6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 62618 | Beardstown | 7,428 |
| 62691 | Virginia | 2,349 |
| 62612 | Ashland | 1,398 |
| 62611 | Arenzville | 1,047 |
| 62627 | Chandlerville | 1,006 |
| 62622 | Bluff Springs | 100 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Cass County, Illinois (US Census).