Area Code Lookup
What Area Code Is Decatur?
4 area codes serve Decatur
Decatur is served by area codes 217, 256, 938, 940. It spans Illinois and Alabama and Texas.
Area Codes Serving Decatur
Frequently Asked Questions
What area code is Decatur?
Decatur is served by area codes 217, 256, 938, 940.
Why does Decatur 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). Decatur now has 4 area codes — 217 and 256 and 938 and 940 — covering the same or overlapping areas.
How do I call Decatur from outside the US?
To call Decatur 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.