Charleroi, Pennsylvania

Charleroi is a borough in Washington County, Pennsylvania, United States, on the Monongahela River about 21 miles south of Pittsburgh. It was settled in 1890 and incorporated in 1891, and takes its name from the Belgian city of Charleroi because many early residents were Belgian immigrants, some of them glassmakers. Glass shaped the town: a Pittsburgh Plate Glass factory once employed up to a thousand people, and the borough is home to Corelle Brands, which makes Pyrex. The 2020 census recorded 4,210 residents, a number that has fallen as regional industry declined. The town was once nicknamed Magic City, and in 2015 it renamed itself Pyrex, PA for 100 days to mark the product's hundredth anniversary.