Area code 815
Area code 815 is a telephone area code in the North American Numbering Plan. It serves Illinois, the United States.
- 815area code
- ILIllinois
- UScountry
- 1-Jan-47in service
How to dial a 815 number
From within the United States and Canada, dial 1, then 815, then the seven-digit number. From another country, dial your international access code, then +1 815 and the seven-digit number.
Area code 815 covers the same territory as 779. When several area codes share one area like this, it is called an overlay.
Other area codes in Illinois
217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 847, 861, 872
Frequently asked questions
Where is area code 815?
Area code 815 serves Illinois, the United States.
What is the country code for a 815 number?
Numbers with North American area codes use the country calling code +1.