Stahlstown is a small unincorporated community that is located in Cook Township, Westmoreland County, Pennsylvania, United States.

At one time the small village had as many as three gas stations, a general store, a pub, post office, firehouse, and a Nickelodeon movie theater.

In 2007, the festival celebrated its 100th anniversary.According to the Chestnut Ridge Historical Society, a farmhouse just outside Stahlstown was used during World War II by the German American Bund as the headquarters to the largest German spy ring in the eastern United States, with connecting offices in Chicago and New York.

After the war, Hitler planned to build a house in woods of Pennsylvania because of its resemblance to the Black Forest of southwest Germany.

During the second week of July the Chestnut Ridge Community Volunteer Fire Company hosts a week-long fair complete with amusement rides, entertainment, a parade and a Saturday evening display of Zambelli Fireworks.