Area Code Box

Area code 729

Where is area code 729?

Chattanooga, Johnson City and Kingsport, Tennessee

Local time: … (Eastern Time)

729 is a newer area code, in service since September 5, 2025, added on top of 423. See all new area codes.

StateTennessee
CountryUnited States
Main citiesChattanooga, Johnson City and Kingsport
Time zonesEastern Time, Central Time
Overlay area codes423
In service since2025 (created from 423)
Dialing format(729) XXX-XXXX · +1 729 XXX XXXX from abroad

Look up a 729 number

Enter a 3-digit area code or a full 10-digit number.

Cities and towns in area code 729

729 is an overlay, so it covers the same places as 423. Places are listed by how many phone prefixes they have in the area.

Area codes that overlay 729

Questions

Where is area code 729?
Area code 729 is in Tennessee. It serves Chattanooga, Johnson City, Kingsport, Bristol and Cleveland and 71 other cities and towns.
What time zone is area code 729 in?
Area code 729 uses Eastern Time and Central Time. Parts of the area are in different zones, so check the city.
What area codes overlay 729?
423 serves the same area as 729. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
Is a call from area code 729 a scam?
The area code alone doesn’t tell you. Most calls from 729 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 729 number, let it go to voicemail.
When did area code 729 start?
729 went into service in 2025. It was created from area code 423.
Can a 729 number be outside Tennessee?
Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 729 caller can be anywhere.

Other area codes in Tennessee

Area codeMain cities
615Nashville, Murfreesboro and Franklin
629Nashville, Murfreesboro and Franklin
731Jackson, Paris and Dyersburg
865Knoxville, Maryville and Oak Ridge
901Memphis, Collierville and Arlington
931Clarksville, Cookeville and Columbia