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CM6

Postcode district

Postcode district covering Great Dunmow, in Uttlesford.

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 CM6 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 0% of people in CM6 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£465,000
Joint 373rd most expensive of 2,235
Worked out by Open Index
Population
29,394
954th most populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
0%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
87.2%
UK 87.8%
Ofcom · Jan 2026

How CM6 compares

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

CM6Middle
Median sale price25 postcode districts, CM · 2025
Median sale price: every postcode district in CM25 areas from £315,000 to £690,000. The middle area is £437,500. CM6 is £465,000.
£465,000joint 9th most expensive
Population27 postcode districts, CM · 2021
Population: every postcode district in CM27 areas from 318 to 69,073. The middle area is 23,555. CM6 is 29,394.
29,3948th most populated
People in radon Affected Area squares27 postcode districts, CM · 2022
People in radon Affected Area squares: every postcode district in CM27 areas from 0.0% to 75.0%. The middle area is 0.0%. CM6 is 0.0%.
0%joint fewest people in radon Affected Areas
Gigabit broadband coverage27 postcode districts, CM · Jan 2026
Gigabit broadband coverage: every postcode district in CM27 areas from 54.1% to 95.6%. The middle area is 88.2%. CM6 is 87.2%.
87.2%10th lowest

Is CM6 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CM6 at a rate of 50.1 per 1,000 people.

That compares with 77.3 per 1,000 people across the CM postcode area.

In August 2026 alone, 163 cases of crime and anti-social behaviour were recorded in CM6.

In the 12 months to August 2026, the most common types were violence and sexual offences (640), other crime (282) and anti-social behaviour (179).

A year earlier, the recorded crime rate in CM6 was 46.1 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 CM6, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so CM6 has no single figure. Of its 17 neighbourhoods with a rank:
  • Decile 6: 5 neighbourhoods
  • Decile 7: 6 neighbourhoods
  • Decile 8: 2 neighbourhoods
  • Decile 9: 3 neighbourhoods
  • Decile 10 (England’s least deprived 10%): 1 neighbourhood

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

Neighbourhoods in CM6

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Uttlesford 004A1,85443.4 per 1,000782.2%
Uttlesford 004B2,25533.9 per 1,000673.1%
Uttlesford 006D1,73030.4 per 1,000794.7%
Uttlesford 006H1,34145.2 per 1,000892.7%
Uttlesford 006I1,28533.1 per 1,000692.3%
Uttlesford 007B1,91983.3 per 1,000764.0%
Uttlesford 007C1,99963.4 per 1,000887.2%
Uttlesford 007D1,23240.3 per 1,000690.1%
Uttlesford 007E2,28464.0 per 1,0001098.1%
Uttlesford 007F1,58557.8 per 1,000795.6%
Uttlesford 008A1,64626.2 per 1,000796.5%
Uttlesford 008B1,92139.5 per 1,000989.9%
Uttlesford 008D1,59868.4 per 1,000989.0%
Uttlesford 008E1,72644.5 per 1,000792.7%
Uttlesford 008F1,93556.2 per 1,000688.8%
Uttlesford 008G2,21049.9 per 1,000997.3%
Uttlesford 009D2,09443.9 per 1,000688.4%

MPs for CM6

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 CM62

Postcode sectors in CM65

Council1

Towns in CM61

Postcode districts next to CM610

More in the CM postcode area2

CM6 in brief

CM6 is a postcode district covering Great Dunmow, in Uttlesford.

About 30,658 people lived in CM6 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £465,000 in 2025 across 616 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 50.1 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in CM6 was £465,000 in 2025.

CM6 had 29,394 usual residents at the census.

About 0% of people in CM6 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In CM6, 87.2% of homes and businesses could get gigabit-capable broadband in January 2026.