| Lieu | Code postal |
|---|---|
| Broxbourne, East of England) | EN10 |
| Cheshunt, East of England) | EN7, EN8 |
| Goffs Oak, East of England) | EN7 |
| Hailey, East of England) | SG13 |
| Hoddesdon, East of England) | EN11 |
| Turnford, East of England) | EN10 |
| Waltham Cross, East of England) | EN7, EN8 |
| Wormley, East of England) | EN10 |
| Codes postaux dans Hertfordshire | |
|---|---|
| Broxbourne | |
| Dacorum | |
| East Hertfordshire | |
| Hertsmere | |
| North Hertfordshire | |
| St. Albans | |
| Stevenage | |
| Three Rivers | |
| Watford | |
| Welwyn Hatfield | |