Turtle Creek is a borough in Allegheny County, Pennsylvania, 12 miles (19 km) southeast of Pittsburgh. The population was 5,349 at the 2010 census. George Westinghouse constructed, after colonization, a manufacturing plant nearby. Turtle Creek takes its name from a small stream that flows into the Monongahela River. Before white settlers arrived, there was a small village of Native Americans living there from the Turtle Clan of the Iroquois Nation. (See: East Pittsburgh and Wilmerding.)
Turtle Creek is located at 40°24′29″N 79°49′18″W (40.408018, -79.821802).
According to the United States Census Bureau, the borough has a total area of 1.0 square mile (2.6 km2), all of it land.
Turtle Creek has five borders, including Wilkins Township to the west and north, Monroeville to the east, Wilmerding to the southeast, North Versailles Township to the south, and East Pittsburgh to the southwest.
As of the census of 2000, there were 6,076 people, 2,717 households, and 1,516 families residing in the borough. The population density was 6,205.2 people per square mile (2,393.8/km2). There were 2,969 housing units at an average density of 3,032.1 per square mile (1,169.7/km2).