Knox County ZIP Codes
Tennessee, United States · 35 codes
Knox County in Tennessee has 35 ZIP codes, from 37721 to 37998, serving 35 places.
ZIP codes in Knox
| ZIP Code | Places |
|---|---|
| 37721 | Corryton |
| 37754 | Heiskell |
| 37806 | Mascot |
| 37849 | Powell |
| 37901 | Knoxville |
| 37902 | Knoxville |
| 37909 | Knoxville |
| 37912 | Knoxville |
| 37914 | Knoxville |
| 37915 | Knoxville |
| 37916 | Knoxville |
| 37917 | Knoxville |
| 37918 | Knoxville |
| 37919 | Knoxville |
| 37920 | Knoxville |
| 37921 | Knoxville |
| 37922 | Knoxville |
| 37923 | Knoxville |
| 37924 | Knoxville |
| 37927 | Knoxville |
| 37928 | Knoxville |
| 37929 | Knoxville |
| 37930 | Knoxville |
| 37931 | Knoxville |
| 37932 | Knoxville |
| 37933 | Knoxville |
| 37934 | Knoxville |
| 37938 | Knoxville |
| 37939 | Knoxville |
| 37940 | Knoxville |
| 37950 | Knoxville |
| 37995 | Knoxville |
| 37996 | Knoxville |
| 37997 | Knoxville |
| 37998 | Knoxville |
Frequently asked questions
What is the ZIP code of Knox?
Knox has 35 ZIP codes, from 37721 to 37998. The table lists the places each one serves.
How many places are listed in Knox County?
35 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.