| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 37601 | Johnson City | Washington County | Standard |
| 37602 | Johnson City | Washington County | PO Box |
| 37604 | Johnson City | Washington County | Standard |
| 37605 | Johnson City | Washington County | PO Box |
| 37614 | Johnson City | Washington County | PO Box |
| 37615 | Johnson City | Washington County | Standard |
| 37640 | Butler | Johnson County | Standard |
| 37641 | Chuckey | Greene County | Standard |
| 37643 | Elizabethton | Carter County | Standard |
| 37644 | Elizabethton | Carter County | PO Box |
| 37650 | Erwin | Unicoi County | Standard |
| 37656 | Fall Branch | Washington County | Standard |
| 37657 | Flag Pond | Unicoi County | Standard |
| 37658 | Hampton | Carter County | Standard |
| 37659 | Jonesborough | Washington County | Standard |
| 37663 | Kingsport | Sullivan County | Standard |
| 37681 | Limestone | Washington County | Standard |
| 37682 | Milligan College | Carter County | PO Box |
| 37684 | Mountain Home | Washington County | PO Box |
| 37687 | Roan Mountain | Carter County | Standard |
| 37690 | Telford | Washington County | Standard |
| 37692 | Unicoi | Unicoi County | Standard |
| 37694 | Watauga | Carter County | Standard |