Forest County. Formed April 11, 1848 from Jefferson County. Named for its extensive forests. Part of Venango County was added, 1866, and county seat moved from Marienville to Tionesta. Area notable for its Indian paths, and Zeisberger's mission to the Munsees, 1767-1770.

County Courthouse, Elm St. (U.S. 62), Tionesta, PA, United States