SL4 3QN maps, stats, and open data
SL4 3QN lies on St Johns Road in Windsor. SL4 3QN is located in the Clewer East 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 3QN maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
SL4 3QN geodata
| Easting | 495314 |
| Northing | 176438 |
| Latitude | 51.478880 |
| Longitude | -0.628888 |
Where is SL4 3QN?
| Street | St Johns Road |
| Town/City | Windsor |
| Country | England |
| Postcode District | SL4 |
SL4 3QN Elevation
Elevation or altitude of SL4 3QN 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 | Clewer East |
|---|---|
| Constituency | Windsor |
House Prices
Sales of detached houses in SL4 3QN
17A, ST JOHNS ROAD, WINDSOR, SL4 3QN 2007 24 AUG £365,000 |
13, ST JOHNS ROAD, WINDSOR, SL4 3QN 2006 17 JUL £384,950 |
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 3QN
| Parsonage Lane (Clarence Road) | Clewer | 74m |
| Parsonage Lane (Clarence Road) | Clewer | 76m |
| Orchard Avenue (Clarence Road) | Windsor | 207m |
| Winton House (Dedworth Road) | Clewer | 273m |
| Winton House (Dedworth Road) | Clewer | 306m |
Nearest railway stations to SL4 3QN
| Windsor & Eton Central Station | 1.4km |
| Windsor & Eton Riverside Station | 1.7km |
| Datchet Station | 3.5km |
Broadband
Broadband access in SL4 3QN (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 SL4 3QN (2019 data)
Download
| Median download speed | 75.5Mbps |
| Average download speed | 92.0Mbps |
| Maximum download speed | 350.00Mbps |
Upload
| Median upload speed | 15.0Mbps |
| Average upload speed | 12.7Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in SL4 3QN (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 3QN gas and electricity consumption
Estimated total energy consumption in SL4 3QN by fuel type, 2015.
Gas
| Consumption (kWh) | 331,184 |
|---|---|
| Meter count | 19 |
| Mean (kWh/meter) | 17,431 |
| Median (kWh/meter) | 16,810 |
Electricity
| Consumption (kWh) | 92,658 |
|---|---|
| Meter count | 19 |
| Mean (kWh/meter) | 4,877 |
| Median (kWh/meter) | 4,729 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in SL4 3QN, for 2015.
- Meter count: The total number of meters in SL4 3QN.
- 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
18.5% of English postcodes are less deprived than SL4 3QN:Food Standards Agency
Three nearest food hygiene ratings to SL4 3QN (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to SL4 3QN
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Hatch Lane | 17:30 | 11:45 | 366m |
| Alma Road | 17:15 | 11:30 | 873m |
| Clewer Hill Road | 17:30 | 11:45 | 888m |
SL4 3QN ITL and SL4 3QN 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 3QN:
| 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 3QN 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 3QN:
| Code | Name | |
|---|---|---|
| OA | E00083559 | |
| LSOA | E01016549 | Windsor and Maidenhead 014B |
| MSOA | E02003434 | Windsor and Maidenhead 014 |
Nearest postcodes to SL4 3QN
| SL4 5BQ | Clarence Road | 48m |
| SL4 3TP | Green Lane | 64m |
| SL4 3QW | Albion Place | 70m |
| SL4 3QD | Green Lane | 76m |
| SL4 5FF | Oak Lane | 92m |
| SL4 3QF | Clewer New Town | 99m |
| SL4 3QP | Bridgeman Drive | 102m |
| SL4 3QU | Hatch Lane | 106m |
| SL4 3SB | Bridgeman Drive | 110m |
| SL4 5AN | Clarence Road | 111m |
- 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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