Area Code Lookup
What Area Code Is Hannibal?
Area code 573 · Missouri
Hannibal uses area code 573. It is located in Missouri.
Area Code Serving Hannibal
Frequently Asked Questions
What area code is Hannibal?
Hannibal uses area code 573. It is located in Missouri.
How do I call Hannibal from outside the US?
To call Hannibal from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-573-XXX-XXXX). The +1 is the country code for all NANPA countries.