Post Offices List in Janesville City, Wisconsin:
| Janesville Post Office | 1818 Milton Ave Ste 100, Janesville, WI 53545 |
| Downtown Janesville Post Office | 20 S Main St Ste 18, Janesville, WI 53545 |
| Janesville Post Office | 1818 Milton Ave Ste 100, Janesville, WI 53545 |
| Downtown Janesville Post Office | 20 S Main St Ste 18, Janesville, WI 53545 |