| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 52601 | Burlington | Des Moines County | Standard |
| 52623 | Danville | Des Moines County | Standard |
| 52637 | Mediapolis | Des Moines County | Standard |
| 52638 | Middletown | Des Moines County | Standard |
| 52640 | Morning Sun | Louisa County | Standard |
| 52644 | Mount Union | Henry County | Standard |
| 52645 | New London | Henry County | Standard |
| 52646 | Oakville | Louisa County | Standard |
| 52650 | Sperry | Des Moines County | Standard |
| 52655 | West Burlington | Des Moines County | Standard |
| 52658 | Wever | Lee County | Standard |
| 52660 | Yarmouth | Des Moines County | Standard |
| 61418 | Biggsville | Henderson County | Standard |
| 61425 | Carman | Henderson County | Standard |
| 61437 | Gladstone | Henderson County | Standard |
| 61442 | Keithsburg | Mercer County | Standard |
| 61453 | Little York | Warren County | Standard |
| 61454 | Lomax | Henderson County | Standard |
| 61460 | Media | Henderson County | Standard |
| 61469 | Oquawka | Henderson County | Standard |
| 61471 | Raritan | Henderson County | PO Box |
| 61476 | Seaton | Henderson County | Standard |
| 61480 | Stronghurst | Henderson County | Standard |
| 62330 | Dallas City | Hancock County | Standard |