Area Code Lookup
What Area Code Is Rockford?
2 area codes serve Rockford · Illinois
Rockford is served by area codes 779, 815. It is located in Illinois.
Area Codes Serving Rockford
Frequently Asked Questions
What area code is Rockford?
Rockford is served by area codes 779, 815. It is located in Illinois.
Why does Rockford have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). Rockford now has 2 area codes — 779 and 815 — covering the same or overlapping areas.
How do I call Rockford from outside the US?
To call Rockford from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-779-XXX-XXXX). The +1 is the country code for all NANPA countries.