# CO3

Postcode district covering Colchester, Lexden and Stanway, in Colchester.

CO3 is a postcode district covering Colchester, Lexden and Stanway, in Colchester. Median sale price £360,000 in 2025. Recorded crime 81.2 per 1,000 people.

Postcode district. Code CO3. In: [Postcodes](https://openindex.co.uk/postcode) › [CO](https://openindex.co.uk/postcode/co)

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 CO3 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £360,000** (2025). The median price paid for a home in CO3 was £360,000 in 2025. Joint 746th 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/co3#f-house-sales-median-price
- **Population: 32,493** (2021). CO3 had 32,493 usual residents at the census (ONS Census 2021). 780th 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/co3#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in CO3 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/co3#f-radon-affected-share
- **Gigabit broadband coverage: 93.1%** (January 2026). In CO3, 93.1% 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/co3#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=CO3) (Worked out by Open Index · 2022): About 0% of people in CO3 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=CO3) (Worked out by Open Index · 2025): 551 homes were sold in CO3 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=CO3) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for CO3.
- [Population by postcode district](https://openindex.co.uk/map/population?place=CO3) (Census 2021, England and Wales): CO3 had 32,493 usual residents at the census.

## How CO3 compares

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

| Measure | CO3 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £360,000 | 5th most expensive | 16 postcode districts, CO · 2025 |
| Population | 32,493 | 6th most populated | 16 postcode districts, CO · 2021 |
| People in radon Affected Area squares | 0% | joint fewest people in radon Affected Areas | 16 postcode districts, CO · 2022 |
| Gigabit broadband coverage | 93.1% | 2nd highest | 16 postcode districts, CO · Jan 2026 |

## Is CO3 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CO3 at a rate of 81.2 per 1,000 people.
That compares with 83.5 per 1,000 people across the CO postcode area.
In August 2026 alone, 265 cases of crime and anti-social behaviour were recorded in CO3.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,109), other crime (508) and anti-social behaviour (327).
A year earlier, the recorded crime rate in CO3 was 66.3 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 CO3, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so CO3 has no single figure. Of its 20 neighbourhoods with a rank:
- Decile 4: 1 neighbourhood
- Decile 5: 2 neighbourhoods
- Decile 6: 2 neighbourhoods
- Decile 7: 3 neighbourhoods
- Decile 8: 3 neighbourhoods
- Decile 9: 5 neighbourhoods
- Decile 10 (England’s least deprived 10%): 4 neighbourhoods

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

## Neighbourhoods in CO3

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Colchester 003D](https://openindex.co.uk/colchester/neighbourhood/e01021730) | 1,769 | 54.9 per 1,000 | 7 | 97.4% |
| [Colchester 007A](https://openindex.co.uk/colchester/neighbourhood/e01021646) | 2,122 | 136.6 per 1,000 | 8 | 73.5% |
| [Colchester 009A](https://openindex.co.uk/colchester/neighbourhood/e01021673) | 1,442 | 32.6 per 1,000 | 10 | 94.7% |
| [Colchester 009B](https://openindex.co.uk/colchester/neighbourhood/e01021674) | 1,408 | 103.5 per 1,000 | 4 | 92.5% |
| [Colchester 009C](https://openindex.co.uk/colchester/neighbourhood/e01021675) | 1,345 | 41.6 per 1,000 | 9 | 96.6% |
| [Colchester 009D](https://openindex.co.uk/colchester/neighbourhood/e01021676) | 1,629 | 49.5 per 1,000 | 9 | 92.2% |
| [Colchester 010F](https://openindex.co.uk/colchester/neighbourhood/e01035159) | 2,686 | 118.1 per 1,000 | 7 | 84.3% |
| [Colchester 012A](https://openindex.co.uk/colchester/neighbourhood/e01021718) | 1,868 | 162.5 per 1,000 | 6 | 96.3% |
| [Colchester 012B](https://openindex.co.uk/colchester/neighbourhood/e01021719) | 1,597 | 61.6 per 1,000 | 8 | 97.0% |
| [Colchester 012C](https://openindex.co.uk/colchester/neighbourhood/e01021720) | 1,612 | 79.9 per 1,000 | 5 | 100.0% |
| [Colchester 012D](https://openindex.co.uk/colchester/neighbourhood/e01021721) | 1,978 | 67.7 per 1,000 | 8 | 82.7% |
| [Colchester 012E](https://openindex.co.uk/colchester/neighbourhood/e01021722) | 2,557 | 59.1 per 1,000 | 7 | 93.2% |
| [Colchester 013A](https://openindex.co.uk/colchester/neighbourhood/e01021651) | 2,443 | 224.2 per 1,000 | 6 | 85.7% |
| [Colchester 013B](https://openindex.co.uk/colchester/neighbourhood/e01021652) | 1,570 | 28.8 per 1,000 | 9 | 98.8% |
| [Colchester 013C](https://openindex.co.uk/colchester/neighbourhood/e01021653) | 1,330 | 63.1 per 1,000 | 10 | 98.0% |
| [Colchester 014A](https://openindex.co.uk/colchester/neighbourhood/e01021689) | 1,505 | 74.2 per 1,000 | 5 | 98.4% |
| [Colchester 014B](https://openindex.co.uk/colchester/neighbourhood/e01021690) | 1,304 | 18.0 per 1,000 | 9 | 97.7% |
| [Colchester 014C](https://openindex.co.uk/colchester/neighbourhood/e01021691) | 1,559 | 38.9 per 1,000 | 9 | 93.7% |
| [Colchester 014D](https://openindex.co.uk/colchester/neighbourhood/e01021692) | 1,424 | 59.2 per 1,000 | 10 | 99.2% |
| [Colchester 014E](https://openindex.co.uk/colchester/neighbourhood/e01021693) | 1,706 | 72.9 per 1,000 | 10 | 96.4% |

