About the town » Pitcairn, Allegheny County, Pennsylvania, United States

Pitcairn is a borough in Allegheny County, Pennsylvania, 15 miles east of Pittsburgh. Early in the 20th century, it was the site of large railroad yards and shops that employed nearly ten thousand men. The population increased from 2,601 in 1900 to 6,310 in 1940, but has since declined. The population was 3,689 at the 2010 census.