| Post Office | Oshkosh |
| Division | Winnebago |
| Pincode | 54901 |
| Post Office | Oshkosh |
| Division | Winnebago |
| Pincode | 54904 |
| Post Office | Oshkosh |
| Division | Winnebago |
| Pincode | 54902 |
| Post Office | Oshkosh |
| Division | Winnebago |
| Pincode | 54903 |
| Post Office | Oshkosh |
| Division | Winnebago |
| Pincode | 54906 |