Jacob Hershey built the first mill here in about 1803. The mill remained in the Hershey family until the mill closed in 1930.
The mill had what was claimed to be the largest internal overshot wheel in the nation, measuring 20 feet in diameter and 3 and a half feet wide. It had 96 buckets around its perimeter. The wheel was donated to the Philadelphia Museum. Today, the mill stands empty.
The mill is located at 363 Hershey Mill Road, Mountville, PA.
| Built | c1814 |
| Structure | 3.5 Story Stone |
| Dimensions | 40 x 40 |
| Water Source | W. Branch of the Little Conestoga |
| Township | Manor |
| Type | Flour/Grist/Saw/Cider |
| Headrace | 500 feet |
| Tailrace | 500 feet |
| Dam Height | 12 feet |
| Power | 1 Overshot |
| Capacity | 35 bbl / day |
