Connellsville (kŏnˈəlzvĭlˌ) [key], city (1990 pop. 9,229), Fayette co., SW Pa., on the Youghiogheny River in the Allegheny Mts.; settled c.1770, inc. as a borough 1806, as a city 1911. A significant producer of coal and coke, the city also has railroad shops. Its manufactures include machinery, chemicals, and paper products. The attack upon Henry C. Frick by the anarchist Alexander Berkman occurred (1892) in Connellsville during the Homestead strike. A branch of Pennsylvania State Univ. is south of the city.