6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 62047 | Hardin | 1,760 |
| 62036 | Golden Eagle | 548 |
| 62013 | Brussels | 527 |
| 62045 | Hamburg | 520 |
| 62006 | Batchtown | 485 |
| 62053 | Kampsville | 332 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Calhoun County, Illinois (US Census).