The HP4 1AS 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 2009-10 and terminated on 2015-12.
| Name | Type |
|---|---|
| OA21CD | E00189326 |
| LSOA21CD | E01023345 |
| MSOA21CD | E02004868 |
| MSOA21 | Maylands & Adeyfield |
| Postcode Area | HP4 |
| Ward | Adeyfield East |
| LTLA22 | Dacorum |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.4385548093495666, 51.76006444349607 ] |