The HP1 1LL 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 1994-05 and terminated on 1997-06.
| 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 | [ -0.47244430497175227, 51.75670619769939 ] |