# CM9

Postcode district covering Maldon and Heybridge, in Maldon.

CM9 is a postcode district covering Maldon and Heybridge, in Maldon. Median sale price £382,000 in 2025. Recorded crime 53.1 per 1,000 people.

Postcode district. Code CM9. In: [Postcodes](https://openindex.co.uk/postcode) › [CM](https://openindex.co.uk/postcode/cm)

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 CM9 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £382,000** (2025). The median price paid for a home in CM9 was £382,000 in 2025. Joint 656th most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/postcode/cm9#f-house-sales-median-price
- **Population: 35,767** (2021). CM9 had 35,767 usual residents at the census (ONS Census 2021). 607th most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/cm9#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in CM9 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/cm9#f-radon-affected-share
- **Gigabit broadband coverage: 85.9%** (January 2026). In CM9, 85.9% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/cm9#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=CM9) (Worked out by Open Index · 2022): About 0% of people in CM9 live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Sales per year by postcode district](https://openindex.co.uk/map/house-sales-per-year?place=CM9) (Worked out by Open Index · 2025): 654 homes were sold in CM9 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=CM9) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for CM9.
- [Population by postcode district](https://openindex.co.uk/map/population?place=CM9) (Census 2021, England and Wales): CM9 had 35,767 usual residents at the census.

## How CM9 compares

Each postcode district against every other postcode district the measure covers.

| Measure | CM9 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £382,000 | 8th cheapest | 25 postcode districts, CM · 2025 |
| Population | 35,767 | 6th most populated | 27 postcode districts, CM · 2021 |
| People in radon Affected Area squares | 0% | joint fewest people in radon Affected Areas | 27 postcode districts, CM · 2022 |
| Gigabit broadband coverage | 85.9% | 8th lowest | 27 postcode districts, CM · Jan 2026 |

## Is CM9 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CM9 at a rate of 53.1 per 1,000 people.
That compares with 77.3 per 1,000 people across the CM postcode area.
In August 2026 alone, 209 cases of crime and anti-social behaviour were recorded in CM9.
In the 12 months to August 2026, the most common types were violence and sexual offences (917), other crime (345) and anti-social behaviour (217).
A year earlier, the recorded crime rate in CM9 was 53.6 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 CM9, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so CM9 has no single figure. Of its 22 neighbourhoods with a rank:
- Decile 3: 2 neighbourhoods
- Decile 4: 3 neighbourhoods
- Decile 5: 2 neighbourhoods
- Decile 6: 4 neighbourhoods
- Decile 7: 2 neighbourhoods
- Decile 8: 5 neighbourhoods
- Decile 9: 3 neighbourhoods
- Decile 10 (England’s least deprived 10%): 1 neighbourhood

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

## Neighbourhoods in CM9

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Maldon 001A](https://openindex.co.uk/maldon/neighbourhood/e01021908) | 2,087 | 21.3 per 1,000 | 6 | 90.3% |
| [Maldon 001B](https://openindex.co.uk/maldon/neighbourhood/e01021909) | 1,480 | 33.3 per 1,000 | 5 | 54.7% |
| [Maldon 001C](https://openindex.co.uk/maldon/neighbourhood/e01021910) | 1,628 | 33.4 per 1,000 | 4 | 92.3% |
| [Maldon 001D](https://openindex.co.uk/maldon/neighbourhood/e01021911) | 1,292 | 18.8 per 1,000 | 8 | 60.4% |
| [Maldon 002A](https://openindex.co.uk/maldon/neighbourhood/e01021882) | 2,158 | 28.4 per 1,000 | 7 | 63.2% |
| [Maldon 002B](https://openindex.co.uk/maldon/neighbourhood/e01021883) | 1,704 | 14.0 per 1,000 | 8 | 86.6% |
| [Maldon 002D](https://openindex.co.uk/maldon/neighbourhood/e01021913) | 1,605 | 36.5 per 1,000 | 6 | 88.2% |
| [Maldon 003A](https://openindex.co.uk/maldon/neighbourhood/e01021884) | 1,392 | 29.3 per 1,000 | 6 | 74.9% |
| [Maldon 003B](https://openindex.co.uk/maldon/neighbourhood/e01021885) | 1,115 | 28.7 per 1,000 | 9 | 68.1% |
| [Maldon 003C](https://openindex.co.uk/maldon/neighbourhood/e01021886) | 1,588 | 24.6 per 1,000 | 8 | 65.0% |
| [Maldon 003D](https://openindex.co.uk/maldon/neighbourhood/e01021887) | 2,343 | 51.1 per 1,000 | 9 | 97.6% |
| [Maldon 003E](https://openindex.co.uk/maldon/neighbourhood/e01021888) | 2,467 | 89.7 per 1,000 | 3 | 59.5% |
| [Maldon 004A](https://openindex.co.uk/maldon/neighbourhood/e01021889) | 2,500 | 79.7 per 1,000 | 4 | 99.4% |
| [Maldon 004B](https://openindex.co.uk/maldon/neighbourhood/e01021890) | 1,809 | 177.0 per 1,000 | 4 | 89.7% |
| [Maldon 004C](https://openindex.co.uk/maldon/neighbourhood/e01021891) | 1,518 | 90.3 per 1,000 | 8 | 95.1% |
| [Maldon 004D](https://openindex.co.uk/maldon/neighbourhood/e01021892) | 1,082 | 68.8 per 1,000 | 3 | 95.1% |
| [Maldon 005A](https://openindex.co.uk/maldon/neighbourhood/e01021893) | 1,459 | 21.3 per 1,000 | 10 | 99.7% |
| [Maldon 005B](https://openindex.co.uk/maldon/neighbourhood/e01021894) | 1,227 | 51.2 per 1,000 | 5 | 100.0% |
| [Maldon 005C](https://openindex.co.uk/maldon/neighbourhood/e01021895) | 1,152 | 26.3 per 1,000 | 6 | 95.1% |
| [Maldon 005D](https://openindex.co.uk/maldon/neighbourhood/e01021896) | 1,835 | 83.8 per 1,000 | 8 | 96.7% |
| [Maldon 005E](https://openindex.co.uk/maldon/neighbourhood/e01021897) | 1,083 | 21.8 per 1,000 | 9 | 100.0% |
| [Maldon 005F](https://openindex.co.uk/maldon/neighbourhood/e01021898) | 1,273 | 42.2 per 1,000 | 7 | 98.1% |

