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AL4 postcode area · St Albans

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. Every full AL4 postcode falls within one of the neighbourhoods below.

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.

Living here

Typical net household income£50,390a year, weighted avg of neighbourhood estimates
Recorded crime63per 1,000 residents, 12m
Median age (est.)40
Owner-occupied69%

Income: ONS model-based estimates (FYE 2023). Crime: data.police.uk, recorded incidents. Age & tenure: Census 2021. All OGL v3.0 — methodology.

House prices in the AL4 district

£635,000median home sold over the past year · +15.5% over 5 years · -1.6% over the year · 353 sales
Detached£875,000
Semi-detached£745,000
Terraced£495,000
Flat£290,000
St Albans£620,000
East of England£348,000
England£300,000
Annual median price, all homes. Small samples can be volatile.
Area Score:more deprivedless deprivedTap a neighbourhood to open it →
NeighbourhoodNat. rankArea scoreMedian price
Bernards HeathSt Albans 12100 £780,000
LongacresSt Albans 8799 £625,500
MarshalswickSt Albans 27296 £668,525
Jersey Farm & SandridgeSt Albans 39694 £510,000
WheathampsteadSt Albans 70490 £666,250
Knebworth, Codicote & KimptonNorth Hertfordshire 84188 £497,500
Welwyn & Hatfield Garden VillageWelwyn Hatfield 1,39080 £508,500
Colney Heath & Highfield ParkSt Albans 1,78774 £640,000
London ColneySt Albans 2,36366 £458,000
The Camp & CunninghamSt Albans 2,42565 £495,000
Hatfield SouthWelwyn Hatfield 2,99456 £340,500
Welham GreenWelwyn Hatfield 3,11055 £480,000
Shenley & South MimmsHertsmere 3,16554 £580,000

People living in AL4 Census 2021

Residents96,736
Median age (est.)40
Density547per km²
No qualifications12%
Degree or above44%
No car or van12%

Age

0–14 19%15–24 13%25–44 24%45–64 27%65+ 17%

Tenure

Own outright: 34%Mortgage/shared: 36%Social rent: 16%Private rent: 15%
Own outright 34%Mortgage/shared 36%Social rent 16%Private rent 15%

Households

One person: 26%Couple, no children: 15%Couple with children: 33%Lone parent: 10%Other: 16%
One person 26%Couple, no children 15%Couple with children 33%Lone parent 10%Other 16%

Work (top occupations)

Professional 25% · Managers & directors 18% · Associate professional 15%

All occupation groups
Professional25%
Managers & directors18%
Associate professional15%
Administrative9%
Elementary8%
Skilled trades8%
Caring & leisure8%
Sales & customer service6%
Process & plant4%

Ethnic group

White: 82%Asian: 9%Black: 3%Mixed: 4%Other: 2%
White 82%Asian 9%Black 3%Mixed 4%Other 2%

Religion & identity

Christian 47% · No religion 36% · Muslim 5%

Born outside the UK: 19%

Census 2021 (ONS), Crown copyright, OGL v3.0. Shares are of each question's own respondents (e.g. education is % of residents aged 16+). Figures date from March 2021 and change slowly between censuses.

Towns & places in AL4

Places whose neighbourhoods overlap the AL4 district.

Hatfield Welwyn

Nearby areas

Postcode districts around AL4.

AL1 AL10 AL2 AL3 AL9 AL8 AL7 AL5

A postcode district overlaps several neighbourhoods, so per-neighbourhood figures are shown alongside the district-wide medians — neighbouring areas can differ a lot. Neighbourhood (MSOA) boundaries contain ONS data © Crown copyright and database right 2025, Open Government Licence v3.0.