815 Area Code - Location map, time zone, and phone lookup
Where is area code 815? Area code 815 serves northern Illinois except for the Chicago metro area. It includes the cities of Rockford, Joliet, and DeKalb. It has a single overlay (779) that serves the same …
Area codes 815 and 779 - Wikipedia
They were generally laid out as a region in and around Chicago, a northern band outside Chicago, and two bands in the central and southern parts of the state. 815 was assigned to the northern band …
Area Code 815 - Map, time zone, and phone lookup - CallerCenter
About area code 815: location, common spam callers, related area codes, and more. Includes 815 reverse phone lookup to identify spam callers.
Area Code 815 phone numbers - Whitepages
Browse area code 815 phone numbers, prefixes and exchanges. The 815 area code serves Rockford, Chicago, Arlington Heights, Freeport, DeKalb, covering 214 ZIP codes in 31 counties.
815 area code — information, time zone, map
5 days ago · 815 is an area code located in the state of Illinois, US. The largest city it serves is Rockford. Find out where 815 area code zone from, which states, counties and cities it covers. Get the most …
815 Area Code - National Phone Number Registry
Jan 14, 2026 · Area code 815 is located in Illinois. Get area code location and dialing plans for all phone prefixes in area code 815.
815 Area Code - Map, Phone Lookup, Time Zone - Wirefly
Find 815 area code details including city, time zone, and map. Lookup area code 815 phone number, name, and location.
Complete Guide to Area Code 815: Everything You Should Know
Aug 12, 2025 · What Area Code is 815? The area code 815 serves the northern regions of Illinois, just outside of the Chicago metropolitan area. Notable counties include: Will, Winnebago, McHenry, and …
815 Area Code - Reverse Phone Lookup in IL - USPhoneBook
Where is Area Code 815? Area code (815) is in the state of IL. Below, are the major cities in the area code (815).
Area Code 815 - Illinois - Zipdatamaps
Area Code 815 Boundary Map List of ZIP Codes in Area Code 815 ... List of Counties in Area Code 815 ... List of Major Cities/Towns in Area Code 815