New Salem is considered an unincorporated community and CDP found in the Township of Menallen in Fayette County, PA. Before splitting took place, New Salem was initially part of Buffington CDP. According to the census 2010, New Salem had a total population of 579 citizens. This CDP is located on the western side of Fayette County but in the southwest part of Menallen Township.
New Salem is bordered to the west by Buffington, German Township to the south, and 7 miles from Uniontown which is to the southeast. The CDP covers an area measuring 1.2 square miles. The community is served by the 17371 ZIP code.