The HP1 3AJ 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 1980-01 and terminated on 1995-01.
| Name | Type |
|---|---|
| OA21CD | E00118869 |
| LSOA21CD | E01023399 |
| MSOA21CD | E02004865 |
| MSOA21 | Gadebridge & Old Town |
| Postcode Area | HP1 |
| Ward | Hemel Hempstead Town |
| LTLA22 | Dacorum |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.47283194693286773, 51.75895918711232 ] |