To faciltiate users, the United States of America is divided into regions known as Area Codes, corresponding to particular geographic telephone dialing areas.
An area code denotes the regional location of a phone number within the United States.
The Area Code table below shows an area codes each.
Area Code 423 listing, by city
@The cities listed with each area code are the major cities for that area code;
| City / State | Area code | Zip Code | County | Iso | |
|---|---|---|---|---|---|
| Afton (Tennessee) | 423 | 37616 | Greene | US-TN | |
| Apison (Tennessee) | 423 | 37302 | Hamilton | US-TN | |
| Arthur (Tennessee) | 423 | 37707 | Claiborne | US-TN | |
| Athens (Tennessee) | 423 | 37303 | McMinn | US-TN | |
| Athens (Tennessee) | 423 | 37371 | Mcminn | US-TN | |
| Bakewell (Tennessee) | 423 | 37304 | Hamilton | US-TN | |
| Benton (Tennessee) | 423 | 37307 | Polk | US-TN | |
| Birchwood (Tennessee) | 423 | 37308 | Hamilton | US-TN | |
| Blountville (Tennessee) | 423 | 37617 | Sullivan | US-TN | |
| Bluff City (Tennessee) | 423 | 37618 | Sullivan | US-TN | |
| Bristol (Tennessee) | 423 | 37620 | Sullivan | US-TN | |
| Bristol (Tennessee) | 423 | 37621 | Sullivan | US-TN | |
| Bristol (Tennessee) | 423 | 37625 | Sullivan | US-TN | |
| Bulls Gap (Tennessee) | 423 | 37711 | Hawkins | US-TN | |
| Butler (Tennessee) | 423 | 37640 | Johnson | US-TN | |
| Calhoun (Tennessee) | 423 | 37309 | McMinn | US-TN | |
| Caryville (Tennessee) | 423 | 37714 | Campbell | US-TN | |
| Charleston (Tennessee) | 423 | 37310 | Bradley | US-TN | |
| Chattanooga (Tennessee) | 423 | 37401 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37402 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37403 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37404 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37405 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37406 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37407 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37408 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37409 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37410 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37411 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37412 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37414 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37415 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37416 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37419 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37421 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37422 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37424 | Hamilton | US-TN | |
| Chattanooga (Tennessee) | 423 | 37450 | Hamilton | US-TN | |
| Chuckey (Tennessee) | 423 | 37641 | Greene | US-TN | |
| Church Hill (Tennessee) | 423 | 37642 | Hawkins | US-TN | |
| Clairfield (Tennessee) | 423 | 37715 | Claiborne | US-TN | |
| Cleveland (Tennessee) | 423 | 37311 | Bradley | US-TN | |
| Cleveland (Tennessee) | 423 | 37312 | Bradley | US-TN | |
| Cleveland (Tennessee) | 423 | 37320 | Bradley | US-TN | |
| Cleveland (Tennessee) | 423 | 37323 | Bradley | US-TN | |
| Cleveland (Tennessee) | 423 | 37364 | Bradley | US-TN | |
| Coalfield (Tennessee) | 423 | 37719 | Morgan | US-TN | |
| Coker Creek (Tennessee) | 423 | 37314 | Monroe | US-TN | |
| Collegedale (Tennessee) | 423 | 37315 | Hamilton | US-TN | |
| Conasauga (Tennessee) | 423 | 37316 | Polk | US-TN | |
| Copperhill (Tennessee) | 423 | 37317 | Polk | US-TN | |
| Corryton (Tennessee) | 423 | 37721 | Knox | US-TN | |
| Cosby (Tennessee) | 423 | 37722 | Cocke | US-TN | |
| Cumberland Gap (Tennessee) | 423 | 37724 | Claiborne | US-TN | |
| Dayton (Tennessee) | 423 | 37321 | Rhea | US-TN | |
