Zip Codes in Portland, Iowa
| Zip Code | Population | Zip Code | Population | Zip Code | Population | Zip Code | Population |
|---|---|---|---|---|---|---|---|
| 31 | 4 |
| Zip Code | Population |
|---|---|
| 31 | |
| 4 |
© 2025
| Zip Code | Population | Zip Code | Population | Zip Code | Population | Zip Code | Population |
|---|---|---|---|---|---|---|---|
| 31 | 4 |
| Zip Code | Population |
|---|---|
| 31 | |
| 4 |