The HP4 3SD 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 1995-07 and terminated on 1997-06.
| Name | Type |
|---|---|
| OA21CD | E00118957 |
| LSOA21CD | E01023417 |
| MSOA21CD | E02004861 |
| MSOA21 | Northchurch & Potten End |
| Postcode Area | HP4 |
| Ward | Northchurch |
| LTLA22 | Dacorum |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.5974380137282602, 51.77217419007461 ] |