Mary D | |
|---|---|
 Main Street in Mary D. | |
  Mary D Location within the state of Pennsylvania  Mary D Mary D (the United States) | |
| Coordinates: 40°45′36″N 76°3′22″W / 40.76000°N 76.05611°W | |
| Country | United States |
| State | Pennsylvania |
| County | Schuylkill |
| Elevation | 906 ft (276 m) |
| Time zone | UTC-5 (Eastern (EST)) |
| • Summer (DST) | UTC-4 (EDT) |
| ZIP codes | 17952 |
| Area code | 570 |
| GNIS feature ID | 1180517[1] |
Mary D is an unincorporated community and coal town in Schuylkill County, Pennsylvania, United States. It is located in Schuylkill Township on U.S. Route 209 and the Schuylkill River forms its natural southeastern boundary.