6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 62618 | Beardstown | 7,318 |
| 62691 | Virginia | 2,355 |
| 62612 | Ashland | 1,482 |
| 62611 | Arenzville | 1,114 |
| 62627 | Chandlerville | 1,023 |
| 62622 | Bluff Springs | 90 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Cass County, Illinois (US Census).