Middlesex Township is a township in Butler County, Pennsylvania, United States. The population was 6,826 at the 2020 census. Middlesex Township is located in south-central Butler County, with Allegheny County to the south. The unincorporated communities of Cooperstown and Glade Mills are near the center of the township along Pennsylvania Route 8…
Middlesex Township is a township in Butler County, Pennsylvania, United States. The population was 6,826 at the 2020 census. Middlesex Township is located in south-central Butler County, with Allegheny County to the south. The unincorporated communities of Cooperstown and Glade Mills are near the center of the township along Pennsylvania Route 8, which crosses the township from north to south.