New Salem is an unincorporated community and census-designated place located in Menallen Township, Fayette County, Pennsylvania, United States.

It was formerly part of the New Salem-Buffington CDP, before it was split into two separate CDPs for the 2010 census.

[3] New Salem is located in western Fayette County, in the southwestern part of Menallen Township.

It is bordered to the west by Buffington and to the south, across Dunlap Creek, by German Township.

According to the U.S. Census Bureau, the New Salem CDP has an area of 1.2 square miles (3.0 km2), all land.