Area Code Lookup
What Area Code Is Chillicothe?
2 area codes serve Chillicothe
Chillicothe is served by area codes 660, 740. It spans Missouri and Ohio.
Area Codes Serving Chillicothe
Frequently Asked Questions
What area code is Chillicothe?
Chillicothe is served by area codes 660, 740.
Why does Chillicothe 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). Chillicothe now has 2 area codes — 660 and 740 — covering the same or overlapping areas.
How do I call Chillicothe from outside the US?
To call Chillicothe from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-660-XXX-XXXX). The +1 is the country code for all NANPA countries.