Colonial Heights, Tennessee Area Code
Colonial Heights, TN Area Codes are
Colonial Heights, TN is officially utilizing one area code which is area code 423.
In addition to Colonial Heights, TN area code information read more about area code 423 details and Tennessee area codes.
Colonial Heights, TN is located in Sullivan County and observes the Eastern Time Zone. View our Times by Area Code tool.
Select Any Tennessee City or Town Alphabetically
Area Codes Look Up By State and City
Area Codes Look Up in Surrounding Places