Barrios de Pennsylvania B
- Bala Cynwyd (29)
- Banksville (5)
- Bath Historic District (6)
- Bayfront (6)
- Beechview (17)
- Bell Acres/Leetsdale (3)
- Bella Vista-Southwark (117)
- Belmont (22)
- Bethany (1)
- Biery's Port Historic District (2)
- Birch Valley (1)
- Bloomfield (35)
- Blue Ridge (1)
- Bon Air (1)
- Braddock Hills-Forest Hills (8)
- Brentwood-Baldwin (4)
- Brewerytown (68)
- Bridesburg (7)
- Brighton Heights (16)
- Bryn Mawr (7)
- Buck/Peach Bottom/Quaryvle/Christiana (4)
- Bunker Hill (1)
- Burton-Diehl (1)