Map
General Information
| Postal Area | Wirral |
| Postcode | CH1 1DA |
| User Type | Small (less than 25 items of mail per day) |
| Region | North West |
| Country | England |
| Local authority | Cheshire West and Chester |
| Introduction Date | 1980-01-01 |
Geographic Information
| Latitude | 53.1898500 |
| Longitude | -2.8880910 |
| Easting | 340758 |
| Northing | 366229 |
| Quality | Within the building of the matched address closest to the postcode mean |