| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 52533 | Batavia | Jefferson County | Standard |
| 52535 | Birmingham | Van Buren County | Standard |
| 52540 | Brighton | Jefferson County | Standard |
| 52554 | Eldon | Wapello County | Standard |
| 52556 | Fairfield | Jefferson County | Standard |
| 52557 | Fairfield | Jefferson County | Unique |
| 52563 | Hedrick | Keokuk County | Standard |
| 52567 | Libertyville | Jefferson County | Standard |
| 52580 | Packwood | Jefferson County | Standard |
| 52585 | Richland | Keokuk County | Standard |
| 52635 | Lockridge | Jefferson County | Standard |
| 52641 | Mount Pleasant | Henry County | Standard |
| 52651 | Stockport | Van Buren County | Standard |