12 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 47591 | Vincennes | 25,168 |
| 47512 | Bicknell | 4,243 |
| 47561 | Oaktown | 1,442 |
| 47557 | Monroe City | 1,345 |
| 47516 | Bruceville | 988 |
| 47535 | Freelandville | 807 |
| 47597 | Wheatland | 745 |
| 47578 | Sandborn | 566 |
| 47528 | Edwardsport | 457 |
| 47524 | Decker | 302 |
| 47596 | Westphalia | 94 |
| 47573 | Ragsdale | 20 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Knox County, Indiana (US Census).