Districts in the CA area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| CA1 | Carlisle | Cumberland | 4 | 674 |
| CA2 | Carlisle | Cumberland | 4 | 956 |
| CA3 | Carlisle | Cumberland | 3 | 536 |
| CA4 | Wetheral | Cumberland | 3 | 478 |
| CA5 | Dalston | Cumberland | 2 | 353 |
| CA6 | Longtown | Cumberland | 3 | 519 |
| CA7 | Wigton | Cumberland | 9 | 1,227 |
| CA8 | Brampton | Cumberland | 5 | 616 |
| CA9 | Alston | Westmorland and Furness | 1 | 178 |
| CA10 | Shap | Westmorland and Furness | 3 | 692 |
| CA11 | Penrith | Westmorland and Furness | 5 | 1,117 |
| CA12 | Keswick | Cumberland | 3 | 470 |
| CA13 | Cockermouth | Cumberland | 3 | 615 |
| CA14 | Workington | Cumberland | 6 | 1,308 |
| CA15 | Maryport | Cumberland | 4 | 576 |
| CA16 | Appleby-in-Westmorland | Westmorland and Furness | 1 | 267 |
| CA17 | Kirkby Stephen | Westmorland and Furness | 1 | 230 |
| CA18 | Ravenglass | Cumberland | 1 | 25 |
| CA19 | Eskdale Green | Cumberland | 1 | 68 |
| CA20 | Seascale | Cumberland | 1 | 196 |
| CA21 | Beckermet | Cumberland | 1 | 37 |
| CA22 | Egremont | Cumberland | 2 | 268 |
| CA23 | Cleator | Cumberland | 1 | 73 |
| CA24 | Moor Row | Cumberland | 1 | 38 |
| CA25 | Cleator Moor | Cumberland | 1 | 228 |
| CA26 | Frizington | Cumberland | 1 | 116 |
| CA27 | St Bees | Cumberland | 1 | 56 |
| CA28 | Whitehaven | Cumberland | 5 | 969 |
| CA95 | Workington | Cumberland | 1 | 4 |