Area Code Lookup
What Area Code Is Johnson City?
Area code 423 · Tennessee
Johnson City uses area code 423. It is located in Tennessee.
Area Code Serving Johnson City
Frequently Asked Questions
What area code is Johnson City?
Johnson City uses area code 423. It is located in Tennessee.
How do I call Johnson City from outside the US?
To call Johnson City 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.