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MK18

Postcode district

Postcode district covering Winslow and Buckingham, in Buckinghamshire.

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 MK18 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 60% of people in MK18 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£393,500
624th most expensive of 2,235
Worked out by Open Index
Population
34,367
685th most populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
60%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
90.7%
UK 87.8%
Ofcom · Jan 2026

How MK18 compares

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

MK18Middle
Median sale price25 postcode districts, MK · 2025
Median sale price: every postcode district in MK25 areas from £232,500 to £472,000. The middle area is £350,000. MK18 is £393,500.
£393,5008th most expensive
Population27 postcode districts, MK · 2021
Population: every postcode district in MK27 areas from 251 to 56,180. The middle area is 18,995. MK18 is 34,367.
34,3676th most populated
People in radon Affected Area squares27 postcode districts, MK · 2022
People in radon Affected Area squares: every postcode district in MK27 areas from 0.0% to 100.0%. The middle area is 9.0%. MK18 is 60.0%.
60%10th most people in radon Affected Areas
Gigabit broadband coverage27 postcode districts, MK · Jan 2026
Gigabit broadband coverage: every postcode district in MK27 areas from 49.8% to 99.2%. The middle area is 96.0%. MK18 is 90.7%.
90.7%9th lowest

Is MK18 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in MK18 at a rate of 46.8 per 1,000 people.

That compares with 87.5 per 1,000 people across the MK postcode area.

In August 2026 alone, 169 cases of crime and anti-social behaviour were recorded in MK18.

In the 12 months to August 2026, the most common types were violence and sexual offences (739), other crime (360) and anti-social behaviour (198).

A year earlier, the recorded crime rate in MK18 was 49.3 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 MK18, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so MK18 has no single figure. Of its 22 neighbourhoods with a rank:
  • Decile 5: 4 neighbourhoods
  • Decile 6: 3 neighbourhoods
  • Decile 7: 6 neighbourhoods
  • Decile 8: 4 neighbourhoods
  • Decile 9: 1 neighbourhood
  • Decile 10 (England’s least deprived 10%): 4 neighbourhoods

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

Neighbourhoods in MK18

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Buckinghamshire 001A1,64413.2 per 1,0001099.0%
Buckinghamshire 001B2,50468.9 per 1,000792.9%
Buckinghamshire 001C1,59923.8 per 1,000569.3%
Buckinghamshire 001D1,41518.7 per 1,000678.0%
Buckinghamshire 001E1,68165.2 per 1,000896.8%
Buckinghamshire 001F1,71371.6 per 1,0001099.3%
Buckinghamshire 002A1,46336.7 per 1,0009100.0%
Buckinghamshire 002B1,432142.6 per 1,000573.2%
Buckinghamshire 002C2,32049.9 per 1,000693.6%
Buckinghamshire 002D1,5358.5 per 1,00010100.0%
Buckinghamshire 004B2,46929.6 per 1,000796.2%
Buckinghamshire 004C1,42336.5 per 1,000599.7%
Buckinghamshire 004D1,66833.2 per 1,000897.5%
Buckinghamshire 004E1,77553.3 per 1,000549.2%
Buckinghamshire 004F1,90542.1 per 1,000888.1%
Buckinghamshire 005A1,40317.7 per 1,000890.6%
Buckinghamshire 005B1,52278.3 per 1,000696.6%
Buckinghamshire 005C1,29223.2 per 1,00010100.0%
Buckinghamshire 005D2,42372.6 per 1,000792.4%
Buckinghamshire 006C1,20636.2 per 1,000760.4%
Buckinghamshire 009B1,30220.9 per 1,000764.0%
Cherwell 011D1,29920.5 per 1,000769.2%

MPs for MK18

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 MK184

Postcode sectors in MK189

Council1

Towns in MK181

Postcode districts next to MK188

More in the MK postcode area2

MK18 in brief

MK18 is a postcode district covering Winslow and Buckingham, in Buckinghamshire.

About 35,863 people lived in MK18 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £393,500 in 2025 across 573 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 46.8 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in MK18 was £393,500 in 2025.

MK18 had 34,367 usual residents at the census.

About 60% of people in MK18 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In MK18, 90.7% of homes and businesses could get gigabit-capable broadband in January 2026.