| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 46714 | Bluffton | Wells County | Standard |
| 46731 | Craigville | Wells County | Standard |
| 46759 | Keystone | Wells County | Standard |
| 46766 | Liberty Center | Wells County | Standard |
| 46770 | Markle | Wells County | Standard |
| 46777 | Ossian | Wells County | Standard |
| 46778 | Petroleum | Wells County | PO Box |
| 46781 | Poneto | Wells County | Standard |
| 46783 | Roanoke | Huntington County | Standard |
| 46791 | Uniondale | Wells County | Standard |
| 46792 | Warren | Huntington County | Standard |
| 46798 | Yoder | Allen County | Standard |
| 46799 | Zanesville | Allen County | PO Box |
| 46952 | Marion | Grant County | Standard |
| 46991 | Van Buren | Grant County | Standard |
| 47348 | Hartford City | Blackford County | Standard |
| 47359 | Montpelier | Blackford County | Standard |