The HP1 1AY postcode was located in Dacorum, Hertfordshire postcode town, within East of England, England region.
It is now a terminated postcode, it was a Small User postcode introduced in 2011-03 and terminated on 2020-10.
| Name | Type |
|---|---|
| OA21CD | E00189423 |
| LSOA21CD | E01035564 |
| MSOA21CD | E02004870 |
| MSOA21 | Hemel Hempstead Town |
| Postcode Area | HP1 |
| Ward | Boxmoor |
| LTLA22 | Dacorum |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.4750472312069086, 51.746102676314976 ] |