cucamonga San Bernardino P
Redlands San Bernardino P
Rialto San Bernardino P
Rimforest San Bernardino P
Running Springs San Bernardino P
San Bernardino San Bernardino P
San Dimas Los Angeles P
Skyforest San Bernardino P
Sugarloaf San Bernardino P
Twin Peaks San Bernardino P
Upland San Bernardino P
Walnut Los Angeles P
Yucaipa San 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 04:17:19 AM).

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