Place
- Pennsylvania--Manheim1
- Pennsylvania--Marcus Hook1
- Pennsylvania--Mayfield1
- Pennsylvania--McAdoo1
- Pennsylvania--Meadville1
- Pennsylvania--Media1
- Pennsylvania--Mercer County4
- Pennsylvania--Middleport1
- Pennsylvania--Miles Grove1
- Pennsylvania--Milford1
- Pennsylvania--Millersville1
- Pennsylvania--Mohnton1
- Pennsylvania--Monroe County1
- Pennsylvania--Montgomery1
- Pennsylvania--Montoursville1
- Pennsylvania--Mount Bethel1
- Pennsylvania--Mount Joy1
- Pennsylvania--Mountville1
- Pennsylvania--Nanticoke1
- Pennsylvania--Natrona1