Gulph Mills, Pennsylvania

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Gulph Mills
Unincorporated community
Gulph Mills is located in Pennsylvania
Gulph Mills
Gulph Mills
Location within the state of Pennsylvania
Coordinates: 40°4′8″N 75°20′24″W / 40.06889°N 75.34000°W / 40.06889; -75.34000Coordinates: 40°4′8″N 75°20′24″W / 40.06889°N 75.34000°W / 40.06889; -75.34000
Country United States
State Pennsylvania
County Montgomery
Township Upper Merion
Elevation 148 ft (45 m)
Time zone Eastern (EST) (UTC-5)
 • Summer (DST) EDT (UTC-4)
ZIP code 19406
Area code(s) 610 and 484
GNIS feature ID 1176308[1]

Gulph Mills is an unincorporated community in Upper Merion Township, Montgomery County, Pennsylvania. It is served by the Upper Merion Area School District. There is a station on the Norristown High Speed Line.

A grist mill built here in 1747 supplied flour to the Continental Army during their stay at Valley Forge. General George Washington's army encamped in the area for a week before departing for winter quarters at Valley Forge. Washington used the area as an ammunition depot during the autumn of 1777.[2] The encampment is marked by a memorial erected by the Sons of the American Revolution in 1892.

Another attraction here is the "Hanging Rock", a major distraction on Pennsylvania Route 320. Hanging Rock reportedly holds importance as a place by which George Washington led his troops. PennDOT has looked to remove Hanging Rock, but preservationists have battled such action since the 1970s.

The Bridge in Upper Merion Township and Hanging Rock are listed on the National Register of Historic Places.[3]


  1. ^ "Gulph Mills". Geographic Names Information System. United States Geological Survey. 
  2. ^ Develin, Dora Harvey (1922). Historic Lower Merion and Blockley. Bala, Lower Merion. p. 31. 
  3. ^ National Park Service (2010-07-09). "National Register Information System". National Register of Historic Places. National Park Service.