CA
29 districts, 12,874 postcodes
Cumberland, Westmorland and Furness, Northumberland
| District | Postcodes | Local authority |
|---|---|---|
| CA1 | 674 | Cumberland |
| CA10 | 692 | Westmorland and Furness |
| CA11 | 1,114 | Westmorland and Furness |
| CA12 | 469 | Cumberland |
| CA13 | 614 | Cumberland |
| CA14 | 1,307 | Cumberland |
| CA15 | 576 | Cumberland |
| CA16 | 267 | Westmorland and Furness |
| CA17 | 230 | Westmorland and Furness |
| CA18 | 25 | Cumberland |
| CA19 | 68 | Cumberland |
| CA2 | 954 | Cumberland |
| CA20 | 196 | Cumberland |
| CA21 | 37 | Cumberland |
| CA22 | 267 | Cumberland |
| CA23 | 73 | Cumberland |
| CA24 | 38 | Cumberland |
| CA25 | 227 | Cumberland |
| CA26 | 116 | Cumberland |
| CA27 | 56 | Cumberland |
| CA28 | 966 | Cumberland |
| CA3 | 535 | Cumberland |
| CA4 | 477 | Cumberland |
| CA5 | 354 | Cumberland |
| CA6 | 518 | Cumberland |
| CA7 | 1,227 | Cumberland |
| CA8 | 616 | Cumberland |
| CA9 | 177 | Westmorland and Furness |
| CA95 | 4 | Cumberland |