- Beallsville (21 Companies)
- Bear Creek (10 Companies)
- Bear Creek Township (19 Companies)
- Bear Crk Twp (4 Companies)
- Bear Lake (15 Companies)
- Beaver (1,398 Companies)
- Beaver Falls (1,793 Companies)
- Beaver Meadows (33 Companies)
- Beaver Sprgs (1 Company)
- Beaver Springs (64 Companies)
- Beaverdale (14 Companies)
- Beavertown (50 Companies)
- Beccaria (4 Companies)
- Bechtelsville (224 Companies)
- Bedford (1,013 Companies)
- Bedminster (8 Companies)
- Beech Creek (69 Companies)
- Belle Vernon (1,340 Companies)
- Bellefonte (1,326 Companies)
- Belleville (280 Companies)
- Bellevue (56 Companies)
- Bellwood (103 Companies)
- Belmont Hills (1 Company)
- Belsano (4 Companies)
- Ben Avon (2 Companies)
- Bendersville (4 Companies)
- Benezett (12 Companies)
- Benezette (2 Companies)
- Bensalem (3,124 Companies)
- Bentleyville (316 Companies)
- Benton (144 Companies)
- Berlin (178 Companies)
- Bernville (324 Companies)
- Berrysburg (6 Companies)
- Berwick (1,146 Companies)
- Berwyn (1,029 Companies)
- Bessemer (63 Companies)
- Bethayres (1 Company)
- Bethel (268 Companies)
- Bethel Park (1,486 Companies)
- Bethlehem (9,941 Companies)
- Beyer (2 Companies)
- Big Cove Tannery (13 Companies)
- Big Run (24 Companies)
- Bigler (7 Companies)
- Biglerville (288 Companies)
- Binghamton (1 Company)
- Birchrunville (3 Companies)
- Bird In Hand (201 Companies)
- Birdsboro (728 Companies)
