AL4 9SJ maps, stats, and open data
AL4 9SJ lies on Windmill Avenue in St. Albans. AL4 9SJ is located in the Marshalswick East & Jersey Farm electoral ward, within the local authority district of St Albans and the English Parliamentary constituency of St Albans. The Sub Integrated Care Board (ICB) Location is NHS Hertfordshire and West Essex ICB - 06N and the police force is Hertfordshire. This postcode has been in use since January 1980.
AL4 9SJ maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
AL4 9SJ geodata
| Easting | 517276 |
| Northing | 209319 |
| Latitude | 51.770271 |
| Longitude | -0.301776 |
Where is AL4 9SJ?
| Street | Windmill Avenue |
| Town/City | St. Albans |
| Country | England |
| Postcode District | AL4 |
AL4 9SJ Elevation
Elevation or altitude of AL4 9SJ as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 90m | 295ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.
Politics
| Ward | Marshalswick East & Jersey Farm |
|---|---|
| Constituency | St Albans |
House Prices
Sales of detached houses in AL4 9SJ
2024 15 NOV £1,025,000 |
2024 5 NOV £950,000 |
2017 8 JUN £620,000 |
79, WINDMILL AVENUE, ST ALBANS, AL4 9SJ 2017 6 JAN £665,000 |
87, WINDMILL AVENUE, ST ALBANS, AL4 9SJ 2015 2 APR £535,000 |
2006 27 JUN £379,995 |
2004 9 SEP £150,000 |
81, WINDMILL AVENUE, ST. ALBANS, AL4 9SJ 1999 6 SEP £200,000 |
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Transport
Nearest bus stops to AL4 9SJ
| Sherwood Avenue (The Ridgeway) | Marshalswick | 56m |
| Sherwood Avenue (The Ridgeway) | Marshalswick | 65m |
| Chandlers Road (The Ridgeway) | Marshalswick | 243m |
| Quantock Close (Chiltern Road) | Marshalswick | 256m |
| Quantock Close (Chiltern Road) | Marshalswick | 269m |
Nearest railway stations to AL4 9SJ
| St Albans City Station | 2.8km |
| St Albans Abbey Station | 4km |
| Harpenden Station | 6km |
Broadband
Broadband access in AL4 9SJ (2020 data)
| Percentage of properties with Next Generation Access | 100.0% |
| Percentage of properties with Superfast Broadband | 100.0% |
| Percentage of properties with Ultrafast Broadband | 100.0% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in AL4 9SJ (2019 data)
Download
| Median download speed | 77.6Mbps |
| Average download speed | 99.1Mbps |
| Maximum download speed | 350.00Mbps |
Upload
| Median upload speed | 19.5Mbps |
| Average upload speed | 16.2Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in AL4 9SJ (2020 data)
| Percentage of properties unable to receive 2Mbps | 0.0% |
| Percentage of properties unable to receive 5Mbps | 0.0% |
| Percentage of properties unable to receive 10Mbps | 0.0% |
| Percentage of properties unable to receive 30Mbps | 0.0% |
AL4 9SJ gas and electricity consumption
Estimated total energy consumption in AL4 9SJ by fuel type, 2015.
Gas
| Consumption (kWh) | 456,348 |
|---|---|
| Meter count | 31 |
| Mean (kWh/meter) | 14,721 |
| Median (kWh/meter) | 15,158 |
Electricity
| Consumption (kWh) | 138,424 |
|---|---|
| Meter count | 32 |
| Mean (kWh/meter) | 4,326 |
| Median (kWh/meter) | 3,198 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in AL4 9SJ, for 2015.
- Meter count: The total number of meters in AL4 9SJ.
- Mean: The mean average consumption per meter, in kWh.
- Median: The median average consumption per meter, in kWh.
Source: Postcode level electricity estimates: 2015 (experimental)
Licence: Open Government Licence
Deprivation
5.3% of English postcodes are less deprived than AL4 9SJ:Food Standards Agency
Three nearest food hygiene ratings to AL4 9SJ (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to AL4 9SJ
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| St Brelades | 18:00 | 11:45 | 266m |
| The Ridgeway | 18:00 | 12:00 | 548m |
| Marshalswick P.o | 18:40 | 12:00 | 772m |
AL4 9SJ ITL and AL4 9SJ LAU
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for AL4 9SJ:
| ITL 1 Code | Name |
|---|---|
| TLH | East |
| ITL 2 Code | Name |
| TLH2 | Bedfordshire and Hertfordshire |
| ITL 3 Code | Name |
| TLH23 | Hertfordshire CC |
| LAU 1 Code | Name |
| E07000240 | St Albans |
AL4 9SJ census areas
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for AL4 9SJ:
| Code | Name | |
|---|---|---|
| OA | E00120413 | |
| LSOA | E01023711 | St Albans 008C |
| MSOA | E02004931 | St Albans 008 |
Nearest postcodes to AL4 9SJ
| AL4 9SN | Windmill Avenue | 45m |
| AL4 9XA | The Ridgeway | 46m |
| AL4 9SW | Chiltern Road | 92m |
| AL4 9XJ | The Ridgeway | 112m |
| AL4 9TB | Chiltern Road | 134m |
| AL4 9TE | Chiltern Road | 135m |
| AL4 9XB | Summerlands Road | 145m |
| AL4 9SL | Windmill Avenue | 152m |
| AL4 9XL | Tewin Close | 154m |
| AL4 9TR | Regent Close | 171m |
- Contains OS data © Crown copyright and database right (2026)
- Contains Royal Mail data © Royal Mail copyright and Database right (2026)
- Contains National Statistics data © Crown copyright and database right (2026)
- Data produced by Land Registry © Crown copyright (2026)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2026)
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