# CM18

Postcode district covering Harlow, Stewards and Brays Grove, in Harlow.

CM18 is a postcode district covering Harlow, Stewards and Brays Grove, in Harlow. Median sale price £325,000 in 2025. Recorded crime 117.5 per 1,000 people.

Postcode district. Code CM18. 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 CM18 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £325,000** (2025). The median price paid for a home in CM18 was £325,000 in 2025. Joint 924th 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/cm18#f-house-sales-median-price
- **Population: 25,945** (2021). CM18 had 25,945 usual residents at the census (ONS Census 2021). 1,120th 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/cm18#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in CM18 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/cm18#f-radon-affected-share
- **Gigabit broadband coverage: 95.6%** (January 2026). In CM18, 95.6% 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/cm18#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=CM18) (Worked out by Open Index · 2022): About 0% of people in CM18 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=CM18) (Worked out by Open Index · 2025): 295 homes were sold in CM18 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=CM18) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for CM18.
- [Population by postcode district](https://openindex.co.uk/map/population?place=CM18) (Census 2021, England and Wales): CM18 had 25,945 usual residents at the census.

## How CM18 compares

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

| Measure | CM18 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £325,000 | 3rd cheapest | 25 postcode districts, CM · 2025 |
| Population | 25,945 | 9th 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 | 95.6% | highest | 27 postcode districts, CM · Jan 2026 |

## Is CM18 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CM18 at a rate of 117.5 per 1,000 people.
That compares with 77.3 per 1,000 people across the CM postcode area.
In August 2026 alone, 305 cases of crime and anti-social behaviour were recorded in CM18.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,290), other crime (505) and anti-social behaviour (317).
A year earlier, the recorded crime rate in CM18 was 114.3 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 CM18, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so CM18 has no single figure. Of its 16 neighbourhoods with a rank:
- Decile 2: 1 neighbourhood
- Decile 3: 4 neighbourhoods
- Decile 4: 4 neighbourhoods
- Decile 5: 6 neighbourhoods
- Decile 6: 1 neighbourhood

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

## Neighbourhoods in CM18

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Harlow 006A](https://openindex.co.uk/harlow/neighbourhood/e01021819) | 1,673 | 71.5 per 1,000 | 5 | 99.3% |
| [Harlow 006B](https://openindex.co.uk/harlow/neighbourhood/e01021820) | 1,553 | 109.9 per 1,000 | 5 | 99.7% |
| [Harlow 006C](https://openindex.co.uk/harlow/neighbourhood/e01021822) | 1,676 | 69.8 per 1,000 | 5 | 94.9% |
| [Harlow 006D](https://openindex.co.uk/harlow/neighbourhood/e01021823) | 1,870 | 156.5 per 1,000 | 2 | 94.3% |
| [Harlow 006E](https://openindex.co.uk/harlow/neighbourhood/e01021870) | 1,384 | 94.4 per 1,000 | 4 | 99.5% |
| [Harlow 007B](https://openindex.co.uk/harlow/neighbourhood/e01021868) | 1,650 | 302.5 per 1,000 | 4 | 97.4% |
| [Harlow 007C](https://openindex.co.uk/harlow/neighbourhood/e01021869) | 1,399 | 133.1 per 1,000 | 5 | 97.2% |
| [Harlow 007D](https://openindex.co.uk/harlow/neighbourhood/e01021871) | 1,509 | 57.1 per 1,000 | 3 | 99.1% |
| [Harlow 008A](https://openindex.co.uk/harlow/neighbourhood/e01021821) | 1,433 | 99.8 per 1,000 | 3 | 96.5% |
| [Harlow 008E](https://openindex.co.uk/harlow/neighbourhood/e01021837) | 1,531 | 36.1 per 1,000 | 5 | 91.5% |
| [Harlow 010A](https://openindex.co.uk/harlow/neighbourhood/e01021838) | 1,509 | 46.3 per 1,000 | 6 | 99.0% |
| [Harlow 010B](https://openindex.co.uk/harlow/neighbourhood/e01021858) | 1,650 | 103.9 per 1,000 | 4 | 96.6% |
| [Harlow 010C](https://openindex.co.uk/harlow/neighbourhood/e01021859) | 1,629 | 180.6 per 1,000 | 3 | 89.7% |
| [Harlow 010D](https://openindex.co.uk/harlow/neighbourhood/e01021860) | 1,602 | 163.3 per 1,000 | 3 | 94.9% |
| [Harlow 010E](https://openindex.co.uk/harlow/neighbourhood/e01021861) | 1,456 | 74.8 per 1,000 | 5 | 82.4% |
| [Harlow 011A](https://openindex.co.uk/harlow/neighbourhood/e01021862) | 1,582 | 110.3 per 1,000 | 4 | 98.8% |

## Your MP

- [Harlow](https://openindex.co.uk/constituency/harlow): Chris Vince (Labour (Co-op)), MP since July 2024. 100% of the people here.
- [Epping Forest](https://openindex.co.uk/constituency/epping-forest): Dr Neil Hudson (Conservative), MP since July 2024. 0.5% 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 CM18

[Bush Fair & Brays Grove](https://openindex.co.uk/harlow/bush-fair-and-brays-grove), [Passmores & The High](https://openindex.co.uk/harlow/passmores-and-the-high), [Staple Tye & Latton Bush](https://openindex.co.uk/harlow/staple-tye-and-latton-bush)

## Postcode sectors in CM18

[CM18 6 (227 postcodes)](https://openindex.co.uk/postcode/cm18-6), [CM18 7 (203 postcodes)](https://openindex.co.uk/postcode/cm18-7)

## Council

[Harlow](https://openindex.co.uk/harlow)

## Towns in CM18

[Harlow](https://openindex.co.uk/harlow)

## Postcode districts next to CM18

[CM17](https://openindex.co.uk/postcode/cm17), [CM19](https://openindex.co.uk/postcode/cm19), [CM20](https://openindex.co.uk/postcode/cm20)

## Nearest rail stations

[Harlow Town (2.8 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.0951,51.7811), [Harlow Mill (4.2 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.1323,51.7904), [Roydon (5.2 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.0362,51.7755)

## 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)

## CM18 in brief

CM18 is a postcode district covering Harlow, Stewards and Brays Grove, in Harlow.
About 26,770 people lived in CM18 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £325,000 in 2025 across 295 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 117.5 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CM18 was £325,000 in 2025.
CM18 had 25,945 usual residents at the census.
About 0% of people in CM18 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In CM18, 95.6% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: CM18
- Postcode area: [CM](https://openindex.co.uk/postcode/cm)
- Constituency: [Harlow †](https://openindex.co.uk/constituency/harlow)
- Council: [Harlow †](https://openindex.co.uk/harlow)
- Area: 5.65 km²
- People, mid-2024: 26,770*
- Neighbourhoods: 16
- Output areas: 82

* 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

[CM17](https://openindex.co.uk/postcode/cm17), [CM19](https://openindex.co.uk/postcode/cm19), [CM20](https://openindex.co.uk/postcode/cm20)

## Latest updates for CM18

- 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/CM18

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cm18, or to one figure with its anchor, https://openindex.co.uk/postcode/cm18#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/cm18