| Place | Post Code |
|---|---|
| Albury, East of England) | SG11 |
| Allens Green, East of England) | CM21 |
| Amwell Hill, East of England) | SG12 |
| Anstey, East of England) | SG9 |
| Ardeley, East of England) | SG2 |
| Aspenden, East of England) | SG9 |
| Aston, East of England) | SG2 |
| Aston End, East of England) | SG2 |
| Balls Park, East of England) | SG13 |
| Bayford, East of England) | SG13 |
| Bayfordbury, East of England) | SG13 8RJ, SG13 8SP |
| Benington, East of England) | SG2 |
| Birch Green, East of England) | SG14 2LS |
| Postal Codes in Hertfordshire | |
|---|---|
| Broxbourne | |
| Dacorum | |
| East Hertfordshire | |
| Hertsmere | |
| North Hertfordshire | |
| St. Albans | |
| Stevenage | |
| Three Rivers | |
| Watford | |
| Welwyn Hatfield | |