| Country | England |
|---|---|
| UK region | North West |
| Postcode area | CA |
| District | Allerdale |
St John's Castlerigg and Wythburn postcode districts
St John's Castlerigg and Wythburn has 1 postcode district
St John's Castlerigg and Wythburn postcode sectors
St John's Castlerigg and Wythburn has 1 postcode sector