Area Code Lookup
What Area Code Is Killeen?
Area code 254 · Texas
Killeen uses area code 254. It is located in Texas.
Area Code Serving Killeen
Frequently Asked Questions
What area code is Killeen?
Killeen uses area code 254. It is located in Texas.
How do I call Killeen from outside the US?
To call Killeen from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-254-XXX-XXXX). The +1 is the country code for all NANPA countries.