# SL4 3DG: area report for a postcode in Windsor and Maidenhead

SL4 3DG is a postcode in Windsor and Maidenhead.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of Windsor and Maidenhead. Open the map at SL4 3DG for neighbourhoods and points.

In: [Windsor and Maidenhead](https://openindex.co.uk/windsor-and-maidenhead) › [SL4](https://openindex.co.uk/postcode/sl4) › [SL4 3](https://openindex.co.uk/postcode/sl4-3)

## Around this postcode

- **19 crimes within 500 m**: August, down 34% on July. Windsor and Maidenhead 015A: 63 a year per 1,000 people. (Map point) https://openindex.co.uk/map/street-crime?around=-0.6150,51.4747,SL43DG
- **Windsor and Eton Central, 1 km**: About 13 minutes on foot. (Exact point) https://openindex.co.uk/map/stations?around=-0.6150,51.4747,SL43DG
- **7 schools within 800 m**: Nearest is 140 m away. (Exact point) https://openindex.co.uk/map/schools?around=-0.6150,51.4747,SL43DG
- **No property in SL4 3DG listed at risk of flooding**: From rivers or the sea, with flood defences, in the Environment Agency's assessment. (Postcode) https://openindex.co.uk/map/flood-risk-by-postcode?around=-0.6150,51.4747,SL43DG
- **England’s least deprived 10%**: This neighbourhood, Windsor and Maidenhead 015A. (Neighbourhood) https://openindex.co.uk/map/deprivation-england?around=-0.6150,51.4747,SL43DG
- **£583,688 average price**: For the whole of Windsor and Maidenhead, August 2026. (Council) https://openindex.co.uk/map/house-prices?around=-0.6150,51.4747,SL43DG
- **3 GP practices within 1 km**: Nearest is 130 m away. (Postcode) https://openindex.co.uk/map/gp-practices?around=-0.6150,51.4747,SL43DG
- **6 supermarkets within 1 km**: Nearest is 600 m away. (Exact point) https://openindex.co.uk/map/supermarkets?around=-0.6150,51.4747,SL43DG
- **46.2% can get gigabit broadband at SL4 3DG**: Superfast for 100%. What can be ordered, January 2026. (Postcode) https://openindex.co.uk/map/broadband-by-postcode?around=-0.6150,51.4747,SL43DG
- **Moderate road and rail noise at SL4 3DG**: Road 60 dB, rail under 40 dB or not modelled (Lden, modelled for 2021) (Postcode) https://openindex.co.uk/map/noise-by-postcode?around=-0.6150,51.4747,SL43DG
- **Not in a radon Affected Area**: Under 1% of homes in this 1 km square are estimated to be at or above the radon Action Level. (1 km grid) https://openindex.co.uk/map/radon?around=-0.6150,51.4747,SL43DG
- **13.9 µg/m³ nitrogen dioxide**: Modelled yearly average for this 1 km square, 2025. (1 km grid) https://openindex.co.uk/map/nitrogen-dioxide?around=-0.6150,51.4747,SL43DG

## Nearest schools

| School | Phase | Distance | Ofsted | Results |
| --- | --- | --- | --- | --- |
| [Upton House School](https://openindex.co.uk/school/upton-house-school-e110130) | Independent | 140 m (2 minutes on foot) | Not in Ofsted's state-funded schools file | – |
| [The King's House School, Windsor](https://openindex.co.uk/school/the-kings-house-school-windsor-e138768) | Independent | 250 m (3 minutes on foot) | Not in Ofsted's state-funded schools file | – |
| [The Queen Anne Royal Free CofE Controlled First School](https://openindex.co.uk/school/the-queen-anne-royal-free-cofe-controlled-first-school-e109997) | Primary | 540 m (7 minutes on foot) | Graded inspection, November 2024: no overall grade | – |
| [Trevelyan Middle School](https://openindex.co.uk/school/trevelyan-middle-school-e143390) | Secondary | 590 m (7 minutes on foot) | Standards maintained, December 2024 | 63% met the expected standard at KS2 (2024/25) |
| [Queensmead House School](https://openindex.co.uk/school/queensmead-house-school-e147663) | Special | 610 m (8 minutes on foot) | No outcome in Ofsted's file | – |
| [The Lawns Nursery School](https://openindex.co.uk/school/the-lawns-nursery-school-e109758) | Nursery | 700 m (9 minutes on foot) | School remains Outstanding, July 2024 | – |
| [Oakfield First School](https://openindex.co.uk/school/oakfield-first-school-e148786) | Primary | 700 m (9 minutes on foot) | Standards maintained, January 2025 | – |
| [The Green Room School](https://openindex.co.uk/school/the-green-room-school-e141225) | Special | 840 m (10 minutes on foot) | No outcome in Ofsted's file | – |

