12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50219 | Pella | 14,267 |
| 50138 | Knoxville | 11,374 |
| 50225 | Pleasantville | 3,396 |
| 50044 | Bussey | 948 |
| 50062 | Melcher Dallas | 833 |
| 50214 | Otley | 684 |
| 50163 | Melcher Dallas | 669 |
| 50256 | Tracy | 620 |
| 50119 | Harvey | 352 |
| 50057 | Columbia | 261 |
| 50252 | Swan | 221 |
| 50116 | Hamilton | 185 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Marion County, Iowa (US Census).