# CM12

Postcode district covering Billericay, Queen's Park and Gooseberry Green, in Basildon.

CM12 is a postcode district covering Billericay, Queen's Park and Gooseberry Green, in Basildon. Median sale price £500,000 in 2025.

Postcode district. Code CM12. 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 CM12 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £500,000** (2025). The median price paid for a home in CM12 was £500,000 in 2025. Joint 275th 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/cm12#f-house-sales-median-price
- **Population: 20,043** (2021). CM12 had 20,043 usual residents at the census (ONS Census 2021). 1,297th least 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/cm12#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in CM12 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/cm12#f-radon-affected-share
- **Gigabit broadband coverage: 89.0%** (January 2026). In CM12, 89.0% 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/cm12#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=CM12) (Worked out by Open Index · 2022): About 0% of people in CM12 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=CM12) (Worked out by Open Index · 2025): 362 homes were sold in CM12 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=CM12) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for CM12.
- [Population by postcode district](https://openindex.co.uk/map/population?place=CM12) (Census 2021, England and Wales): CM12 had 20,043 usual residents at the census.

## How CM12 compares

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

| Measure | CM12 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £500,000 | 5th most expensive | 25 postcode districts, CM · 2025 |
| Population | 20,043 | 11th least 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 | 89.0% | 13th highest | 27 postcode districts, CM · Jan 2026 |

## Is CM12 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CM12 at a rate of 55.0 per 1,000 people.
That compares with 77.3 per 1,000 people across the CM postcode area.
In August 2026 alone, 85 cases of crime and anti-social behaviour were recorded in CM12.
In the 12 months to August 2026, the most common types were violence and sexual offences (381), shoplifting (207) and other crime (182).
A year earlier, the recorded crime rate in CM12 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 CM12, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so CM12 has no single figure. Of its 13 neighbourhoods with a rank:
- Decile 3: 1 neighbourhood
- Decile 9: 2 neighbourhoods
- Decile 10 (England’s least deprived 10%): 10 neighbourhoods

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

## Neighbourhoods in CM12

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Basildon 001D](https://openindex.co.uk/basildon/neighbourhood/e01021250) | 1,553 | 34.6 per 1,000 | 10 | 90.9% |
| [Basildon 001E](https://openindex.co.uk/basildon/neighbourhood/e01021251) | 1,576 | 14.0 per 1,000 | 10 | 96.8% |
| [Basildon 002A](https://openindex.co.uk/basildon/neighbourhood/e01021245) | 1,456 | 81.1 per 1,000 | 3 | 94.2% |
| [Basildon 002B](https://openindex.co.uk/basildon/neighbourhood/e01021246) | 1,452 | 40.0 per 1,000 | 10 | 85.3% |
| [Basildon 002C](https://openindex.co.uk/basildon/neighbourhood/e01021248) | 1,508 | 44.9 per 1,000 | 10 | 97.3% |
| [Basildon 002D](https://openindex.co.uk/basildon/neighbourhood/e01021249) | 1,547 | 23.5 per 1,000 | 10 | 98.3% |
| [Basildon 002E](https://openindex.co.uk/basildon/neighbourhood/e01021252) | 1,381 | 26.0 per 1,000 | 9 | 86.4% |
| [Basildon 003E](https://openindex.co.uk/basildon/neighbourhood/e01021247) | 1,499 | 155.9 per 1,000 | 10 | 91.4% |
| [Basildon 004A](https://openindex.co.uk/basildon/neighbourhood/e01021244) | 1,545 | 92.1 per 1,000 | 10 | 86.5% |
| [Basildon 004B](https://openindex.co.uk/basildon/neighbourhood/e01021253) | 1,769 | 49.6 per 1,000 | 10 | 93.0% |
| [Basildon 004C](https://openindex.co.uk/basildon/neighbourhood/e01021255) | 1,537 | 73.2 per 1,000 | 10 | 90.7% |
| [Basildon 004D](https://openindex.co.uk/basildon/neighbourhood/e01021256) | 1,501 | 8.6 per 1,000 | 10 | 99.2% |
| [Basildon 009A](https://openindex.co.uk/basildon/neighbourhood/e01021254) | 1,502 | 30.1 per 1,000 | 9 | 78.0% |

## Your MP

- [Basildon and Billericay](https://openindex.co.uk/constituency/basildon-and-billericay): Mr Richard Holden (Conservative), MP since July 2024. 100% of the people here.
- [Brentwood and Ongar](https://openindex.co.uk/constituency/brentwood-and-ongar): Alex Burghart (Conservative), MP since July 2024. 0.4% 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 CM12

[Billericay Queen's Park](https://openindex.co.uk/basildon/billericay-queens-park), [Billericay Tye Common](https://openindex.co.uk/basildon/billericay-tye-common)

## Postcode sectors in CM12

[CM12 0 (266 postcodes)](https://openindex.co.uk/postcode/cm12-0), [CM12 2 (15 postcodes)](https://openindex.co.uk/postcode/cm12-2), [CM12 9 (226 postcodes)](https://openindex.co.uk/postcode/cm12-9)

## Council

[Basildon](https://openindex.co.uk/basildon)

## Towns in CM12

[Billericay](https://openindex.co.uk/town/billericay)

## Postcode districts next to CM12

[CM4](https://openindex.co.uk/postcode/cm4), [CM11](https://openindex.co.uk/postcode/cm11), [CM13](https://openindex.co.uk/postcode/cm13), [SS15](https://openindex.co.uk/postcode/ss15)

## Nearest rail stations

[Billericay (2.5 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.4186,51.6289), [Laindon (5.0 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.4243,51.5675), [Shenfield (5.4 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.3298,51.6309)

## 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)

## CM12 in brief

CM12 is a postcode district covering Billericay, Queen's Park and Gooseberry Green, in Basildon.
About 20,185 people lived in CM12 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £500,000 in 2025 across 362 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 55.0 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CM12 was £500,000 in 2025.
CM12 had 20,043 usual residents at the census.
About 0% of people in CM12 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In CM12, 89.0% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: CM12
- Postcode area: [CM](https://openindex.co.uk/postcode/cm)
- Constituency: [Basildon and Billericay †](https://openindex.co.uk/constituency/basildon-and-billericay)
- Council: [Basildon †](https://openindex.co.uk/basildon)
- Area: 19.79 km²
- People, mid-2024: 20,185*
- Neighbourhoods: 13
- Output areas: 66

* 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

[CM13](https://openindex.co.uk/postcode/cm13), [CM11](https://openindex.co.uk/postcode/cm11), [SS15](https://openindex.co.uk/postcode/ss15), [CM4](https://openindex.co.uk/postcode/cm4)

## Latest updates for CM12

- 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/CM12

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cm12, or to one figure with its anchor, https://openindex.co.uk/postcode/cm12#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/cm12