The AL7 4YY postcode was located in Welwyn Hatfield, Hertfordshire postcode town, within East of England, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1991-09 and terminated on 1995-07.
| Name | Type |
|---|---|
| OA21CD | E00121561 |
| LSOA21CD | E01023940 |
| MSOA21CD | E02004988 |
| MSOA21 | Hollybush |
| Postcode Area | AL7 |
| Ward | Hollybush |
| LTLA22 | Welwyn Hatfield |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.2079120147083634, 51.789388390443264 ] |