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SL6

Postcode district

Postcode district covering Maidenhead and Boyn Hill, in Windsor and Maidenhead.

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SL6 postcode. How census figures are added up

Open in map

Radon Affected Area by postcode district

Worked out by Open Index · 2022

Under 1%90% or more

About 91% of people in SL6 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£510,000
Joint 261st most expensive of 2,235
Worked out by Open Index
Population
83,062
18th most populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
91%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
84.6%
UK 87.8%
Ofcom · Jan 2026

How SL6 compares

Each dot is a postcode district. The black line marks the middle one.

SL6Middle
Median sale price10 postcode districts, SL · 2025
Median sale price: every postcode district in SL10 areas from £395,931 to £867,500. The middle area is £537,375. SL6 is £510,000.
£510,0004th cheapest
Population12 postcode districts, SL · 2021
Population: every postcode district in SL12 areas from 339 to 83,062. The middle area is 23,418. SL6 is 83,062.
83,062most populated
People in radon Affected Area squares12 postcode districts, SL · 2022
People in radon Affected Area squares: every postcode district in SL12 areas from 0.0% to 100.0%. The middle area is 22.0%. SL6 is 91.0%.
91%5th most people in radon Affected Areas
Gigabit broadband coverage12 postcode districts, SL · Jan 2026
Gigabit broadband coverage: every postcode district in SL12 areas from 70.7% to 100.0%. The middle area is 87.8%. SL6 is 84.6%.
84.6%6th lowest

Is SL6 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SL6 at a rate of 59.0 per 1,000 people.

That compares with 77.9 per 1,000 people across the SL postcode area.

In August 2026 alone, 455 cases of crime and anti-social behaviour were recorded in SL6.

In the 12 months to August 2026, the most common types were violence and sexual offences (1,931), other crime (1,091) and anti-social behaviour (536).

A year earlier, the recorded crime rate in SL6 was 65.0 per 1,000 people.

Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.

Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

Deprivation in SL6, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so SL6 has no single figure. Of its 51 neighbourhoods with a rank:
  • Decile 4: 1 neighbourhood
  • Decile 5: 7 neighbourhoods
  • Decile 6: 2 neighbourhoods
  • Decile 7: 4 neighbourhoods
  • Decile 8: 6 neighbourhoods
  • Decile 9: 7 neighbourhoods
  • Decile 10 (England’s least deprived 10%): 24 neighbourhoods

English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

Neighbourhoods in SL6

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Buckinghamshire 065C1,69387.7 per 1,000857.1%
Buckinghamshire 065D2,39096.1 per 1,000940.8%
Buckinghamshire 066C1,58645.0 per 1,0001099.4%
Windsor and Maidenhead 001A1,56314.0 per 1,00010100.0%
Windsor and Maidenhead 001B1,36294.8 per 1,000996.5%
Windsor and Maidenhead 001C1,63451.6 per 1,000898.9%
Windsor and Maidenhead 001D1,11423.6 per 1,0001092.9%
Windsor and Maidenhead 002A1,60439.0 per 1,000762.1%
Windsor and Maidenhead 002B1,42231.5 per 1,000980.0%
Windsor and Maidenhead 002C1,92130.4 per 1,0001077.4%
Windsor and Maidenhead 002D1,89636.0 per 1,0001060.5%
Windsor and Maidenhead 002E1,74941.6 per 1,000872.4%
Windsor and Maidenhead 002F1,80662.2 per 1,000670.4%
Windsor and Maidenhead 003A1,82043.5 per 1,0001099.4%
Windsor and Maidenhead 003B1,50266.2 per 1,000598.9%
Windsor and Maidenhead 003C1,59369.2 per 1,000797.3%
Windsor and Maidenhead 003D1,67161.7 per 1,000598.7%
Windsor and Maidenhead 004A1,90321.8 per 1,0001092.2%
Windsor and Maidenhead 004B1,69475.0 per 1,0001091.3%
Windsor and Maidenhead 004C1,34026.2 per 1,0001086.4%
Windsor and Maidenhead 004D2,32746.5 per 1,0001082.4%
Windsor and Maidenhead 004E2,04963.4 per 1,0001079.7%
Windsor and Maidenhead 005A1,79457.3 per 1,0001087.0%
Windsor and Maidenhead 005B1,69938.7 per 1,000999.9%
Windsor and Maidenhead 005C2,16050.5 per 1,000598.4%
Windsor and Maidenhead 005D1,92995.1 per 1,000757.9%
Windsor and Maidenhead 005E2,34844.9 per 1,000899.7%
Windsor and Maidenhead 005G1,335136.7 per 1,000580.5%
Windsor and Maidenhead 005H1,802471.4 per 1,000573.1%
Windsor and Maidenhead 006A1,82125.6 per 1,0001095.7%
Windsor and Maidenhead 006B1,61429.8 per 1,0001099.1%
Windsor and Maidenhead 006C1,63736.9 per 1,0001093.5%
Windsor and Maidenhead 006D1,42413.8 per 1,0001099.8%
Windsor and Maidenhead 006E1,64745.6 per 1,0001099.4%
Windsor and Maidenhead 006F1,65731.7 per 1,0001096.6%
Windsor and Maidenhead 007A1,35042.1 per 1,0001080.6%
Windsor and Maidenhead 007B1,81930.7 per 1,000897.5%
Windsor and Maidenhead 007C1,60353.9 per 1,000994.6%
Windsor and Maidenhead 007D1,82479.4 per 1,000493.5%
Windsor and Maidenhead 007E1,58878.3 per 1,000696.3%
Windsor and Maidenhead 008A1,49025.5 per 1,00010100.0%
Windsor and Maidenhead 008B1,56076.0 per 1,000599.2%
Windsor and Maidenhead 008C1,81532.2 per 1,00010100.0%
Windsor and Maidenhead 008D1,37322.0 per 1,0001096.5%
Windsor and Maidenhead 008E1,37134.7 per 1,0001095.3%
Windsor and Maidenhead 008F1,55446.4 per 1,000570.5%
Windsor and Maidenhead 009A1,61131.3 per 1,000926.9%
Windsor and Maidenhead 009B1,61658.1 per 1,000980.1%
Windsor and Maidenhead 009C1,34415.2 per 1,0001074.4%
Windsor and Maidenhead 009D1,22643.6 per 1,000780.6%
Windsor and Maidenhead 009E1,94639.8 per 1,000855.3%

MPs for SL6

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

Middle areas in SL69

Postcode sectors in SL610

Council1

Towns in SL62

Postcode districts next to SL69

Nearest rail stations3

More in the SL postcode area2

SL6 in brief

SL6 is a postcode district covering Maidenhead and Boyn Hill, in Windsor and Maidenhead.

About 86,796 people lived in SL6 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £510,000 in 2025 across 1,217 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 59.0 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in SL6 was £510,000 in 2025.

SL6 had 83,062 usual residents at the census.

About 91% of people in SL6 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In SL6, 84.6% of homes and businesses could get gigabit-capable broadband in January 2026.