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CO1 1AR

Castle · Colchester · England

Updated September 2026

Compare this postcode

Location overview

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

Nearby postcodes

Nearby postcode distances
Postcode Distance
CO1 1HL 27 m
CO1 1AQ 33 m
CO1 1EY 34 m
CO1 1EW 43 m
CO1 1ES 50 m
Complete postcode fields and official codes
Postcode
CO1 1AR
Status
Terminated
Introduced
1 December 2001
Terminated
1 March 2010
Postcode area
CO
Postcode district
CO1
Postcode sector
CO1 1
Latitude
51.892626
Longitude
0.900059
British National Grid easting
599,647
British National Grid northing
225,537

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
E00109954
Lower layer super output area
Colchester 007F · E01035157
Middle layer super output area
Colchester 007 · E02004512

Postcode source versions

Explore CO1

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
63
Primary
42
Secondary
11

  1. The Sixth Form College Colchester

    Academy 16-19 converter

    409 m

  2. North Primary School and Nursery

    Community school

    515 m

  3. St Thomas More's Catholic Primary School, Colchester

    Academy converter

    695 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
5,685
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 2,447
  • Shoplifting 745
  • Anti social behaviour 456
  • Public order 436
  • Criminal damage and arson 342

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 straight-line

  • BEACON HOUSE MINISTRIES

    24 CROUCH STREET, COLCHESTER, CO3 3ES

    ODS code Y01297

    658 m

  • COLCHESTER MEDICAL PRACTICE

    78 EAST HILL, COLCHESTER, CO1 2QS

    ODS code F81042

    702 m

  • EAST HILL SURGERY

    78 EAST HILL, COLCHESTER, CO1 2RW

    ODS code F81091

    702 m

  • CREFFIELD MEDICAL GROUP

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

    ODS code F81115

    1.3 km

  • TURNER ROAD SURGERY

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

    ODS code Y02646

    1.6 km

  • ABBEY FIELD MEDICAL CENTRE

    YPRES ROAD, COLCHESTER, CO2 7UW

    ODS code F81095

    1.7 km

  • MILL ROAD SURGERY

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

    ODS code F81636

    2.2 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

    2.9 km

  • WINSTREE MEDICAL PRACTICE

    84 WINSTREE ROAD, STANWAY, COLCHESTER, CO3 0PZ

    ODS code F81069

    4.1 km

  • TOLLGATE HEALTH CENTRE

    145 LONDON ROAD, STANWAY, COLCHESTER, CO3 8NZ

    ODS code F81716

    4.9 km

  • ROWHEDGE SURGERY

    7 RECTORY ROAD, ROWHEDGE, COLCHESTER, CO5 7HP

    ODS code F81141

    5.0 km

Nearby transport

  • Middleborough

    BCT · Colchester

    0.2 miles

  • Middleborough

    BCT · Colchester

    0.2 miles

  • Middleborough

    BCT · Colchester

    0.2 miles

  • Angel Court

    BCT · Colchester City Centre

    0.2 miles

  • The George

    BCT · Colchester City Centre

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Colchester 007F, 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

2 of 10

Overall England rank

6,179 of 33,755

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

Evidence in context

Schools

63 open schools are in scope, including 42 primary and 11 secondary schools. The Sixth Form College Colchester is the nearest published school at 409 m.

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

Recorded crime

5,685 published events cover 12 months, averaging 473.75 events per published month. The largest recorded category is Violence and sexual offences with 2,447 events.

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