| Lieu | Code postal |
|---|---|
| Aldbury, East of England) | HP23 |
| Astrope, East of England) | HP23 |
| Berkhamsted, East of England) | HP4 |
| Bovingdon, East of England) | HP3 |
| Bridens Camp, East of England) | HP2 6EY, HP2 6EY, HP2 … |
| Bulbourne, East of England) | HP23 |
| Chipperfield, East of England) | WD4 |
| Cow Roast, East of England) | HP23 |
| Dudswell, East of England) | HP4 |
| Felden, East of England) | HP3 |
| Flamstead, East of England) | AL3 |
| Flaunden, East of England) | HP3 |
| Frithsden, East of England) | HP1, HP4 |
| Codes postaux dans Hertfordshire | |
|---|---|
| Broxbourne | |
| Dacorum | |
| East Hertfordshire | |
| Hertsmere | |
| North Hertfordshire | |
| St. Albans | |
| Stevenage | |
| Three Rivers | |
| Watford | |
| Welwyn Hatfield | |