Area Code Lookup
What Area Code Is Windham?
Area code 603 · New Hampshire
Windham uses area code 603. It is located in New Hampshire.
Area Code Serving Windham
Frequently Asked Questions
What area code is Windham?
Windham uses area code 603. It is located in New Hampshire.
How do I call Windham from outside the US?
To call Windham from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-603-XXX-XXXX). The +1 is the country code for all NANPA countries.