Question 1

What is the area code for Knoxville?

Accepted Answer

The main area code for Knoxville, Tennessee is 423. Knoxville is now served by 3 area codes in total: 423, 865, 729.

Question 2

How many area codes does Knoxville have?

Accepted Answer

Knoxville has 3 area codes: 423, 865, 729.

Question 3

Why does Knoxville have more than one area code?

Accepted Answer

As Knoxville used up the numbers available in its original area code (423, in service since 1995), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

Question 4

How do you dial a Knoxville number?

Accepted Answer

Dial all 10 digits — the area code (423 or 865 or 729) followed by the 7-digit local number. From outside the U.S., dial +1, then the area code and number.

Area codes in Knoxville, Tennessee

Area codes serving Knoxville