SL4 5BL

Eton & Castle · Windsor and Maidenhead · England

Updated September 2026

Compare this postcode

Location overview

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Post town
Windsor
Local authority
Windsor and Maidenhead
Constituency
Windsor
Postcode district
SL4
Postcode sector
SL4 5

Nearby postcodes

Nearby postcode distances
Postcode Distance
SL4 5GE 60 m
SL4 3WN 110 m
SL4 5DP 114 m
SL4 3RY 129 m
SL4 3YL 137 m
Complete postcode fields and official codes
Postcode
SL4 5BL
Status
Current
Introduced
1 June 2001
Terminated
Not published
Postcode area
SL
Postcode district
SL4
Postcode sector
SL4 5
Latitude
51.479854
Longitude
-0.622809
British National Grid easting
495,733
British National Grid northing
176,554

Statistical and administrative geographies

Country
England · E92000001
Region
South East · E12000008
Local authority district
Windsor and Maidenhead · E06000040
Parish or community
E43000259
Westminster constituency
Windsor · E14001588
Output area
E00083530
Lower layer super output area
Windsor and Maidenhead 012A · E01016545
Middle layer super output area
Windsor and Maidenhead 012 · E02003432

Postcode source versions

Explore SL4

81 recorded sales at this postcode
Address Date Price
Clarendon Court, 128 - 132, Flat 22, Clarence Road, Windsor, SL4 5BL 12 March 2026 £299,950
Clarendon Court 128-132, Flat 19, Clarence Road, Windsor, SL4 5BL 9 December 2025 £295,000
Clarendon Court 128-132, Flat 36, Clarence Road, Windsor, SL4 5BL 31 October 2025 £315,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
61
Primary
25
Secondary
14
  1. The Green Room School

    Other independent special school

    286 m
  2. Trinity St Stephen CofE Aided First School

    Voluntary aided school

    345 m
  3. The Windsor Boys' School

    Academy converter

    355 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
2,789
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 855
  • Shoplifting 308
  • Anti social behaviour 273
  • Other theft 233
  • Public order 228

Census 2021

Population and age profile

Postcode residents
69

39 female, 30 male

Postcode households
34
Residents per household
2.0
SL4 5 residents
9,826

Age bands in SL4 5

Wider postcode sector
Age 0 to 14
18.2%

1,824 residents

Age 15 to 24
8.9%

897 residents

Age 25 to 44
26%

2,610 residents

Age 45 to 64
27.3%

2,740 residents

Age 65 and over
19.6%

1,973 residents

This postcode contained 0.7% of the sector's usual residents on Census Day. The age profile describes the wider SL4 5 sector, not people in this individual postcode.

Small counts are adjusted for privacy, so totals can differ slightly between Census tables.

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+
0%
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%

Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.

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

GP practices

14

within 5 km

  • CLARENCE MEDICAL CENTRE

    VANSITTART ROAD, WINDSOR, SL4 5AS

    ODS code K81074

    342 m

  • LEE HOUSE SURGERY

    84 OSBORNE ROAD, WINDSOR, SL4 3EW

    ODS code K81046

    715 m

  • SHEET STREET SURGERY

    21 SHEET STREET, WINDSOR, SL4 1BZ

    ODS code K81068

    1.2 km

  • SOUTH MEADOW SURGERY

    3 CHURCH CLOSE, ETON, WINDSOR, SL4 6AP

    ODS code K81630

    1.3 km

  • DATCHET HEALTH CENTRE

    GREEN LANE, DATCHET, SLOUGH, SL3 9EX

    ODS code K81021

    3.2 km

  • CHAPEL MEDICAL CENTRE

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

    ODS code Y00265

    3.5 km

  • HERSCHEL MEDICAL CENTRE

    45 OSBORNE STREET, SLOUGH, SL1 1TT

    ODS code K81043

    3.6 km

  • THE VILLAGE MEDICAL CENTRE

    45 MERCIAN WAY, CHIPPENHAM, SLOUGH, SL1 5ND

    ODS code K81082

    4.1 km

  • DR NABI

    261 BATH ROAD, SLOUGH, SL1 5PP

    ODS code K81608

    4.4 km

  • SHREEJI MEDICAL CENTRE

    22 WHITBY ROAD, SLOUGH, SL1 3DQ

    ODS code K81085

    4.4 km

  • CROSBY HOUSE SURGERY

    91 STOKE POGES LANE, SLOUGH, SL1 3NY

    ODS code K81034

    4.5 km

  • SLOUGH TREATMENT, ADVICE & RECOVERY TEAM

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

    ODS code Y01253

    4.8 km

  • BHARANI MEDICAL CENTRE

    450 BATH ROAD, CIPPENHAM, SLOUGH, SL1 6BB

    ODS code K81083

    4.9 km

  • KUMAR MEDICAL CENTRE

    59 GRASMERE AVENUE, SLOUGH, SL2 5JE

    ODS code K81616

    4.9 km

Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.

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

Nearby transport

  • Vansittart Road

    BCT · Windsor

    0.1 miles
  • Orchard Avenue

    BCT · Clewer

    0.1 miles
  • Vansittart Road

    BCT · Windsor

    0.2 miles
  • Parsonage Lane

    BCT · Clewer

    0.2 miles
  • Windsor Boys School

    BCT · Windsor

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Windsor and Maidenhead 012A, 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

7 of 10

Overall England rank

22,393 of 33,755

Income
6 of 10
Employment
7 of 10
Education and skills
8 of 10
Health and disability
10 of 10
Crime
3 of 10
Housing and services
8 of 10
Living environment
4 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
41
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

Property market

The five-year median is £312,500 from 10 recorded sales in SL4 5BL. 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

61 open schools are in scope, including 25 primary and 14 secondary schools. The Green Room School is the nearest published school at 286 m.

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

Recorded crime

2,789 published events cover 12 months, averaging 232.417 events per published month. The largest recorded category is Violence and sexual offences with 855 events.

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