12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 47591 | Vincennes | 25,191 |
| 47512 | Bicknell | 4,216 |
| 47557 | Monroe City | 1,360 |
| 47561 | Oaktown | 1,293 |
| 47516 | Bruceville | 943 |
| 47597 | Wheatland | 849 |
| 47535 | Freelandville | 776 |
| 47528 | Edwardsport | 514 |
| 47578 | Sandborn | 512 |
| 47524 | Decker | 486 |
| 47596 | Westphalia | 81 |
| 47573 | Ragsdale | 18 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Knox County, Indiana (US Census).