CW postcode area
The CW area holds 13 districts and 9,862 live postcodes; its largest place is Crewe.
| District | Live postcodes | Largest place with its centre there |
|---|---|---|
| CW1 | 1,175 | Crewe |
| CW2 | 1,046 | Weston |
| CW3 | 348 | Madeley |
| CW4 | 344 | Holmes Chapel |
| CW5 | 1,010 | Nantwich |
| CW6 | 555 | Kelsall |
| CW7 | 869 | Winsford |
| CW8 | 1,116 | Northwich |
| CW9 | 1,053 | — |
| CW10 | 453 | Middlewich |
| CW11 | 822 | Sandbach |
| CW12 | 1,069 | Congleton |
| CW98 | 2 | — |
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.