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Gulph Mills, Pennsylvania

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.

Gulph Mills
Gulph Mills is located in Pennsylvania
Gulph Mills
Gulph Mills
Location within the U.S. state of Pennsylvania
Gulph Mills is located in the US
Gulph Mills
Gulph Mills
Gulph Mills (the US)
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
CountryUnited States
TownshipUpper Merion
148 ft (45 m)
Time zoneUTC-5 (Eastern (EST))
 • Summer (DST)UTC-4 (EDT)
ZIP code
Area code(s)610 and 484
GNIS feature ID1176308[1]

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 1893.

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.