| Middletown Valley | |
|---|---|
| Catoctin Valley | |
 | |
  Middletown Valley Location of the valley in Maryland | |
| Floor elevation | 479 ft (146 m)[1] |
| Length | 14 miles (23 km) North-South |
| Width | 7 miles (11 km) |
| Geography | |
| Location | Frederick County, Maryland |
| Population centers | Middletown Brunswick |
| Borders on | South Mountain (west) Catoctin Mountain (east) Potomac River (south) South Mountain/Catoctin Mountain convergence (north) |
| Coordinates | 39°26′N 77°32′W / 39.43°N 77.53°W |
| Traversed by | Interstate 70, U.S. Route 40, U.S. Route 340 |
The Middletown Valley, also historically known as Catoctin Valley, is a valley in western Frederick County in the state of Maryland.