Post Offices List in Washington County, Indiana:
| Campbellsburg Post Office | 55 W Oak St, Campbellsburg, IN 47108 |
| Fredericksburg Post Office | 262 E Us Highway 150, Fredericksburg, IN 47120 |
| Hardinsburg Post Office | 52 E Us Highway 150, Hardinsburg, IN 47125 |
| Pekin Post Office | 31 E Main St, Pekin, IN 47165 |
| Salem Post Office | 118 E Walnut St, Salem, IN 47167 |