12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50219 | Pella | 13,940 |
| 50138 | Knoxville | 12,086 |
| 50225 | Pleasantville | 3,211 |
| 50044 | Bussey | 887 |
| 50062 | Melcher Dallas | 859 |
| 50214 | Otley | 730 |
| 50163 | Melcher Dallas | 663 |
| 50256 | Tracy | 519 |
| 50119 | Harvey | 356 |
| 50057 | Columbia | 244 |
| 50252 | Swan | 244 |
| 50116 | Hamilton | 191 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Marion County, Iowa (US Census).