BA
19 districts, 15,518 postcodes
Somerset, Bath and North East Somerset, Wiltshire, Dorset, South Gloucestershire
| District | Postcodes | Local authority |
|---|---|---|
| BA1 | 1,526 | Bath and North East Somerset |
| BA10 | 179 | Somerset |
| BA11 | 1,178 | Somerset |
| BA12 | 1,144 | Wiltshire |
| BA13 | 642 | Wiltshire |
| BA14 | 1,478 | Wiltshire |
| BA15 | 470 | Wiltshire |
| BA16 | 374 | Somerset |
| BA2 | 2,211 | Bath and North East Somerset |
| BA20 | 491 | Somerset |
| BA21 | 773 | Somerset |
| BA22 | 805 | Somerset |
| BA3 | 1,285 | Bath and North East Somerset |
| BA4 | 834 | Somerset |
| BA5 | 786 | Somerset |
| BA6 | 555 | Somerset |
| BA7 | 202 | Somerset |
| BA8 | 212 | Somerset |
| BA9 | 373 | Somerset |