| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Bebside | NE24 4HX |
| Postal/ZIP Codes in Bedlington | NE22 |
| Postal/ZIP Codes in Belford | NE70 |
| Postal/ZIP Codes in Bellingham | NE48 |
| Postal/ZIP Codes in Bellshill | NE70 |
| Postal/ZIP Codes in Belsay | NE20 |
| Postal/ZIP Codes in Berwick Hill | NE20 |
| Postal/ZIP Codes in Berwick-Upon-Tweed | TD15 |
| Postal/ZIP Codes in Biddlestone | NE65 |
| Postal/ZIP Codes in Bilton | NE66 |
| Postal/ZIP Codes in Bingfield | NE19, NE46 |
| Postal/ZIP Codes in Birling | NE65 0XS |
| Postal/ZIP Codes in Birtley | NE48 |
| Postal/ZIP Codes in Black Heddon | NE20 |
| Postal/ZIP Codes in Blyth | NE24 |
| Postal/ZIP Codes in Blyth Riverside Business Park | NE24 |
| Postal/ZIP Codes in Bolam | NE61 3UA |
| Postal/ZIP Codes in Bolton | NE66 |
| Postal/ZIP Codes in Bothal | NE61 |
| Postal/ZIP Codes in Boulmer | NE66 |
| Postal/ZIP Codes in Bowsden | TD15 |
| Postal/ZIP Codes in Branton | NE66 |
| Postal/ZIP Codes in Branxton | TD12 |
| Postal/ZIP Codes in Broadoaks | NE22 |
| Postal/ZIP Codes in Broomhaugh | NE44 |
| Postal/ZIP Codes in Broomley | NE43 |