Hillside is an unincorporated community in Derry Township, Westmoreland County, Pennsylvania, United States.

[1] The community is located along Pennsylvania Route 217 3.5 miles (5.6 km) northwest of Derry.

Hillside is located in Derry Township in northeastern Westmoreland County 40°22′05″N 79°15′38″W / 40.36806°N 79.26056°W / 40.36806; -79.26056 (40.368056, -79.260556).

It lies on the west side of Chestnut Ridge.

This Westmoreland County, Pennsylvania state location article is a stub.