| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 49011 | Athens | Calhoun County | Standard |
| 49028 | Bronson | Branch County | Standard |
| 49030 | Burr Oak | Saint Joseph County | Standard |
| 49036 | Coldwater | Branch County | Standard |
| 49040 | Colon | Saint Joseph County | Standard |
| 49082 | Quincy | Branch County | Standard |
| 49089 | Sherwood | Branch County | Standard |
| 49092 | Tekonsha | Calhoun County | Standard |
| 49094 | Union City | Branch County | Standard |
| 49245 | Homer | Calhoun County | Standard |
| 49252 | Litchfield | Hillsdale County | Standard |
| 49255 | Montgomery | Branch County | Standard |
| 49274 | Reading | Hillsdale County | Standard |