| Locality | Post Code |
|---|---|
| Alvarado, Steuben | 46742 |
| Angola, Steuben | 46703 |
| Berlien, Steuben | 46703 |
| Circle Park, Steuben | 46742 |
| Clarks Landing, Steuben | 46742 |
| Clear Lake, Steuben | 46737 |
| Cold Springs, Steuben | 46742 |
| Crooked Lake, Steuben | 46703 |
| Flint, Steuben | 46703 |
| Forest Park Beach, Steuben | 46742 |
| Fox Lake, Steuben | 46703 |
| Fremont, Steuben | 46737 |
| Glen Eden, Steuben | 46703 |
| Golden Lake, Steuben | 46779 |
| Gravel Beach, Steuben | 46747 |
| Hamilton, Steuben | 46742 |
| Helmer, Steuben | 46747 |
| Hudson, Steuben | 46747 |
| Island Park, Steuben | 46742 |
| Lake James, Steuben | 46703 |
| Long Lake, Steuben | 46737 |
| Metz, Steuben | 46703 |
| Nevada Mills, Steuben | 46703 |
| Oakwood, Steuben | 46742 |
| Oakwood Shores, Steuben | 46742 |
| Orland, Steuben | 46776 |