ZIP Data and Maps
- Blog
- About
- Data and Maps US ZIP Codes ZIP Code Tools Canada Postal Codes Area Codes Politics POI Data Regional Market Areas Neighborhoods Economics Counties Places Schools Time Zones
- Home
- Area Codes
- Tennessee Area Codes
- Area Code 423
Area Code 423 Map and Data
Area Code 423 Profile
| Area Code | 423 |
| State | Tennessee |
| Current Time in Area Code 423 | 423> EST |
| Timezone | Eastern Standard Time |
| Regional Market Area | Knoxville AreaMetro ChattanoogaTri-Cities Region |
| Metro Area(s) | Athens, TNChattanooga, TN-GACleveland, TNDayton, TNGreeneville, TNJohnson City, TNMorristown, TNNewport, TN |
| Population (2020) | 1428730 |
| AdjacentArea Codes | 256,276,336,606,706,743,762,828,865,931,938 |
Area Code 423 Boundary Map
List of ZIP Codes in Area Code 423
| 37302 |
| 37303 |
| 37304 |
| 37307 |
| 37308 |
| 37309 |
| 37310 |
| 37311 |
| 37312 |
| 37314 |
| 37315 |
| 37316 |
| 37317 |
| 37320 |
| 37321 |
| 37322 |
| 37323 |
| 37325 |
| 37326 |
| 37327 |
| 37329 |
| 37331 |
| 37332 |
| 37333 |
| 37336 |
| 37337 |
| 37338 |
| 37340 |
| 37341 |
| 37343 |
| 37347 |
| 37350 |
| 37351 |
| 37353 |
| 37354 |
| 37361 |
| 37362 |
| 37363 |
| 37364 |
| 37367 |
| 37369 |
| 37370 |
| 37371 |
| 37373 |
| 37374 |
| 37377 |
| 37379 |
| 37380 |
| 37381 |
| 37384 |
| 37385 |
| 37391 |
| 37396 |
| 37397 |
| 37401 |
| 37402 |
| 37403 |
| 37404 |
| 37405 |
| 37406 |
| 37407 |
| 37408 |
| 37409 |
| 37410 |
| 37411 |
| 37412 |
| 37414 |
| 37415 |
| 37416 |
| 37419 |
| 37421 |
| 37422 |
| 37424 |
| 37450 |
| 37601 |
| 37602 |
| 37604 |
| 37605 |
| 37614 |
| 37615 |
| 37616 |
| 37617 |
| 37618 |
| 37620 |
| 37625 |
| 37640 |
| 37641 |
| 37642 |
| 37643 |
| 37644 |
| 37645 |
| 37650 |
| 37656 |
| 37657 |
| 37658 |
| 37659 |
| 37660 |
| 37662 |
| 37663 |
| 37664 |
| 37665 |
| 37669 |
| 37680 |
| 37681 |
| 37682 |
| 37683 |
| 37684 |
| 37686 |
| 37687 |
| 37688 |
| 37690 |
| 37691 |
| 37692 |
| 37694 |
| 37699 |
| 37707 |
| 37710 |
| 37711 |
| 37713 |
| 37714 |
| 37715 |
| 37722 |
| 37724 |
| 37726 |
| 37727 |
| 37729 |
| 37730 |
| 37731 |
| 37732 |
| 37733 |
| 37743 |
| 37744 |
| 37745 |
| 37752 |
| 37753 |
| 37755 |
| 37756 |
| 37757 |
| 37762 |
| 37765 |
| 37766 |
| 37770 |
| 37773 |
| 37778 |
| 37809 |
| 37810 |
| 37811 |
| 37813 |
| 37814 |
| 37815 |
| 37816 |
| 37818 |
| 37819 |
| 37821 |
| 37822 |
| 37824 |
| 37825 |
| 37826 |
| 37829 |
| 37841 |
| 37843 |
| 37845 |
| 37847 |
| 37851 |
| 37852 |
| 37857 |
| 37860 |
| 37867 |
| 37869 |
| 37870 |
| 37872 |
| 37873 |
| 37874 |
| 37877 |
| 37879 |
| 37880 |
| 37885 |
| 37887 |
| 37891 |
| 37892 |
List of Counties in Area Code 423
| Bledsoe County |
| Bradley County |
| Campbell County |
| Carter County |
| Claiborne County |
| Cocke County |
| Greene County |
| Hamblen County |
| Hamilton County |
| Hancock County |
| Hawkins County |
| Johnson County |
| Marion County |
| Mcminn County |
| Meigs County |
| Monroe County |
| Morgan County |
| Polk County |
| Rhea County |
| Scott County |
| Sequatchie County |
| Sullivan County |
| Unicoi County |
| Washington County |
List of Major Cities/Towns in Area Code 423
| Chattanooga |
| Cleveland |
| Johnson City |
| Kingsport |
Related Maps and Data:
- Majority Race/Ethnicity for Counties in Tennessee
- Partisan Voting Index for Counties in Tennessee
- Poorest ZIP Codes in Tennessee
- Population Change for Counties in Tennessee
- Public School Majority Race/Ethnicity for Counties in Tennessee
- SNAP/Food Stamp Participation for Counties in Tennessee
- Tennessee Airports
- Tennessee Area Codes
- Tennessee Colleges and Universities
- Tennessee Congressional Districts Map
- Tennessee Metropolitan/Micropolitan Statistical Areas
- Tennessee Military Bases
- Tennessee Power Plants
- Tennessee Regional Market Areas
- Tennessee School Districts
- Tennessee State House of Representatives Map
- Tennessee State Senate Map
- Tennessee ZIP Code List
- Tennessee ZIP Code Map
- Unemployment Rate Heat Map for Cities and Counties in Tennessee
- Unemployment Rate for Counties in Tennessee
- Wealthiest ZIP Codes in Tennessee
';
- About
- Contact
- Terms
- Privacy
- ZIP Code Blog
- Twitter
- Facebook
2025 zipdatamaps.com
- About
- Contact
- Terms
- Privacy
- ZIP Code Blog
- Twitter
- Facebook
2025 zipdatamaps.com