HP - Hemel Hempstead
The postal area HP (Hemel Hempstead) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within HP - Hemel Hempstead
| Country | Post Town | Postal District |
| England | Hemel Hempstead | HP1 HP2 HP3 |
| Berkhamsted | HP4 | |
| Chesham | HP5 | |
| Amersham | HP6 HP7 |
|
| Chalfont St. Giles | HP8 | |
| Beaconsfield | HP9 HP10 |
|
| High Wycombe | HP11 HP12 HP13 HP14 HP15 |
|
| Great Missenden | HP16 | |
| Aylesbury | HP17 HP18 HP19 HP20 HP21 HP22 |
|
| Tring | HP23 |
