Joliet, IL Area Codes
Joliet is served by area codes 779 and 815. It is in Illinois, Will County. About 131,575 people live in its 6 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 779, 815 |
| State / province | Illinois |
| County | Will County |
| Population | 131,575 |
| ZIP codes | 6 |
| Time zone | Central |
| Coordinates | 41.5188, -88.1005 |
What area code is Joliet in?
ZIP codes in the code footprint
60431, 60432, 60433, 60434, 60435, 60436
Nearby towns and their area codes
Crest Hill 779, 815Lockport 779, 815Shorewood 779, 815New Lenox 779, 815Romeoville 779, 815Channahon 779, 815Plainfield 779, 815Mokena 464, 708
How to dial
Dial 779 + 7 digits for a number in Joliet, or +1 779 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.