| Decatur (Tennessee) | 423 | 37322 | Meigs | US-TN | |
| Decherd (Tennessee) | 423 | 37324 | Franklin | US-TN | |
| Deer Lodge (Tennessee) | 423 | 37726 | Morgan | US-TN | |
| Del Rio (Tennessee) | 423 | 37727 | Cocke | US-TN | |
| Delano (Tennessee) | 423 | 37325 | Polk | US-TN | |
| Ducktown (Tennessee) | 423 | 37326 | Polk | US-TN | |
| Duff (Tennessee) | 423 | 37729 | Campbell | US-TN | |
| Dunlap (Tennessee) | 423 | 37327 | Sequatchie | US-TN | |
| Eagan (Tennessee) | 423 | 37730 | Claiborne | US-TN | |
| Eidson (Tennessee) | 423 | 37731 | Hawkins | US-TN | |
| Elgin (Tennessee) | 423 | 37732 | Scott | US-TN | |
| Elizabethton (Tennessee) | 423 | 37643 | Carter | US-TN | |
| Elizabethton (Tennessee) | 423 | 37644 | Carter | US-TN | |
| Elora (Tennessee) | 423 | 37328 | Lincoln | US-TN | |
| Englewood (Tennessee) | 423 | 37329 | McMinn | US-TN | |
| Erwin (Tennessee) | 423 | 37650 | Unicoi | US-TN | |
| Etowah (Tennessee) | 423 | 37331 | McMinn | US-TN | |
| Evensville (Tennessee) | 423 | 37332 | Rhea | US-TN | |
| Fall Branch (Tennessee) | 423 | 37656 | Washington | US-TN | |
| Farner (Tennessee) | 423 | 37333 | Polk | US-TN | |
| Flag Pond (Tennessee) | 423 | 37657 | Unicoi | US-TN | |
| Georgetown (Tennessee) | 423 | 37336 | Bradley | US-TN | |
| Grandview (Tennessee) | 423 | 37337 | Rhea | US-TN | |
| Graysville (Tennessee) | 423 | 37338 | Rhea | US-TN | |
| Greeneville (Tennessee) | 423 | 37743 | Greene | US-TN | |
| Greeneville (Tennessee) | 423 | 37744 | Greene | US-TN | |
| Greeneville (Tennessee) | 423 | 37745 | Greene | US-TN | |
| Guild (Tennessee) | 423 | 37340 | Marion | US-TN | |
| Hampton (Tennessee) | 423 | 37658 | Carter | US-TN | |
| Harrison (Tennessee) | 423 | 37341 | Hamilton | US-TN | |
| Harrogate (Tennessee) | 423 | 37752 | Claiborne | US-TN | |
| Helenwood (Tennessee) | 423 | 37755 | Scott | US-TN | |
| Hixson (Tennessee) | 423 | 37343 | Hamilton | US-TN | |
| Huntsville (Tennessee) | 423 | 37756 | Scott | US-TN | |
| Jacksboro (Tennessee) | 423 | 37757 | Campbell | US-TN | |
| Jasper (Tennessee) | 423 | 37347 | Marion | US-TN | |
| Jellico (Tennessee) | 423 | 37762 | Campbell | US-TN | |
| Johnson City (Tennessee) | 423 | 37601 | Washington | US-TN | |
| Johnson City (Tennessee) | 423 | 37602 | Washington | US-TN | |
| Johnson City (Tennessee) | 423 | 37604 | Washington | US-TN | |
| Johnson City (Tennessee) | 423 | 37605 | Washington | US-TN | |
| Johnson City (Tennessee) | 423 | 37614 | Washington | US-TN | |
| Johnson City (Tennessee) | 423 | 37615 | Washington | US-TN | |
| Jonesborough (Tennessee) | 423 | 37659 | Washington | US-TN | |
| Kingsport (Tennessee) | 423 | 37660 | Sullivan | US-TN | |
| Kingsport (Tennessee) | 423 | 37662 | Sullivan | US-TN | |
| Kingsport (Tennessee) | 423 | 37663 | Sullivan | US-TN | |
| Kingsport (Tennessee) | 423 | 37664 | Sullivan | US-TN | |
| Kingsport (Tennessee) | 423 | 37665 | Sullivan | US-TN | |
| Kingsport (Tennessee) | 423 | 37669 | Sullivan | US-TN | |
| Kyles Ford (Tennessee) | 423 | 37765 | Hancock | US-TN | |
| La Follette (Tennessee) | 423 | 37766 | Campbell | US-TN | |
| Lancing (Tennessee) | 423 | 37770 | Morgan | US-TN | |
| Laurel Bloomery (Tennessee) | 423 | 37680 | Johnson | US-TN | |
| Limestone (Tennessee) | 423 | 37681 | Washington | US-TN | |
| Lone Mountain (Tennessee) | 423 | 37773 | Claiborne | US-TN | |
| Lookout Mountain (Tennessee) | 423 | 37350 | Hamilton | US-TN | |
| Lowland (Tennessee) | 423 | 37778 | Hamblen | US-TN | |
| Lupton City (Tennessee) | 423 | 37351 | Hamilton | US-TN | |
| Madisonville (Tennessee) | 423 | 37354 | Monroe | US-TN | |
| Mc Donald (Tennessee) | 423 | 37353 | Bradley | US-TN | |
| Midway (Tennessee) | 423 | 37809 | Greene | US-TN | |
