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SL4 3SU

Old Windsor · Windsor and Maidenhead · England

Updated September 2026

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Location overview

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Post town
Windsor
Ward
Old Windsor
Local authority
Windsor and Maidenhead
Constituency
Windsor
Postcode district
SL4
Postcode sector
SL4 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
SL4 3SZ 69 m
SL4 3TA 85 m
SL4 3JE 87 m
SL4 3SY 106 m
SL4 3SX 112 m
Complete postcode fields and official codes
Postcode
SL4 3SU
Status
Current
Introduced
1 January 1983
Terminated
Not published
Postcode area
SL
Postcode district
SL4
Postcode sector
SL4 3
Latitude
51.472591
Longitude
-0.608586
British National Grid easting
496,736
British National Grid northing
175,765

Statistical and administrative geographies

Country
England · E92000001
Region
South East · E12000008
Local authority district
Windsor and Maidenhead · E06000040
Electoral ward
Old Windsor · E05012507
Parish or community
E43000259
Westminster constituency
Windsor · E14001588
Output area
E00083787
Lower layer super output area
Windsor and Maidenhead 015C · E01016596
Middle layer super output area
Windsor and Maidenhead 015 · E02003435

Postcode source versions

Explore SL4

Use the wider postcode district to compare the same evidence across more locations.

Property

At this postcode

View all property records
14 recorded sales at this postcode
Address Date Price
96, Fountain Gardens, Windsor, SL4 3SU 30 September 2021 £955,000
102, Fountain Gardens, Windsor, SL4 3SU 27 September 2012 £662,500
97, Fountain Gardens, Windsor, SL4 3SU 24 March 2009 £435,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
53
Primary
21
Secondary
14

  1. Queensmead House School

    Other independent special school

    132 m

  2. The Queen Anne Royal Free CofE Controlled First School

    Voluntary controlled school

    159 m

  3. The King's House School, Windsor

    Other independent school

    329 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
1,917
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 566
  • Shoplifting 267
  • Anti social behaviour 183
  • Public order 167
  • Other theft 159

Census 2021

Population and age profile

Postcode residents
29

17 female, 12 male

Postcode households
12
Residents per household
2.4
SL4 3 residents
9,075

Age bands in SL4 3

Wider postcode sector
Age 0 to 14
17.2%

1,550 residents

Age 15 to 24
9.9%

891 residents

Age 25 to 44
27.9%

2,520 residents

Age 45 to 64
29.1%

2,627 residents

Age 65 and over
16%

1,449 residents

This postcode contained 0.3% of the sector's usual residents on Census Day. The age profile describes the wider SL4 3 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

Fixed broadband coverage

Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.

Superfast, 30 Mbit/s+
100%
Ultrafast, 100 Mbit/s+
66.7%
Ultrafast, 300 Mbit/s+
66.7%
Gigabit-capable
66.7%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
0%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

7

within 5 km

  • LEE HOUSE SURGERY

    84 OSBORNE ROAD, WINDSOR, SL4 3EW

    ODS code K81046

    562 m

  • SHEET STREET SURGERY

    21 SHEET STREET, WINDSOR, SL4 1BZ

    ODS code K81068

    814 m

  • CLARENCE MEDICAL CENTRE

    VANSITTART ROAD, WINDSOR, SL4 5AS

    ODS code K81074

    998 m

  • SOUTH MEADOW SURGERY

    3 CHURCH CLOSE, ETON, WINDSOR, SL4 6AP

    ODS code K81630

    1.8 km

  • DATCHET HEALTH CENTRE

    GREEN LANE, DATCHET, SLOUGH, SL3 9EX

    ODS code K81021

    2.5 km

  • CHAPEL MEDICAL CENTRE

    SLOUGH WALK IN CENTRE, UPTON HOSPITAL, ALBERT STREET, SLOUGH, SL1 2BJ

    ODS code Y00265

    3.8 km

  • HERSCHEL MEDICAL CENTRE

    45 OSBORNE STREET, SLOUGH, SL1 1TT

    ODS code K81043

    3.9 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Osborne Road

    BCT · Windsor

    0.1 miles

  • Osborne Road

    BCT · Windsor

    0.1 miles

  • Queensmead

    BCT · Windsor

    0.1 miles

  • Queensmead

    BCT · Windsor

    0.1 miles

  • Queens Terrace

    BCT · Windsor

    0.1 miles

Relative deprivation

English Indices of Deprivation 2025 for Windsor and Maidenhead 015C, the published LSOA linked to this postcode. Decile 1 contains the most deprived 10% of English LSOAs and decile 10 the least deprived 10%.

Overall IMD decile

10 of 10

Overall England rank

32,853 of 33,755

Income
10 of 10
Employment
10 of 10
Education and skills
10 of 10
Health and disability
10 of 10
Crime
10 of 10
Housing and services
9 of 10
Living environment
6 of 10

These are relative area statistics, not measures of an individual household, affluence or absolute change. They cannot be compared with indices for other UK nations. Source: English Indices of Deprivation 2025, version 2025-v2.

Flood risk

Environment Agency long-term indicators for the area around addresses in this postcode. They are not an assessment of any individual property and do not show current or forecast flooding.

High risk addresses
0
Medium risk addresses
0
Low risk addresses
0
Groundwater flood alert area
Unlikely

Source: Environment Agency flood-risk postcode search tool data, version 2026-06-18. Check the long-term risk for an individual area. © Environment Agency copyright and/or database right 2025. All rights reserved.

Evidence in context

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £955,000 from 1 recorded sale in SL4 3SU. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Windsor and Maidenhead is £576,992 in June 2026, down 2.2% year on year.

Schools

Published establishments

53 open schools are in scope, including 21 primary and 14 secondary schools. Queensmead House School is the nearest published school at 132 m.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

Published police records

1,917 published events cover 12 months, averaging 159.75 events per published month. The largest recorded category is Violence and sexual offences with 566 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.