## Your MP

- [Maldon](https://openindex.co.uk/constituency/maldon): Sir John Whittingdale (Conservative), MP since July 2024. 60% of the people here.
- [Witham](https://openindex.co.uk/constituency/witham): Priti Patel (Conservative), MP since July 2024. 40% of the people here.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Middle areas in CM9

[Great Totham, Wickham Bishops & Woodham](https://openindex.co.uk/maldon/great-totham-wickham-bishops-and-woodham), [Heybridge](https://openindex.co.uk/maldon/heybridge), [Maldon North](https://openindex.co.uk/maldon/maldon-north), [Maldon South](https://openindex.co.uk/maldon/maldon-south), [Tollesbury, Tolleshunt & Goldhanger](https://openindex.co.uk/maldon/tollesbury-tolleshunt-and-goldhanger)

## Postcode sectors in CM9

[CM9 4 (281 postcodes)](https://openindex.co.uk/postcode/cm9-4), [CM9 5 (124 postcodes)](https://openindex.co.uk/postcode/cm9-5), [CM9 6 (359 postcodes)](https://openindex.co.uk/postcode/cm9-6), [CM9 8 (275 postcodes)](https://openindex.co.uk/postcode/cm9-8), [CM9 9 (33 postcodes)](https://openindex.co.uk/postcode/cm9-9)

## Council

[Maldon](https://openindex.co.uk/maldon)

## Towns in CM9

[Maldon](https://openindex.co.uk/town/maldon)

## Postcode districts next to CM9

[CM3](https://openindex.co.uk/postcode/cm3), [CM8](https://openindex.co.uk/postcode/cm8), [CO5](https://openindex.co.uk/postcode/co5)

## More in the CM postcode area

[All CM postcode districts](https://openindex.co.uk/postcode/cm), [Every UK postcode area](https://openindex.co.uk/postcode)

## CM9 in brief

CM9 is a postcode district covering Maldon and Heybridge, in Maldon.
About 37,131 people lived in CM9 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £382,000 in 2025 across 654 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 53.1 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CM9 was £382,000 in 2025.
CM9 had 35,767 usual residents at the census.
About 0% of people in CM9 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In CM9, 85.9% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: CM9
- Postcode area: [CM](https://openindex.co.uk/postcode/cm)
- Constituency: [Maldon †](https://openindex.co.uk/constituency/maldon)
- Council: [Maldon †](https://openindex.co.uk/maldon)
- Area: 150 km²
- People, mid-2024: 37,131*
- Neighbourhoods: 22
- Output areas: 111

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the constituency, council, region and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[CM3](https://openindex.co.uk/postcode/cm3), [CO5](https://openindex.co.uk/postcode/co5), [CM8](https://openindex.co.uk/postcode/cm8)

## Latest updates for CM9

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/CM9

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cm9, or to one figure with its anchor, https://openindex.co.uk/postcode/cm9#f-house-sales-median-price.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/cm9