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SL4 1DD

Eton & Castle · Windsor and Maidenhead · England

Updated September 2026

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Location overview

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Ward
Eton & Castle
Local authority
Windsor and Maidenhead
Constituency
Windsor
Postcode district
SL4
Postcode sector
SL4 1

Nearby postcodes

Nearby postcode distances
Postcode Distance
SL4 1BY 40 m
SL4 1BP 45 m
SL4 1HF 63 m
SL4 2AA 64 m
SL4 1BZ 70 m
Complete postcode fields and official codes
Postcode
SL4 1DD
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
SL
Postcode district
SL4
Postcode sector
SL4 1
Latitude
51.479041
Longitude
-0.605754
British National Grid easting
496,919
British National Grid northing
176,486

Statistical and administrative geographies

Country
England · E92000001
Region
South East · E12000008
Local authority district
Windsor and Maidenhead · E06000040
Electoral ward
Eton & Castle · E05012504
Parish or community
E43000259
Westminster constituency
Windsor · E14001588
Output area
E00083547
Lower layer super output area
Windsor and Maidenhead 010A · E01016544
Middle layer super output area
Windsor and Maidenhead 010 · E02003430

Postcode source versions

Explore SL4

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

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
68
Primary
29
Secondary
18

  1. The Queen Anne Royal Free CofE Controlled First School

    Voluntary controlled school

    594 m

  2. The King's House School, Windsor

    Other independent school

    602 m

  3. Upton House School

    Other independent school

    664 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
2,082
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 580
  • Shoplifting 280
  • Anti social behaviour 195
  • Other theft 181
  • Public order 180

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
SL4 1 residents
3,477

Age bands in SL4 1

Wider postcode sector
Age 0 to 14
13.4%

454 residents

Age 15 to 24
11.4%

386 residents

Age 25 to 44
35%

1,184 residents

Age 45 to 64
27.8%

940 residents

Age 65 and over
12.5%

423 residents

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+
100%
Ultrafast, 300 Mbit/s+
0%
Gigabit-capable
0%
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

15

within 5 km

  • SHEET STREET SURGERY

    21 SHEET STREET, WINDSOR, SL4 1BZ

    ODS code K81068

    70 m

  • LEE HOUSE SURGERY

    84 OSBORNE ROAD, WINDSOR, SL4 3EW

    ODS code K81046

    721 m

  • CLARENCE MEDICAL CENTRE

    VANSITTART ROAD, WINDSOR, SL4 5AS

    ODS code K81074

    848 m

  • SOUTH MEADOW SURGERY

    3 CHURCH CLOSE, ETON, WINDSOR, SL4 6AP

    ODS code K81630

    1.1 km

  • DATCHET HEALTH CENTRE

    GREEN LANE, DATCHET, SLOUGH, SL3 9EX

    ODS code K81021

    2.1 km

  • CHAPEL MEDICAL CENTRE

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

    ODS code Y00265

    3.0 km

  • HERSCHEL MEDICAL CENTRE

    45 OSBORNE STREET, SLOUGH, SL1 1TT

    ODS code K81043

    3.2 km

  • CROSBY HOUSE SURGERY

    91 STOKE POGES LANE, SLOUGH, SL1 3NY

    ODS code K81034

    4.4 km

  • SHREEJI MEDICAL CENTRE

    22 WHITBY ROAD, SLOUGH, SL1 3DQ

    ODS code K81085

    4.4 km

  • KUMAR MEDICAL CENTRE

    59 GRASMERE AVENUE, SLOUGH, SL2 5JE

    ODS code K81616

    4.5 km

  • SLOUGH TREATMENT, ADVICE & RECOVERY TEAM

    ELLIMAN RESOURCE CENTRE, 27 PURSERS CLOSE, SLOUGH, SL2 5DL

    ODS code Y01253

    4.5 km

  • 240 WEXHAM ROAD

    WEXHAM ROAD, SLOUGH, SL2 5JP

    ODS code K81645

    4.6 km

  • THE VILLAGE MEDICAL CENTRE

    45 MERCIAN WAY, CHIPPENHAM, SLOUGH, SL1 5ND

    ODS code K81082

    4.8 km

  • DR NABI

    261 BATH ROAD, SLOUGH, SL1 5PP

    ODS code K81608

    4.8 km

  • LANGLEY HEALTH CENTRE

    COMMON ROAD, LANGLEY, SLOUGH, SL3 8LE

    ODS code K81024

    4.8 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

  • Sheet Street

    BCT · Windsor

    0.0 miles

  • Sheet Street

    BCT · Windsor

    0.0 miles

  • Bachelors Acre

    BCT · Windsor

    0.1 miles

  • Frances Road

    BCT · Windsor

    0.2 miles

  • Frances Road

    BCT · Windsor

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Windsor and Maidenhead 010A, 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

8 of 10

Overall England rank

25,380 of 33,755

Income
9 of 10
Employment
10 of 10
Education and skills
9 of 10
Health and disability
10 of 10
Crime
2 of 10
Housing and services
7 of 10
Living environment
2 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.

Schools

Published establishments

68 open schools are in scope, including 29 primary and 18 secondary schools. The Queen Anne Royal Free CofE Controlled First School is the nearest published school at 594 m.

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

Recorded crime

Published police records

2,082 published events cover 12 months, averaging 173.5 events per published month. The largest recorded category is Violence and sexual offences with 580 events.

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