SL4 3BD maps, stats, and open data
SL4 3BD lies on St Marks Road in Windsor. SL4 3BD is located in the Eton & Castle electoral ward, within the unitary authority of Windsor and Maidenhead and the English Parliamentary constituency of Windsor. The Sub Integrated Care Board (ICB) Location is NHS Frimley ICB - D4U1Y and the police force is Thames Valley. This postcode has been in use since January 1980.
SL4 3BD maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
SL4 3BD geodata
| Easting | 496272 |
| Northing | 176298 |
| Latitude | 51.477460 |
| Longitude | -0.615136 |
Where is SL4 3BD?
| Street | St Marks Road |
| Town/City | Windsor |
| Country | England |
| Postcode District | SL4 |
SL4 3BD Elevation
Elevation or altitude of SL4 3BD as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 20m | 66ft |
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 | Eton & Castle |
|---|---|
| Constituency | Windsor |
House Prices
Sales of detached houses in SL4 3BD
15, ST MARKS ROAD, WINDSOR, SL4 3BD 2011 25 AUG £600,000 |
15, ST MARKS ROAD, WINDSOR, SL4 3BD 2008 24 JUN £580,000 |
37, ST MARKS ROAD, WINDSOR, SL4 3BD 1999 24 SEP £347,000 |
29, ST MARKS ROAD, WINDSOR, SL4 3BD 1999 20 AUG £250,000 |
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 SL4 3BD
| Knights Place (St Leonards Road) | Windsor | 310m |
| Alma Road (Clarence Road) | Windsor | 312m |
| Alma Road (Clarence Road) | Windsor | 351m |
| All Saints' Church (Frances Road) | Windsor | 361m |
| All Saints' Church (Frances Road) | Windsor | 365m |
Nearest railway stations to SL4 3BD
| Windsor & Eton Central Station | 0.7km |
| Windsor & Eton Riverside Station | 1.1km |
| Datchet Station | 2.6km |
Broadband
Broadband access in SL4 3BD (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 | 96.7% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in SL4 3BD (2019 data)
Download
| Median download speed | 40.1Mbps |
| Average download speed | 54.3Mbps |
| Maximum download speed | 350.00Mbps |
Upload
| Median upload speed | 6.4Mbps |
| Average upload speed | 6.6Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in SL4 3BD (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% |
SL4 3BD gas and electricity consumption
Estimated total energy consumption in SL4 3BD by fuel type, 2015.
Gas
| Consumption (kWh) | 541,973 |
|---|---|
| Meter count | 25 |
| Mean (kWh/meter) | 21,679 |
| Median (kWh/meter) | 22,824 |
Electricity
| Consumption (kWh) | 148,351 |
|---|---|
| Meter count | 31 |
| Mean (kWh/meter) | 4,786 |
| Median (kWh/meter) | 5,440 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in SL4 3BD, for 2015.
- Meter count: The total number of meters in SL4 3BD.
- 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
24.7% of English postcodes are less deprived than SL4 3BD:Food Standards Agency
Three nearest food hygiene ratings to SL4 3BD (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to SL4 3BD
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Saint Marks Road | 17:15 | 11:30 | 116m |
| Alma Road | 17:15 | 11:30 | 178m |
| Saint Leonards Road | 17:15 | 11:30 | 356m |
SL4 3BD ITL and SL4 3BD 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 SL4 3BD:
| ITL 1 Code | Name |
|---|---|
| TLJ | South East (England) |
| ITL 2 Code | Name |
| TLJ1 | Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 Code | Name |
| TLJ11 | Berkshire |
| LAU 1 Code | Name |
| E06000040 | Windsor and Maidenhead |
SL4 3BD 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 SL4 3BD:
| Code | Name | |
|---|---|---|
| OA | E00083532 | |
| LSOA | E01016545 | Windsor and Maidenhead 012A |
| MSOA | E02003432 | Windsor and Maidenhead 012 |
Nearest postcodes to SL4 3BD
| SL4 3BE | St Marks Road | 33m |
| SL4 3BQ | Queens Road | 70m |
| SL4 3BG | St Marks Place | 81m |
| SL4 3AU | Hawtrey Road | 88m |
| SL4 3FH | Hawtrey Road | 93m |
| SL4 3HB | Alma Road | 98m |
| SL4 3BH | Queens Road | 98m |
| SL4 3FJ | Alma Road | 106m |
| SL4 3EZ | Alma Road | 128m |
| SL4 3HA | Alma Road | 134m |
- 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)
GetTheData.com is owned and operated by GetTheData Publishing Limited.
Company Number: 11075184 · Registered in England and Wales.
Registered Office: 3rd Floor, 86-90 Paul Street, London, England, EC2A 4NE
By accessing our site you agree to us using cookies, and sharing information about your use of our site, in accordance with our privacy policy.