Crime Scene and Trauma Cleanup in Rennerdale, PA

Rennerdale is an unincorporated community and census-designated place in Collier Township, Allegheny County, about nine miles southwest of Pittsburgh; as an unincorporated place it has no mayor or police force of its own.

Rennerdale had a population of 1,103 people at the 2020 census - about 483 households - down slightly from 1,150 in 2010, on roughly 0.8 square miles of hillside sloping down toward Robinson's Run creek.

Rennerdale grew up as a railroad suburb: the 1910 census counted just 72 people on Sunnyside Avenue, and 11 of the 21 heads of households there were railroad clerks.

Coal was mined in the hills around Rennerdale from as early as 1870, and the Walker-Ewing Log House, built around 1790, survives as a pioneer-era landmark of the area.

The Panhandle Trail, a 29-mile rail trail running from Walkers Mill to Weirton, West Virginia, passes through Rennerdale and forms part of the cross-country Great American Rail-Trail.

A former Cold War Nike missile site on Rennerdale's western ridge later became the Army's Charles E. Kelly Support Facility, and the $4.5 million Collier Township Community Center opened on the redeveloped site in 2015.

Rennerdale belongs to the Chartiers Valley School District, and its township, Collier Township, was created on June 7, 1875, and named for county judge Frederick H. Collier; the township had 8,935 residents in 2020.