# CO1

Postcode district covering Colchester and The Hythe, in Colchester.

CO1 is a postcode district covering Colchester and The Hythe, in Colchester. Median sale price £245,000 in 2025. Recorded crime 203.1 per 1,000 people.

Postcode district. Code CO1. 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 CO1 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £245,000** (2025). The median price paid for a home in CO1 was £245,000 in 2025. Joint 705th cheapest 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/co1#f-house-sales-median-price
- **Population: 18,519** (2021). CO1 had 18,519 usual residents at the census (ONS Census 2021). 1,204th 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/co1#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in CO1 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/co1#f-radon-affected-share
- **Gigabit broadband coverage: 78.5%** (January 2026). In CO1, 78.5% 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/co1#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=CO1) (Worked out by Open Index · 2022): About 0% of people in CO1 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=CO1) (Worked out by Open Index · 2025): 271 homes were sold in CO1 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=CO1) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for CO1.
- [Population by postcode district](https://openindex.co.uk/map/population?place=CO1) (Census 2021, England and Wales): CO1 had 18,519 usual residents at the census.

## How CO1 compares

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

| Measure | CO1 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £245,000 | 2nd cheapest | 16 postcode districts, CO · 2025 |
| Population | 18,519 | 5th least 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 | 78.5% | 8th lowest | 16 postcode districts, CO · Jan 2026 |

## Is CO1 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CO1 at a rate of 203.1 per 1,000 people.
That compares with 83.5 per 1,000 people across the CO postcode area.
In August 2026 alone, 376 cases of crime and anti-social behaviour were recorded in CO1.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,679), other crime (657) and shoplifting (550).
A year earlier, the recorded crime rate in CO1 was 209.1 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 CO1, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so CO1 has no single figure. Of its 10 neighbourhoods with a rank:
- Decile 2: 2 neighbourhoods
- Decile 3: 3 neighbourhoods
- Decile 4: 3 neighbourhoods
- Decile 5: 1 neighbourhood
- Decile 6: 1 neighbourhood

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

## Neighbourhoods in CO1

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Colchester 007B](https://openindex.co.uk/colchester/neighbourhood/e01021647) | 2,318 | 96.3 per 1,000 | 6 | 87.1% |
| [Colchester 007C](https://openindex.co.uk/colchester/neighbourhood/e01021648) | 2,371 | 207.6 per 1,000 | 4 | 76.0% |
| [Colchester 007E](https://openindex.co.uk/colchester/neighbourhood/e01021650) | 2,188 | 163.5 per 1,000 | 5 | 80.5% |
| [Colchester 007F](https://openindex.co.uk/colchester/neighbourhood/e01035157) | 1,194 | 420.0 per 1,000 | 2 | 60.1% |
| [Colchester 007G](https://openindex.co.uk/colchester/neighbourhood/e01035158) | 1,117 | 1,202.5 per 1,000 | 3 | 47.0% |
| [Colchester 011E](https://openindex.co.uk/colchester/neighbourhood/e01021687) | 1,841 | 136.4 per 1,000 | 4 | 97.5% |
| [Colchester 011G](https://openindex.co.uk/colchester/neighbourhood/e01035161) | 1,576 | 188.5 per 1,000 | 2 | 78.5% |
| [Colchester 011H](https://openindex.co.uk/colchester/neighbourhood/e01035162) | 1,309 | 85.2 per 1,000 | 3 | 96.9% |
| [Colchester 011I](https://openindex.co.uk/colchester/neighbourhood/e01035163) | 1,486 | 80.2 per 1,000 | 3 | 96.3% |
| [Colchester 022H](https://openindex.co.uk/colchester/neighbourhood/e01021706) | 1,364 | 91.9 per 1,000 | 4 | 97.7% |

## Your MP

- [Colchester](https://openindex.co.uk/constituency/colchester): Pam Cox (Labour), MP since July 2024. 84% 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. 9.4% of the people here.
- [Witham](https://openindex.co.uk/constituency/witham): Priti Patel (Conservative), MP since July 2024. 6.4% 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 CO1

[Central Colchester](https://openindex.co.uk/colchester/central-colchester), [New Town & Hythe](https://openindex.co.uk/colchester/new-town-and-hythe)

## Postcode sectors in CO1

[CO1 1 (234 postcodes)](https://openindex.co.uk/postcode/co1-1), [CO1 2 (291 postcodes)](https://openindex.co.uk/postcode/co1-2), [CO1 9 (68 postcodes)](https://openindex.co.uk/postcode/co1-9)

## Council

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

## Towns in CO1

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

## Postcode districts next to CO1

[CO2](https://openindex.co.uk/postcode/co2), [CO3](https://openindex.co.uk/postcode/co3), [CO4](https://openindex.co.uk/postcode/co4), [CO5](https://openindex.co.uk/postcode/co5)

## Nearest rail stations

[Colchester Town (800 m from the middle)](https://openindex.co.uk/map/rail-stations?around=0.9048,51.8865), [Colchester (1.1 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.8926,51.9007), [Hythe (Essex) (1.8 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.9275,51.8856), [Wivenhoe (5.4 km from the middle)](https://openindex.co.uk/map/rail-stations?around=0.9561,51.8565)

## 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)

## CO1 in brief

CO1 is a postcode district covering Colchester and The Hythe, in Colchester.
About 19,701 people lived in CO1 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £245,000 in 2025 across 271 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 203.1 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CO1 was £245,000 in 2025.
CO1 had 18,519 usual residents at the census.
About 0% of people in CO1 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In CO1, 78.5% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: CO1
- 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: 4.39 km²
- People, mid-2024: 19,701*
- Neighbourhoods: 10
- 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

[CO4](https://openindex.co.uk/postcode/co4), [CO2](https://openindex.co.uk/postcode/co2), [CO3](https://openindex.co.uk/postcode/co3), [CO5](https://openindex.co.uk/postcode/co5)

## Latest updates for CO1

- 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/CO1

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/co1, or to one figure with its anchor, https://openindex.co.uk/postcode/co1#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/co1