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area codes

840 Area Code

Area Code 840 is located in California in the USA. It serves the main area of San Bernardino, Rancho Cucamonga, Pomona and many more.

Area Code 840 was put into service since February 23, 2021 and has an overlay complex 909/840.

California Counties within Area Code 840

Los Angeles, Riverside, and San Bernardino.

California Major Cities within Area Code 840

Los Angles, San Bernardino, Riverside, Chino Hills, Claremont, Colton, Diamond Bar, Fontana, Highland, La Verne, Montclair, Ontario, Pomona, Rancho Cucamonga, Redlands, Rialto, San Bernardino, San Dimas, Upland, and Yucaipa.

Area Code 840 Time Zone?

840 is located in the Pacific time zone, which is known as America/Los Angeles.

By Maurelio Canon

A tech geek and an avid gamer. I love to learn about new technologies and share that knowledge with my readers.

I graduated with a degree in IT, and now I'm an editor at several technology websites. My job is to make sure that all of our content is up-to-date and accurate, so we can help you answer your questions about the latest technology.

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