CM3
Postcode districtPostcode district covering South Woodham Ferrers, in Chelmsford, Maldon and Braintree.
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 CM3 postcode. How census figures are added up
Radon Affected Area by postcode district
Worked out by Open Index · 2022
About 0% of people in CM3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
How CM3 compares
Each dot is a postcode district. The black line marks the middle one.
Is CM3 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CM3 at a rate of 52.3 per 1,000 people.
That compares with 77.3 per 1,000 people across the CM postcode area.
In August 2026 alone, 303 cases of crime and anti-social behaviour were recorded in CM3.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,280), other crime (499) and anti-social behaviour (326).
A year earlier, the recorded crime rate in CM3 was 44.7 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 CM3, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so CM3 has no single figure. Of its 33 neighbourhoods with a rank:
- Decile 4: 3 neighbourhoods
- Decile 5: 5 neighbourhoods
- Decile 6: 8 neighbourhoods
- Decile 7: 5 neighbourhoods
- Decile 8: 6 neighbourhoods
- Decile 9: 5 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 CM3
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Braintree 018A | 1,588 | 53.0 per 1,000 | 6 | 95.4% |
| Braintree 018B | 1,442 | 102.0 per 1,000 | 5 | 90.6% |
| Braintree 018C | 1,489 | 46.8 per 1,000 | 8 | 98.3% |
| Braintree 018D | 1,370 | 27.3 per 1,000 | 7 | 83.0% |
| Chelmsford 001A | 2,966 | 59.2 per 1,000 | 6 | 80.6% |
| Chelmsford 001B | 1,373 | 36.2 per 1,000 | 5 | 87.7% |
| Chelmsford 001C | 2,193 | 63.5 per 1,000 | 5 | 87.9% |
| Chelmsford 005A | 1,591 | 76.9 per 1,000 | 4 | 89.2% |
| Chelmsford 005B | 2,382 | 90.2 per 1,000 | 8 | 93.4% |
| Chelmsford 005D | 1,600 | 36.5 per 1,000 | 8 | 32.6% |
| Chelmsford 016A | 2,278 | 36.0 per 1,000 | 7 | 99.2% |
| Chelmsford 016B | 1,770 | 47.2 per 1,000 | 5 | 31.6% |
| Chelmsford 016C | 1,741 | 26.6 per 1,000 | 10 | 71.9% |
| Chelmsford 016D | 1,940 | 46.6 per 1,000 | 9 | 29.3% |
| Chelmsford 016E | 1,517 | 65.9 per 1,000 | 4 | 6.9% |
| Chelmsford 019A | 1,406 | 27.0 per 1,000 | 9 | 75.1% |
| Chelmsford 019B | 1,457 | 26.0 per 1,000 | 9 | 94.3% |
| Chelmsford 019C | 1,866 | 125.5 per 1,000 | 6 | 73.9% |
| Chelmsford 019D | 1,767 | 141.2 per 1,000 | 8 | 85.0% |
| Chelmsford 019E | 1,521 | 25.6 per 1,000 | 8 | 98.4% |
| Chelmsford 020A | 1,177 | 15.8 per 1,000 | 9 | 99.4% |
| Chelmsford 020B | 1,620 | 40.1 per 1,000 | 6 | 98.6% |
| Chelmsford 020C | 1,469 | 29.0 per 1,000 | 7 | 94.9% |
| Chelmsford 020D | 1,129 | 31.3 per 1,000 | 6 | 75.1% |
| Chelmsford 020E | 1,352 | 12.4 per 1,000 | 9 | 98.7% |
| Chelmsford 020F | 1,262 | 30.4 per 1,000 | 7 | 92.8% |
| Maldon 007A | 1,346 | 45.3 per 1,000 | 6 | 99.7% |
| Maldon 007B | 1,510 | 72.9 per 1,000 | 4 | 96.4% |
| Maldon 007C | 1,481 | 33.6 per 1,000 | 6 | 59.3% |
| Maldon 007D | 1,399 | 21.1 per 1,000 | 7 | 98.1% |
| Maldon 007E | 1,128 | 50.0 per 1,000 | 5 | 84.9% |
| Maldon 007F | 1,872 | 28.1 per 1,000 | 8 | 91.0% |
| Maldon 007G | 1,652 | 31.3 per 1,000 | 6 | 87.2% |
MPs for CM3
- Sir John WhittingdaleConservativeMP for Maldon58% of CM3’s postcodes
- Mrs Kemi BadenochConservativeMP for North West Essex25% of CM3’s postcodes
- Priti PatelConservativeMP for Witham15% of CM3’s postcodes
- Sir James CleverlyConservativeMP for Braintree1.2% of CM3’s postcodes
- Marie GoldmanLiberal DemocratMP for Chelmsford0.3% of CM3’s postcodes
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 CM37
Postcode sectors in CM39
Councils CM3 covers3
Towns in CM31
Postcode districts next to CM312
More in the CM postcode area2
CM3 in brief
CM3 is a postcode district covering South Woodham Ferrers, in Chelmsford, Maldon and Braintree.
About 58,636 people lived in CM3 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 866 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 52.3 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CM3 was £465,000 in 2025.
CM3 had 56,315 usual residents at the census.
About 0% of people in CM3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In CM3, 80.3% of homes and businesses could get gigabit-capable broadband in January 2026.