Post Offices List in Jefferson County, Iowa:
| Batavia Post Office | 1009 3rd St, Batavia, IA 52533 |
| Fairfield Carrier Sta Post Office | 203 S 23rd St, Fairfield, IA 52556 |
| Fairfield Post Office | 200 W Broadway Ave, Fairfield, IA 52556 |
| Libertyville Post Office | 106 N Main St, Libertyville, IA 52567 |
| Lockridge Post Office | 103 S Center St, Lockridge, IA 52635 |
| Packwood Post Office | 204 W 2nd St, Packwood, IA 52580 |