The AL4 0QX 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 1993-01 and terminated on 1994-05.
| Name | Type |
|---|---|
| OA21CD | E00190346 |
| LSOA21CD | E01035608 |
| MSOA21CD | E02007092 |
| MSOA21 | Welham Green |
| Postcode Area | AL4 |
| Ward | Welham Green and Hatfield South |
| LTLA22 | Welwyn Hatfield |
| UTLA22 | Hertfordshire |
| Region | East of England |
| Country | England |
| Co-ordinates | [ -0.24619621959975072, 51.736912708603946 ] |