Area Code Lookup
What Area Code Is Casper?
Area code 307 · Wyoming
Casper uses area code 307. It is located in Wyoming.
Area Code Serving Casper
Frequently Asked Questions
What area code is Casper?
Casper uses area code 307. It is located in Wyoming.
How do I call Casper from outside the US?
To call Casper from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-307-XXX-XXXX). The +1 is the country code for all NANPA countries.