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Area Code 815

The 815 area code serves northern Illinois except for the Chicago metro area. The 815 area code has been in service since January 01, 1947.

Illinois Counties within Area Code 815:

Boone, Bureau, Carroll, DeKalb, Ford, Grundy, Henry, Iroquois, Jo Daviess, Kane, Kankakee, Kendall, La Salle, Lee, Livingston, Marshall, McHenry, McLean, Ogle, Putnam, Stephenson, Whiteside Count, Will , and Winnebago.

Illinois Major Cities within Area Code 815:

Rockford, Joliet, DeKalb, Crystal Lake, Romeoville, Plainfield, Kankakee, McHenry, Freeport, Belvidere, Woodstock, New Lenox,  Loves Park, Machesney Park, Lockport, Crest Hill, Ottawa, Bourbonnais, Sycamore, Frankfort, Bradley, Dixon, Shorewood, Sterling, Streator, Morris, Channahon, Pontiac, Minooka, Roscoe, Peru, LaSalle, Rochelle, Harvard, Frankfort Square, Rock Falls, Manteno, South Beloit, Rockton, Princeton, Marengo, Mendota, Manhattan, Bolingbrook, Johnsburg, Braidwood, Sandwich, Lakemoor, Wilmington, Spring Grove.

Area Code 815 Time Zone?

Central time zone is also known as America/Chicago.

Go here to see the complete list of United States Area Codes.

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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