| Milligan College (Tennessee) | 423 | 37682 | Carter | US-TN | |
| Mohawk (Tennessee) | 423 | 37810 | Greene | US-TN | |
| Mooresburg (Tennessee) | 423 | 37811 | Hawkins | US-TN | |
| Morristown (Tennessee) | 423 | 37815 | Hamblen | US-TN | |
| Morristown (Tennessee) | 423 | 37816 | Hamblen | US-TN | |
| Morristown (Tennessee) | 423 | 37814 | Hamblen | US-TN | |
| Mosheim (Tennessee) | 423 | 37818 | Greene | US-TN | |
| Mount Carmel (Tennessee) | 423 | 37645 | Hawkins | US-TN | |
| Mountain City (Tennessee) | 423 | 37683 | Johnson | US-TN | |
| Mountain Home (Tennessee) | 423 | 37684 | Washington | US-TN | |
| New Tazewell (Tennessee) | 423 | 37824 | Claiborne | US-TN | |
| New Tazewell (Tennessee) | 423 | 37825 | Claiborne | US-TN | |
| Newcomb (Tennessee) | 423 | 37819 | Campbell | US-TN | |
| Newport (Tennessee) | 423 | 37822 | Cocke | US-TN | |
| Niota (Tennessee) | 423 | 37826 | McMinn | US-TN | |
| Oakdale (Tennessee) | 423 | 37829 | Morgan | US-TN | |
| Ocoee (Tennessee) | 423 | 37361 | Polk | US-TN | |
| Old Fort (Tennessee) | 423 | 37362 | Polk | US-TN | |
| Oneida (Tennessee) | 423 | 37841 | Scott | US-TN | |
| Ooltewah (Tennessee) | 423 | 37363 | Hamilton | US-TN | |
| Petros (Tennessee) | 423 | 37845 | Morgan | US-TN | |
| Philadelphia (Tennessee) | 423 | 37846 | Loudon | US-TN | |
| Pikeville (Tennessee) | 423 | 37367 | Bledsoe | US-TN | |
| Piney Flats (Tennessee) | 423 | 37686 | Sullivan | US-TN | |
| Piney Flats (Tennessee) | 423 | 37699 | Sullivan | US-TN | |
| Pioneer (Tennessee) | 423 | 37847 | Scott | US-TN | |
| Pruden (Tennessee) | 423 | 37851 | Claiborne | US-TN | |
| Reliance (Tennessee) | 423 | 37369 | Polk | US-TN | |
| Riceville (Tennessee) | 423 | 37370 | McMinn | US-TN | |
| Roan Mountain (Tennessee) | 423 | 37687 | Carter | US-TN | |
| Robbins (Tennessee) | 423 | 37852 | Scott | US-TN | |
| Rogersville (Tennessee) | 423 | 37857 | Hawkins | US-TN | |
| Rugby (Tennessee) | 423 | 37733 | Morgan | US-TN | |
| Russellville (Tennessee) | 423 | 37860 | Hamblen | US-TN | |
| Sale Creek (Tennessee) | 423 | 37373 | Hamilton | US-TN | |
| Sequatchie (Tennessee) | 423 | 37374 | Marion | US-TN | |
| Shady Valley (Tennessee) | 423 | 37688 | Johnson | US-TN | |
| Shawanee (Tennessee) | 423 | 37867 | Claiborne | US-TN | |
| Sneedville (Tennessee) | 423 | 37869 | Hancock | US-TN | |
| Soddy Daisy (Tennessee) | 423 | 37379 | Hamilton | US-TN | |
| Soddy Daisy (Tennessee) | 423 | 37384 | Hamilton | US-TN | |
| South Pittsburg (Tennessee) | 423 | 37380 | Marion | US-TN | |
| Speedwell (Tennessee) | 423 | 37870 | Claiborne | US-TN | |
| Spring City (Tennessee) | 423 | 37381 | Rhea | US-TN | |
| Strawberry Plains (Tennessee) | 423 | 37871 | Jefferson | US-TN | |
| Sunbright (Tennessee) | 423 | 37872 | Morgan | US-TN | |
| Surgoinsville (Tennessee) | 423 | 37873 | Hawkins | US-TN | |
| Tazewell (Tennessee) | 423 | 37879 | Claiborne | US-TN | |
| Telford (Tennessee) | 423 | 37690 | Washington | US-TN | |
| Tellico Plains (Tennessee) | 423 | 37385 | Monroe | US-TN | |
| Ten Mile (Tennessee) | 423 | 37880 | Meigs | US-TN | |
| Thorn Hill (Tennessee) | 423 | 37881 | Grainger | US-TN | |
| Trade (Tennessee) | 423 | 37691 | Johnson | US-TN | |
| Turtletown (Tennessee) | 423 | 37391 | Polk | US-TN | |
| Unicoi (Tennessee) | 423 | 37692 | Unicoi | US-TN | |
| Vonore (Tennessee) | 423 | 37885 | Monroe | US-TN | |
| Wartburg (Tennessee) | 423 | 37887 | Morgan | US-TN | |
| Watauga (Tennessee) | 423 | 37694 | Carter | US-TN | |
| Whitesburg (Tennessee) | 423 | 37891 | Hamblen | US-TN | |
| Whiteside (Tennessee) | 423 | 37396 | Marion | US-TN | |
| Whitwell (Tennessee) | 423 | 37397 | Marion | US-TN | |
| Winfield (Tennessee) | 423 | 37892 | Scott | US-TN |