AL4 postcode area
The AL4 postcode district spans 13 neighbourhoods (MSOAs) in Hertsmere, North Hertfordshire, St Albans, Welwyn Hatfield. Area Scores range from 53 to 99 across them.
In summary
There is a sharp split within the AL4 district: Bernards Heath scores 100 out of 100 (#12 of 6,856 nationally) while Shenley & South Mimms sits at 54 — neighbours on the map, 46 points apart on the index. 8 of the 13 rank in the least-deprived third of England; none falls in the most-deprived third. House prices stretch as far as the scores do: medians run from £340,500 in Hatfield South to £780,000 in Bernards Heath — a 2.3× gap within the AL4 district. Note that the district straddles 4 local authorities — Hertsmere, North Hertfordshire, St Albans and Welwyn Hatfield — so its neighbourhoods answer to different councils.
| Neighbourhood | Nat. rank | Area score | Median price |
|---|---|---|---|
| Bernards HeathSt Albans | 12 | 100 | £780,000 |
| LongacresSt Albans | 87 | 99 | £625,500 |
| MarshalswickSt Albans | 272 | 96 | £668,525 |
| Jersey Farm & SandridgeSt Albans | 396 | 94 | £510,000 |
| WheathampsteadSt Albans | 704 | 90 | £666,250 |
| Knebworth, Codicote & KimptonNorth Hertfordshire | 841 | 88 | £497,500 |
| Welwyn & Hatfield Garden VillageWelwyn Hatfield | 1,390 | 80 | £508,500 |
| Colney Heath & Highfield ParkSt Albans | 1,787 | 74 | £640,000 |
| London ColneySt Albans | 2,363 | 66 | £458,000 |
| The Camp & CunninghamSt Albans | 2,425 | 65 | £495,000 |
| Hatfield SouthWelwyn Hatfield | 2,994 | 56 | £340,500 |
| Welham GreenWelwyn Hatfield | 3,110 | 55 | £480,000 |
| Shenley & South MimmsHertsmere | 3,165 | 54 | £580,000 |
Nearby areas
Postcode districts around AL4.
A postcode district overlaps several neighbourhoods, so figures are shown per neighbourhood rather than as a single postcode average — neighbouring areas can differ a lot. Neighbourhood (MSOA) boundaries contain ONS data © Crown copyright and database right 2025, Open Government Licence v3.0.