Area code 423
Area code 423 is a Tennessee area code, in service since September 11, 1995.
It was added as an overlay on 615: both codes serve the same area, so neighbors can have numbers in either one.
729 serves the same area too.
Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
It spans more than one time zone: Eastern Time and Central Time.
Map
Main cities in area code 423
Overlays and neighboring area codes
Overlay, serving the same area: 729.
Neighboring area codes: 706, 770, 205, 256, 540, 270, 606, 704, 828, 336, 803, 864, 615, 931, 865, 304, 276.
Counties in area code 423
- Hamilton County
- Polk County
- Marion County
- Claiborne County
- Sullivan County
- Washington County
- Campbell County
- Greene County
- Hawkins County
- Morgan County
- McMinn County
- Scott County
- Bradley County
- Carter County
- Johnson County
- Fentress County
- Hamblen County
- Monroe County
- Rhea County
- Grundy County
- Unicoi County
- Bledsoe County
- Hancock County
- Meigs County
- Pickett County
- Sequatchie County
- Van Buren County
Towns in area code 423
- Chattanooga
- Johnson City
- Kingsport
- Cleveland
- Morristown
- Bristol
- Greeneville
- Athens
- Elizabethton
- New Tazewell
- Piney Flats
- Soddy Daisy
- Afton
- Allardt
- Apison
- Arthur
- Bakewell
- Benton
- Birchwood
- Blountville
- Bluff City
- Bulls Gap
- Butler
- Calhoun
- Caryville
- Charleston
- Chuckey
- Church Hill
- Clairfield
- Clarkrange
- Coalmont
- Cokercreek
- Collegedale
- Conasauga
- Copperhill
- Cumberland Gap
- Dayton
- Decatur
- Deer Lodge
- Delano
- Ducktown
- Duff
- Dunlap
- Eagan
- Eidson
- Elgin
- Englewood
- Erwin
- Etowah
- Evensville
- Fall Branch
- Farner
- Flag Pond
- Georgetown
- Grandview
- Graysville
- Grimsley
- Gruetli Laager
- Guild
- Hampton
And 122 more towns: every town in Tennessee.
Local numbers in area code 423
These 423 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (423) 770-7654Church Hill, TN$59View & buy
- (423) 810-8008Charleston, TN$69View & buy
- (423) 980-0888Chattanooga, TN$69View & buy
- (423) 720-7070Newport, TN$89View & buy
- (423) 770-1717Church Hill, TN$89View & buy
- (423) 810-8080Charleston, TN$89View & buy
- (423) 220-8880Erwin, TN$59View & buy
- (423) 540-8880Newport, TN$59View & buy
- (423) 670-8767Johnson City, TN$59View & buy
- (423) 688-9876Sneedville, TN$59View & buy
- (423) 690-7770Morristown, TN$59View & buy
- (423) 717-6789Athens, TN$59View & buy
We may earn a commission when you buy through our links. Numbers are sold and delivered by Exclusive Digits.