## Your MP

- [Colchester](https://openindex.co.uk/constituency/colchester): Pam Cox (Labour), MP since July 2024. 61% of the people here.
- [Witham](https://openindex.co.uk/constituency/witham): Priti Patel (Conservative), MP since July 2024. 35% of the people here.
- [Harwich and North Essex](https://openindex.co.uk/constituency/harwich-and-north-essex): Sir Bernard Jenkin (Conservative), MP since July 2024. 4.5% 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 CO3

[Abbey Field](https://openindex.co.uk/colchester/abbey-field), [Lexden](https://openindex.co.uk/colchester/lexden), [Prettygate & Westlands](https://openindex.co.uk/colchester/prettygate-and-westlands), [Stanway](https://openindex.co.uk/colchester/stanway)

## Postcode sectors in CO3

[CO3 0 (203 postcodes)](https://openindex.co.uk/postcode/co3-0), [CO3 3 (231 postcodes)](https://openindex.co.uk/postcode/co3-3), [CO3 4 (182 postcodes)](https://openindex.co.uk/postcode/co3-4), [CO3 8 (100 postcodes)](https://openindex.co.uk/postcode/co3-8), [CO3 9 (148 postcodes)](https://openindex.co.uk/postcode/co3-9)

## Council

[Colchester](https://openindex.co.uk/colchester)

## Towns in CO3

[Colchester](https://openindex.co.uk/town/colchester)

## Postcode districts next to CO3

[CO1](https://openindex.co.uk/postcode/co1), [CO2](https://openindex.co.uk/postcode/co2), [CO4](https://openindex.co.uk/postcode/co4), [CO6](https://openindex.co.uk/postcode/co6)

## Nearest rail stations

[Marks Tey (3.5 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.7833,51.8809), [Colchester (4.7 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.8926,51.9007), [Colchester Town (4.9 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.9048,51.8865)

## More in the CO postcode area

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

## CO3 in brief

CO3 is a postcode district covering Colchester, Lexden and Stanway, in Colchester.
About 33,671 people lived in CO3 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £360,000 in 2025 across 551 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 81.2 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CO3 was £360,000 in 2025.
CO3 had 32,493 usual residents at the census.
About 0% of people in CO3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In CO3, 93.1% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: CO3
- Postcode area: [CO](https://openindex.co.uk/postcode/co)
- Constituency: [Colchester †](https://openindex.co.uk/constituency/colchester)
- Council: [Colchester †](https://openindex.co.uk/colchester)
- Area: 24.35 km²
- People, mid-2024: 33,671*
- Neighbourhoods: 20
- Output areas: 107

* 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

[CO6](https://openindex.co.uk/postcode/co6), [CO2](https://openindex.co.uk/postcode/co2), [CO1](https://openindex.co.uk/postcode/co1), [CO4](https://openindex.co.uk/postcode/co4)

## Latest updates for CO3

- 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/CO3

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/co3, or to one figure with its anchor, https://openindex.co.uk/postcode/co3#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/co3