Area Code Lookup
What Area Code Is Ottumwa?
Area code 641 · Iowa
Ottumwa uses area code 641. It is located in Iowa.
Area Code Serving Ottumwa
Frequently Asked Questions
What area code is Ottumwa?
Ottumwa uses area code 641. It is located in Iowa.
How do I call Ottumwa from outside the US?
To call Ottumwa from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-641-XXX-XXXX). The +1 is the country code for all NANPA countries.