Post Offices List in Adams County, Indiana:
| Berne Post Office | 215 W Main St, Berne, IN 46711 |
| Decatur Post Office | 213 Court St, Decatur, IN 46733 |
| Geneva Post Office | 414 E Line St, Geneva, IN 46740 |
| Monroe Post Office | 113 E Washington St, Monroe, IN 46772 |
| Pleasant Mills Post Office | 1995 N State Road 101, Pleasant Mills, IN 46780 |
| Preble Post Office | 3990 W Us Highway 224 Unit A, Preble, IN 46782 |
| Linn Grove Post Office | 5055 W 700 S, Linn Grove, IN 46769 |