Mertztown is an unincorporated community (Class Code U6) in Longswamp Township in eastern Berks County, Pennsylvania, United States. Its zip code is 19539. Mertztown is located in Berks County at latitude 40.506 and longitude -75.665 (Mertztown Panoramio Photos.) and its elevation is 466 feet. It appears on the Topton U.S. Geological Survey Map and is in the Eastern time zone (GMT -5).
The former Reading Railroad runs through the center of Mertztown, is used by Norfolk Southern, and it is a heavily used railroad branch. The Catasauqua and Fogelsville Railroad used to go through the Farmington and Klines Corner section of Mertztown but the tracks were torn up years ago.
Mertztown was founded in 1823 by Robert Mertz. The population density is .01% Black, .01% Hispanic or other, and 99.8% white. Atlas Minerals, a big mineral company, is located in Mertztown, moved to the town in 1917, and has been there ever since. The town is down to one Grocery Store, Radcliff's Great Value, and two Hardware stores, True Value and the Menonite Hardware store.