Pennsylvania Neighborhoods M
- Main Line-Delaware (11)
- Main Line-Montgomery (1)
- Manayunk (82)
- Manchester (13)
- Manheim/Lititz (16)
- Mantua (64)
- Market Square (9)
- Marshall-Shadeland (7)
- Marvintown (4)
- Mayfair (4)
- McKees Rocks (18)
- McKeesport-White Oak (15)
- Mechanicsville (1)
- Mid City Erie (2)
- Midtown Harrisburg (13)
- Midtown Village (107)
- Millbourne (1)
- Millersville/Conestoga/Willow St (4)
- Monroeville (24)
- Morningside (7)
- Mount Lebanon (22)
- Mount Washington (22)
- Mt Oliver Boro (8)
- Munhall (10)
- Musser Park (7)
- Mussertown (4)