Mercer County Courthouse is an historic county courthouse located at Mercer, Mercer County, Pennsylvania. It was designed by the noted Youngstown architectural firm of Owsley & Boucherle and built in 1910-1911. It is a three-story, rectangular red brick and light sandstone building in the Beaux-Arts style It measures 180 feet wide and 92 feet deep. It features a tall bell and clock tower. Also on the property are the contributing resources: the Mercer County Soldiers' Monument and old Mercer County Jail, or South Court House Annex.It was added to the National Register of Historic Places in 1998.
