Area Code Lookup
What Area Code Is Mattoon?
2 area codes serve Mattoon · Illinois
Mattoon is served by area codes 217, 447. It is located in Illinois.
Area Codes Serving Mattoon
Frequently Asked Questions
What area code is Mattoon?
Mattoon is served by area codes 217, 447. It is located in Illinois.
Why does Mattoon 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). Mattoon now has 2 area codes — 217 and 447 — covering the same or overlapping areas.
How do I call Mattoon from outside the US?
To call Mattoon from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-217-XXX-XXXX). The +1 is the country code for all NANPA countries.