| Locality | Postal Code |
|---|---|
| Bewholme | YO25 |
| Bielby | YO42 |
| Bilton | HU11 |
| Bishop Burton | HU17 |
| Bishop Wilton | YO42 |
| Blacktoft | DN14 |
| Bolton | YO41 |
| Boothferry | DN14 7EE, DN14 7EF |
| Boynton | YO16 |
| Brandesburton | YO25 |
| Brantingham | HU15 |
| Breighton | YO8 |
| Bridlington | YO15, YO16 |
| Brigham | YO25 |
| Brind | DN14 |
| Broadgate | HU17 8RJ, HU17 8RW |
| Broomfleet | HU15 |
| Brough | HU15 |
| Bubwith | YO8 |
| Buckton | YO15, YO16 |
| Bugthorpe | YO41 |
| Burland | DN14 7LX, DN14 7LX, DN14 … |
| Burnby | YO42 |
| Burstwick | HU12 |
| Burton Agnes | YO25 |
| Burton Constable | HU11 |