Rennerdale is an unincorporated community and census-designated place in Collier Township, Allegheny County, Pennsylvania, United States, about 9 miles (14 km) southwest of Pittsburgh.

[3] The surrounding area was mined for coal from as early as 1870,[5] but the only currently active extraction enterprise is a quarry east of the town.

An early settler of this region was James Ewing, who arrived in 1770 and built a grist mill on Robinson's Run.

An 1876 atlas of Pittsburgh shows only these families residing on the land where Rennerdale is now located: Mrs. J. Maloney, James Hayes, J.E.

[10][11][12] The 1910 census does not list Rennerdale as part of Collier Township, but 72 persons are counted on Sunnyside Avenue.

The Rennerdale Volunteer Fire Department, located at 30 Suburban Avenue,[17] provides emergency and firefighting services.

Next to the fire station is a small spring-fed pond, where there is some recreational fishing (with a traditional catch and release policy).

Rock the Quarry is held each August, when local bands take the stage vendors offer a variety of food, drinks and goods.

The Panhandle Trail currently runs 29 miles (47 km) from Walker's Mills, Collier Township, to just outside Weirton, West Virginia.

Atop the ridge south of Rennerdale is a private, Jack Nicklaus-designed golf course, The Club at Nevillewood, with a surrounding community.

Atop the western ridge is a former Project Nike missile site, known as the Charles E. Kelly Support Facility, which provided headquarters for the Army's 99th Regional Readiness Command (RRC).

[20] In 2008, the Kelly Center Local Redevelopment Authority (KCLRA) oversaw the development of a re-use plan for the base.