Area Code Lookup
What Area Code Is Chattanooga?
Area code 423 · Tennessee
Chattanooga uses area code 423. It is located in Tennessee.
Area Code Serving Chattanooga
Frequently Asked Questions
What area code is Chattanooga?
Chattanooga uses area code 423. It is located in Tennessee.
How do I call Chattanooga from outside the US?
To call Chattanooga from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-423-XXX-XXXX). The +1 is the country code for all NANPA countries.