8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 37660 | Kingsport | 40,996 |
| 37620 | Bristol | 38,494 |
| 37664 | Kingsport | 28,267 |
| 37617 | Blountville | 14,744 |
| 37663 | Kingsport | 14,230 |
| 37618 | Bluff City | 12,548 |
| 37686 | Piney Flats | 9,495 |
| 37665 | Kingsport | 4,741 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Sullivan County, Tennessee (US Census).