AL - St Albans
The postal area AL (St Albans) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within AL - St Albans
| Country | Post Town | Postal District |
| England | St. Albans | AL1 AL2 AL3 AL4 |
| Harpenden | AL5 | |
| Welwyn | AL6 | |
| Welwyn Garden City | AL7 AL8 |
|
| Hatfield | AL9 AL10 |
