840 Area Code

San Bernardino, California

San Bernardino, California is the largest city covered by the 840 Area Code

Current Time

Pacific Time Zone

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840 Area Code Overview & Map

The 840 area code is a telephone area code in the North American Numbering Plan for the far-eastern part of Los Angeles County and southwestern San Bernardino County in the U.S. state of California. It was introduced in 2021 as an overlay code to complement the existing 909 area code.

When was the 840 Area Code created?

The 840 area code was first put into service in 2021, by the North American Numbering Plan Administration (NANPA). Learn more about the US Area Code System

History

The 840 area code was created from the 909 area code, to meet the growing demand for new telephone numbers in California.

Where is the 840 Area Code located?

The 840 area code serves San Bernardino, California and the surrounding areas.

Overlays

The 840 is an overlay for the 909 area code(s), and serves the same area. Learn about overlays

840 Area Code Map

840 Area Code Map

Cities in the 840 Area Code

The 840 area code includes 38 cites in California.

City Population % in Area Code
San Bernardino, CA 209,924 100%
Fontana, CA 196,069 98%
Rancho Cucamonga, CA 165,269 100%
Ontario, CA 163,924 100%
Pomona, CA 149,058 100%
Rialto, CA 99,171 98%
Chino, CA 77,983 100%
Chino Hills, CA 74,799 96%
Upland, CA 73,732 100%
Redlands, CA 68,747 100%
Diamond Bar, CA 55,544 100%
Eastvale, CA 53,668 10%
Highland, CA 53,104 100%
Colton, CA 52,154 96%
Yucaipa, CA 51,367 100%
Rowland Heights, CA 48,993 23%
Beaumont, CA 36,877 6%
Montclair, CA 36,664 100%
Claremont, CA 34,926 100%
San Dimas, CA 33,371 88%
La Verne, CA 31,063 100%
Walnut, CA 29,172 84%
Bloomington, CA 23,851 93%
Loma Linda, CA 23,261 100%
Lake Arrowhead, CA 12,424 100%
Big Bear City, CA 12,304 100%
Grand Terrace, CA 12,040 100%
Crestline, CA 10,770 100%
Muscoy, CA 10,644 100%
Mentone, CA 8,720 100%
Calimesa, CA 7,879 100%
Big Bear Lake, CA 5,019 100%
Running Springs, CA 4,862 100%
Highgrove, CA 3,988 28%
San Antonio Heights, CA 3,371 100%
Lytle Creek, CA 701 100%
Oak Glen, CA 638 100%
Industry, CA 219 26%

840 Area Code NXX Prefixes

The 840 Area Code (NPA Code) has 59 prefixes (NXX Code). An NXX prefix, also known as a central office code or exchange code, is the three-digit code that follows the area code in a North American telephone number. Learn about NXX Prefixes

Area Code Prefix Usage Carrier Rate Center
840 200 Landline Fractel, LLC Chino
840 201 Wireless New Cingular Wireless Pcs, LLC Fontana
840 202 Wireless New Cingular Wireless Pcs, LLC Pomona
840 203 Wireless New Cingular Wireless Pcs, LLC San Bernardino
840 204 Wireless New Cingular Wireless Pcs, LLC San Bernardino
840 205 Landline Bandwidth.com Clec, LLC - Ca Claremont
840 206 Wireless New Cingular Wireless Pcs, LLC Chino
840 207 Landline T-Mobile USA, Inc. Lake Arrowhead
840 208 Landline Bandwidth.com Clec, LLC - Ca Claremont
840 209 Landline T-Mobile USA, Inc. Lake Arrowhead
840 210 Landline T-Mobile USA, Inc. Fontana
840 212 Landline T-Mobile USA, Inc. Chino
840 213 Landline T-Mobile USA, Inc. Redlands
840 214 Landline T-Mobile USA, Inc. Marshall
840 215 Landline T-Mobile USA, Inc. Highland
840 216 Landline T-Mobile USA, Inc. Lake Arrowhead
840 217 Landline T-Mobile USA, Inc. Fontana
840 218 Wireless Cellco Partnership DBA Verizon Wireless - Ca Chino
840 219 Landline T-Mobile USA, Inc. Calimesa
840 220 Landline Bandwidth.com Clec, LLC - Ca Rialto
840 221 Landline Hd Carrier LLC San Bernardino
840 222 Landline Fractel, LLC San Bernardino
840 223 Landline Bandwidth.com Clec, LLC - Ca Calimesa
840 224 Wireless New Cingular Wireless Pcs, LLC San Bernardino
840 225 Wireless New Cingular Wireless Pcs, LLC Pomona
840 228 Wireless Cellco Partnership DBA Verizon Wireless - Ca Colton
840 229 Wireless Cellco Partnership DBA Verizon Wireless - Ca Claremont
840 234 Landline Fractel, LLC Lake Arrowhead
840 240 Landline Onvoy, LLC - Ca Diamond Bar
840 252 Landline T-Mobile USA, Inc. Mentone
840 300 Landline Fractel, LLC Redlands
840 333 Landline Fractel, LLC Pomona
840 336 Landline Fractel, LLC Colton
840 345 Landline Fractel, LLC Pomona
840 356 Landline Fractel, LLC Lake Arrowhead
840 400 Landline Fractel, LLC Ontario
840 444 Landline Fractel, LLC Lake Arrowhead
840 465 Landline Fractel, LLC Chino
840 466 Landline Ton80 Communications, LLC Upland
840 500 Landline Fractel, LLC Big Bear City
840 587 Landline Fractel, LLC San Bernardino
840 588 Landline Fractel, LLC Diamond Bar
840 600 Landline Fractel, LLC Hesperia
840 666 Landline Fractel, LLC Fontana
840 677 Landline Fractel, LLC Etiwanda
840 688 Landline Fractel, LLC Crestline
840 699 Landline Fractel, LLC Ontario
840 777 Landline Terra Nova Telecom Inc. Pomona
840 788 Landline Fractel, LLC Fontana
840 799 Landline Fractel, LLC Rialto
840 800 Landline Fractel, LLC Upland
840 804 Landline Onvoy, LLC - Ca Claremont
840 837 Landline Ton80 Communications, LLC Pomona
840 877 Landline Fractel, LLC Marshall
840 888 Landline Terra Nova Telecom Inc. Redlands
840 899 Landline Fractel, LLC Highland
840 900 Landline Fractel, LLC Rialto
840 977 Landline Fractel, LLC Claremont
840 999 Landline Terra Nova Telecom Inc. Upland