Schools
54 open schools are in scope, including 21 primary and 13 secondary schools. Upton House School is the nearest published school at 127 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
SL4 3DH
Eton & Castle · Windsor and Maidenhead · England
Updated September 2026
Compare this postcodeLocation overview
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- Ward
- Eton & Castle
- Local authority
- Windsor and Maidenhead
- Constituency
- Windsor
- Postcode district
- SL4
- Postcode sector
- SL4 3
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- SL4 3DH
- Status
- Current
- Introduced
- 1 December 2015
- Terminated
- Not published
- Postcode area
- SL
- Postcode district
- SL4
- Postcode sector
- SL4 3
- Latitude
- 51.474815
- Longitude
- -0.614897
- British National Grid easting
- 496,293
- British National Grid northing
- 176,004
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
- E00083542
- Lower layer super output area
- Windsor and Maidenhead 015A · E01016546
- Middle layer super output area
- Windsor and Maidenhead 015 · E02003435
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore SL4
Schools
Within 3.1 miles of this postcode
- Open schools
- 54
- Primary
- 21
- Secondary
- 13
- 127 m
Upton House School
Other independent school
- 242 m
The King's House School, Windsor
Other independent school
- 536 m
The Queen Anne Royal Free CofE Controlled First School
Voluntary controlled school
Recorded crime
Within 1 mile of this postcode
- Published events
- 2,328
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 679
- Shoplifting 306
- Anti social behaviour 215
- Other theft 197
- Public order 196
Census 2021
Population and age profile
- Postcode residents
- 8
- Postcode households
- 6
- Residents per household
- 1.3
- SL4 3 residents
- 9,075
5 female, 3 male
Age bands in SL4 3
Wider postcode sector- Age 0 to 14
- 17.2%
- Age 15 to 24
- 9.9%
- Age 25 to 44
- 27.9%
- Age 45 to 64
- 29.1%
- Age 65 and over
- 16%
1,550 residents
891 residents
2,520 residents
2,627 residents
1,449 residents
This postcode contained 0.1% of the sector's usual residents on Census Day. The age profile describes the wider SL4 3 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+
- 100%
- Ultrafast, 300 Mbit/s+
- 100%
- Gigabit-capable
- 100%
- 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
10
within 5 km
LEE HOUSE SURGERY
84 OSBORNE ROAD, WINDSOR, SL4 3EW
ODS code K81046
114 m
CLARENCE MEDICAL CENTRE
VANSITTART ROAD, WINDSOR, SL4 5AS
ODS code K81074
552 m
SHEET STREET SURGERY
21 SHEET STREET, WINDSOR, SL4 1BZ
ODS code K81068
846 m
SOUTH MEADOW SURGERY
3 CHURCH CLOSE, ETON, WINDSOR, SL4 6AP
ODS code K81630
1.6 km
DATCHET HEALTH CENTRE
GREEN LANE, DATCHET, SLOUGH, SL3 9EX
ODS code K81021
2.8 km
CHAPEL MEDICAL CENTRE
SLOUGH WALK IN CENTRE, UPTON HOSPITAL, ALBERT STREET, SLOUGH, SL1 2BJ
ODS code Y00265
3.7 km
HERSCHEL MEDICAL CENTRE
45 OSBORNE STREET, SLOUGH, SL1 1TT
ODS code K81043
3.8 km
THE VILLAGE MEDICAL CENTRE
45 MERCIAN WAY, CHIPPENHAM, SLOUGH, SL1 5ND
ODS code K81082
4.8 km
SHREEJI MEDICAL CENTRE
22 WHITBY ROAD, SLOUGH, SL1 3DQ
ODS code K81085
4.9 km
CROSBY HOUSE SURGERY
91 STOKE POGES LANE, SLOUGH, SL1 3NY
ODS code K81034
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 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Nearby transport
- 0.0 miles
King Edward VII Hospital
BCT · Windsor
- 0.1 miles
King Edward VII Hospital
BCT · Windsor
- 0.1 miles
King Edward VII Hospital
BCT · Windsor
- 0.1 miles
Alexandra Road
BCT · Windsor
- 0.2 miles
Alexandra Road
BCT · Windsor
Relative deprivation
English Indices of Deprivation 2025 for Windsor and Maidenhead 015A, 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
30,494 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
- 10 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
- 8
- 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
Recorded crime
2,328 published events cover 12 months, averaging 194 events per published month. The largest recorded category is Violence and sexual offences with 679 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.