## Recent sales nearby

| Month | Price | Home | Distance |
| --- | --- | --- | --- |
| August 2025 | £655,000 | Terraced, established, freehold | 50 m |
| September 2023 | £706,000 | Detached, established, freehold | 60 m |
| October 2023 | £320,000 | Flat or maisonette, established, leasehold | 70 m |
| April 2026 | £315,000 | Flat or maisonette, established, leasehold | 70 m |
| May 2024 | £275,000 | Flat or maisonette, established, leasehold | 100 m |
| August 2025 | £337,500 | Flat or maisonette, established, leasehold | 110 m |
| August 2024 | £295,000 | Flat or maisonette, established, leasehold | 110 m |
| January 2026 | £317,500 | Flat or maisonette, established, leasehold | 110 m |

## Within 1 km

- GP practices: LEE HOUSE SURGERY (130 m); CLARENCE MEDICAL CENTRE (560 m); SHEET STREET SURGERY (860 m)
- Pharmacies: WINDSOR PHARMACY (520 m); SUPERDRUG PHARMACY (900 m); BOOTS (900 m)
- Dental practices: DENTAL SURGERY (10 m); WINDSOR DENTAL CENTRE (230 m); COMPLETE DENTAL (360 m); ALMA MEDICA (540 m); DENTAL SURGERY (560 m)
- Supermarkets: Morrisons Daily Windsor Springfield (600 m, Morrisons); Tesco Windsor Peascod (830 m, Tesco); Co-op Arthur Road Windsor (870 m, The Southern Co-operative); M&S Windsor (870 m, Marks and Spencer); Waitrose Windsor (910 m, Waitrose)

## Key figures

- **Average house price: £583,688** (August 2026). Windsor and Maidenhead’s average house price was £583,688 in August 2026 (HM Land Registry). Down 0.2% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £47,387** (2025). Full-time workers living in Windsor and Maidenhead earned a median of £47,387 in 2025 (ONS earnings survey). 27th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 12.3×** (2025). A home in Windsor and Maidenhead costs 12.3 times local full-time pay. Joint 20th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Deprivation score: 8.9** (2025). Windsor and Maidenhead has a deprivation score of 8.9 in the English Indices of Deprivation 2025 (MHCLG). 12th least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## Windsor and Maidenhead 015A (Neighbourhood)

- **Deprivation score: 5.4** (2025). Windsor and Maidenhead 015A has a deprivation score of 5.4 in the English Indices of Deprivation 2025 (MHCLG). Joint 3,244th least deprived of 33,755. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.
- **Median sale price: £730,000** (2025). The median price paid for a home in Windsor and Maidenhead 015A was £730,000 in 2025. Joint 1,319th most expensive of 31,750. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 1,622** (2021). Windsor and Maidenhead 015A had 1,622 usual residents at the census (ONS Census 2021). Joint 17,037th most populated of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **Gigabit broadband coverage: 94.1%** (January 2026). In Windsor and Maidenhead 015A, 94.1% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## SL4 (Postcode district)

- **Median sale price: £517,250** (2025). The median price paid for a home in SL4 was £517,250 in 2025. 251st most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 45,871** (2021). SL4 had 45,871 usual residents at the census (ONS Census 2021). 289th most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **People in radon Affected Area squares: 23%** (2022). About 23% of people in SL4 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022.
- **Gigabit broadband coverage: 83.5%** (January 2026). In SL4, 83.5% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## About

- Type: Postcode
- Council: [Windsor and Maidenhead](https://openindex.co.uk/windsor-and-maidenhead)
- Centre: 51.4747, -0.6150

Council: [Windsor and Maidenhead](https://openindex.co.uk/windsor-and-maidenhead) (Unitary authority, 100%).

## Your MP

- [Windsor](https://openindex.co.uk/constituency/windsor): Jack Rankin (Conservative), MP since July 2024.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Sources

- [Street-level crime](https://openindex.co.uk/sources/street-crime), August 2026 (Map point)
- [Rail and Tube stations](https://openindex.co.uk/sources/stations), 2024/25 (Exact point)
- [Schools](https://openindex.co.uk/sources/schools) (Exact point)
- [Flood risk by postcode](https://openindex.co.uk/sources/flood-risk-by-postcode), June 2026 (Postcode)
- [English Indices of Deprivation 2025](https://openindex.co.uk/sources/deprivation-england), 2025 (Neighbourhood)
- [Average house price](https://openindex.co.uk/sources/house-prices), August 2026 (Council)
- [GP practices](https://openindex.co.uk/sources/gp-practices) (Postcode)
- [Supermarkets](https://openindex.co.uk/sources/supermarkets) (Exact point)
- [Broadband by postcode](https://openindex.co.uk/sources/broadband-by-postcode), January 2026 (Postcode)
- [Road and rail noise by postcode](https://openindex.co.uk/sources/noise-by-postcode), 2021 (Postcode)
- [Radon potential](https://openindex.co.uk/sources/radon) (1 km grid)
- [Nitrogen dioxide (NO2)](https://openindex.co.uk/sources/nitrogen-dioxide), 2025 (1 km grid)

On the map: https://openindex.co.uk/map/sold-prices?around=-0.6150,51.4747,SL43DG

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sl4-3dg.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/sl4-3dg