The HP1 3SY postcode was located in Dacorum, Hertfordshire postcode town, within East of England, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1991-01 and terminated on 1994-05.
| Name | Type |
|---|---|
| OA21CD | E00119013 |
| LSOA21CD | E01023427 |
| MSOA21CD | E02004866 |
| MSOA21 | Warners End |
| Postcode Area | HP1 |
| Ward | Chaulden and Warners End |
| LTLA22 | Dacorum |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.49597550447954714, 51.76015676765534 ] |