Post Offices List in Sullivan County, Indiana:
| Carlisle Post Office | 119 N Ledgerwood St, Carlisle, IN 47838 |
| Fairbanks Post Office | 9236 N Main St, Fairbanks, IN 47849 |
| Farmersburg Post Office | 105 W Main St, Farmersburg, IN 47850 |
| Graysville Post Office | 2269 N State Road 63, Graysville, IN 47852 |
| Hymera Post Office | 119 S Main St, Hymera, IN 47855 |
| Merom Post Office | 2066 S 3rd St, Merom, IN 47861 |
| Shelburn Post Office | 13 N Railroad St, Shelburn, IN 47879 |
| Sullivan Post Office | 103 E Washington St, Sullivan, IN 47882 |