CO1 1RJ

Castle · Colchester · England

Updated September 2026

Compare this postcode

Location overview

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Post town
Colchester
Ward
Castle
Local authority
Colchester
Constituency
Colchester
Postcode district
CO1
Postcode sector
CO1 1

Nearby postcodes

Nearby postcode distances
Postcode Distance
CO1 1RD 75 m
CO1 1EA 83 m
CO1 1RE 92 m
CO1 1RR 97 m
CO1 1RS 97 m
Complete postcode fields and official codes
Postcode
CO1 1RJ
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
CO
Postcode district
CO1
Postcode sector
CO1 1
Latitude
51.894038
Longitude
0.897475
British National Grid easting
599,463
British National Grid northing
225,687

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Colchester · E07000071
Electoral ward
Castle · E05010828
Parish or community
E43000228
Westminster constituency
Colchester · E14001176
Output area
E00109975
Lower layer super output area
Colchester 007E · E01021650
Middle layer super output area
Colchester 007 · E02004512

Postcode source versions

Explore CO1

1 recorded sale at this postcode
Address Date Price
Fairfax House, Causton Road, Colchester, CO1 1RJ 14 February 2022 £7,050,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
63
Primary
42
Secondary
11
  1. North Primary School and Nursery

    Community school

    278 m
  2. The Sixth Form College Colchester

    Academy 16-19 converter

    392 m
  3. Colchester Institute

    Further education

    613 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
5,256
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 2,233
  • Shoplifting 677
  • Anti social behaviour 437
  • Public order 399
  • Other theft 317

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
CO1 1 residents
5,694

Age bands in CO1 1

Wider postcode sector
Age 0 to 14
17%

923 residents

Age 15 to 24
9.8%

533 residents

Age 25 to 44
38.8%

2,110 residents

Age 45 to 64
21.2%

1,150 residents

Age 65 and over
13.2%

717 residents

Small counts are adjusted for privacy, so totals can differ slightly between Census tables.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

GP practices

12

within 5 km

  • BEACON HOUSE MINISTRIES

    24 CROUCH STREET, COLCHESTER, CO3 3ES

    ODS code Y01297

    737 m

  • COLCHESTER MEDICAL PRACTICE

    78 EAST HILL, COLCHESTER, CO1 2QS

    ODS code F81042

    931 m

  • EAST HILL SURGERY

    78 EAST HILL, COLCHESTER, CO1 2RW

    ODS code F81091

    931 m

  • CREFFIELD MEDICAL GROUP

    CREFFIELD MEDICAL CENTRE, 15 CAVALRY ROAD, COLCHESTER, CO2 7GH

    ODS code F81115

    1.4 km

  • TURNER ROAD SURGERY

    THE PRIMARY CARE CENTRE, TURNER ROAD, COLCHESTER, CO4 5JR

    ODS code Y02646

    1.5 km

  • ABBEY FIELD MEDICAL CENTRE

    YPRES ROAD, COLCHESTER, CO2 7UW

    ODS code F81095

    1.8 km

  • MILL ROAD SURGERY

    47 MILL ROAD, MILE END, COLCHESTER, CO4 5LE

    ODS code F81636

    2.0 km

  • HIGHWOODS SURGERY

    HIGHWOODS SQUARE, HIGHWOODS, COLCHESTER, CO4 9SR

    ODS code F81679

    2.4 km

  • AMBROSE AVENUE GROUP PRACTICE

    76 AMBROSE AVENUE, COLCHESTER, CO3 4LN

    ODS code F81067

    2.8 km

  • BLUEBELL SURGERY

    BLUEBELL RESOURCE CENTRE, JACK ANDREWS DRIVE, HIGHWOODS, COLCHESTER, CO4 9YN

    ODS code F81746

    3.0 km

  • WINSTREE MEDICAL PRACTICE

    84 WINSTREE ROAD, STANWAY, COLCHESTER, CO3 0PZ

    ODS code F81069

    4.0 km

  • TOLLGATE HEALTH CENTRE

    145 LONDON ROAD, STANWAY, COLCHESTER, CO3 8NZ

    ODS code F81716

    4.7 km

Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.

Source acquired on 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Causton Road

    BCT · Colchester

    0.1 miles
  • Middleborough

    BCT · Colchester

    0.1 miles
  • Middleborough

    BCT · Colchester

    0.1 miles
  • Middleborough

    BCT · Colchester

    0.1 miles
  • Causton Road

    BCT · Colchester

    0.1 miles

Relative deprivation

English Indices of Deprivation 2025 for Colchester 007E, the published LSOA linked to this postcode. Decile 1 contains the most deprived 10% of English LSOAs and decile 10 the least deprived 10%.

Overall IMD decile

5 of 10

Overall England rank

15,810 of 33,755

Income
5 of 10
Employment
5 of 10
Education and skills
6 of 10
Health and disability
5 of 10
Crime
2 of 10
Housing and services
8 of 10
Living environment
4 of 10

These are relative area statistics, not measures of an individual household, affluence or absolute change. They cannot be compared with indices for other UK nations. Source: English Indices of Deprivation 2025, version 2025-v2.

Flood risk

Environment Agency long-term indicators for the area around addresses in this postcode. They are not an assessment of any individual property and do not show current or forecast flooding.

High risk addresses
0
Medium risk addresses
3
Low risk addresses
2
Groundwater flood alert area
Unlikely

Source: Environment Agency flood-risk postcode search tool data, version 2026-06-18. Check the long-term risk for an individual area. © Environment Agency copyright and/or database right 2025. All rights reserved.

Evidence in context

Property market

The five-year median is £7,050,000 from 1 recorded sale in CO1 1RJ. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Colchester is £298,003 in June 2026, down 0.3% year on year.

Schools

63 open schools are in scope, including 42 primary and 11 secondary schools. North Primary School and Nursery is the nearest published school at 278 m.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

5,256 published events cover 12 months, averaging 438 events per published month. The largest recorded category is Violence and sexual offences with 2,233 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.