Map
General Information
| Postal Area | Buckinghamshire |
| Postcode | HP1 1NL |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Dacorum |
| Introduction Date | 1990-02-01 |
| Termination Date | 1995-01-01 |
Geographic Information
| Latitude | 51.7526680 |
| Longitude | -0.4730440 |
| Easting | 505500 |
| Northing | 207100 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |