SL6 4NU

Boyn Hill · Windsor and Maidenhead · England

Updated September 2026

Compare this postcode

Location overview

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Post town
Maidenhead
Local authority
Windsor and Maidenhead
Constituency
Maidenhead
Postcode district
SL6
Postcode sector
SL6 4

Nearby postcodes

Nearby postcode distances
Postcode Distance
SL6 4NT 111 m
SL6 4PR 195 m
SL6 3BA 203 m
SL6 3PS 203 m
SL6 3NZ 230 m
Complete postcode fields and official codes
Postcode
SL6 4NU
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
SL
Postcode district
SL6
Postcode sector
SL6 4
Latitude
51.512392
Longitude
-0.753484
British National Grid easting
486,597
British National Grid northing
180,010

Statistical and administrative geographies

Country
England · E92000001
Region
South East · E12000008
Local authority district
Windsor and Maidenhead · E06000040
Electoral ward
Boyn Hill · E05012497
Parish or community
E43000259
Westminster constituency
Maidenhead · E14001348
Output area
E00083484
Lower layer super output area
Windsor and Maidenhead 006C · E01016534
Middle layer super output area
Windsor and Maidenhead 006 · E02003426

Postcode source versions

Explore SL6

38 recorded sales at this postcode
Address Date Price
23, Lees Close, Maidenhead, SL6 4NU 25 November 2024 £850,000
29, Lees Close, Maidenhead, SL6 4NU 30 July 2024 £1,020,000
18, Lees Close, Maidenhead, SL6 4NU 18 July 2024 £750,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
33
Primary
20
Secondary
6
  1. Altwood Church of England School

    Academy converter

    474 m
  2. St Edmund Campion Catholic Primary School and Nursery

    Academy converter

    482 m
  3. Cox Green School

    Academy converter

    495 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
1,129
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 516
  • Vehicle crime 108
  • Anti social behaviour 99
  • Public order 84
  • Criminal damage and arson 83

Census 2021

Population and age profile

Postcode residents
92

44 female, 48 male

Postcode households
29
Residents per household
3.2
SL6 4 residents
8,662

Age bands in SL6 4

Wider postcode sector
Age 0 to 14
20%

1,680 residents

Age 15 to 24
10.3%

867 residents

Age 25 to 44
28.6%

2,410 residents

Age 45 to 64
25.8%

2,173 residents

Age 65 and over
15.3%

1,286 residents

This postcode contained 1.1% of the sector's usual residents on Census Day. The age profile describes the wider SL6 4 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

9

within 5 km

  • REDWOOD HOUSE SURGERY

    REDWOOD HOUSE, CANNON LANE, MAIDENHEAD, SL6 3PH

    ODS code K81097

    597 m

  • WOODLANDS PARK SURGERY

    15 WOODLANDS PARK ROAD, WOODLANDS PARK, MAIDENHEAD, SL6 3NW

    ODS code K81015

    1.2 km

  • ROSS ROAD MEDICAL CENTRE

    85 ROSS ROAD, MAIDENHEAD, SL6 2SR

    ODS code K81019

    1.4 km

  • THE SYMONS MEDICAL CENTRE

    25 ALL SAINTS AVENUE, MAIDENHEAD, SL6 6EL

    ODS code K81066

    1.5 km

  • LINDEN MEDICAL CENTRE

    9A LINDEN AVENUE, MAIDENHEAD, SL6 6JJ

    ODS code K81018

    2.3 km

  • CORDWALLIS ROAD SURGERY

    CORDWALLIS ROAD, MAIDENHEAD, SL6 7DQ

    ODS code K81607

    2.7 km

  • CLAREMONT HOLYPORT SURGERY

    CLAREMONT SURGERY, 2 COOKHAM ROAD, MAIDENHEAD, SL6 8AN

    ODS code K81020

    2.7 km

  • THE CEDARS SURGERY

    WILDERNESS MEDICAL CENTRE, 8 COOKHAM ROAD, MAIDENHEAD, SL6 8AJ

    ODS code K81036

    2.7 km

  • ROSEMEAD SURGERY

    8A RAY PARK AVENUE, MAIDENHEAD, SL6 8DS

    ODS code K81084

    3.7 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

  • Wessex Way

    BCT · Cox Green

    0.2 miles
  • Wessex Way

    BCT · Cox Green

    0.2 miles
  • Farmers Way

    BCT · Cox Green

    0.2 miles
  • Altwood Schools

    BCT · Altwood

    0.2 miles
  • Altwood Schools

    BCT · Altwood

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Windsor and Maidenhead 006C, 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

33,620 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
8 of 10
Living environment
9 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
2
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 £780,000 from 9 recorded sales in SL6 4NU. 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

33 open schools are in scope, including 20 primary and 6 secondary schools. Altwood Church of England School is the nearest published school at 474 m.

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

Recorded crime

1,129 published events cover 12 months, averaging 94.083 events per published month. The largest recorded category is Violence and sexual offences with 516 events.

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