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CO12 3LL

Harwich & Kingsway · Tendring · England

Updated September 2026

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Location overview

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Post town
Harwich
Ward
Harwich & Kingsway
Local authority
Tendring
Constituency
Harwich and North Essex
Postcode district
CO12
Postcode sector
CO12 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
CO12 3JY 42 m
CO12 3JT 57 m
CO12 3JX 74 m
CO12 3RA 86 m
CO12 3JR 95 m
Complete postcode fields and official codes
Postcode
CO12 3LL
Status
Current
Introduced
1 September 2011
Terminated
Not published
Postcode area
CO
Postcode district
CO12
Postcode sector
CO12 3
Latitude
51.935870
Longitude
1.281668
British National Grid easting
625,682
British National Grid northing
231,460

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Tendring · E07000076
Electoral ward
Harwich & Kingsway · E05011945
Parish or community
E04004099
Westminster constituency
Harwich and North Essex · E14001273
Output area
E00111758
Lower layer super output area
Tendring 001D · E01022001
Middle layer super output area
Tendring 001 · E02004573

Postcode source versions

Explore CO12

Property

View all property records
11 recorded sales at this postcode
Address Date Price
Alexandra Court, 12, Apartment 3, Marine Parade, Dovercourt, Harwich, CO12 3LL 16 December 2024 £194,500
Alexandra Court, 12, Apartment 10, Marine Parade, Dovercourt, Harwich, CO12 3LL 16 July 2021 £159,950
Alexandra Court, 12, Apartment 12, Marine Parade, Dovercourt, Harwich, CO12 3LL 8 December 2020 £119,950

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
11
Primary
10
Secondary
1

  1. Harwich Community Primary School and Nursery

    Community school

    569 m

  2. The Mayflower Primary School

    Community school

    760 m

  3. St Joseph's Catholic Primary School

    Academy converter

    1.1 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
1,316
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 639
  • Criminal damage and arson 137
  • Shoplifting 133
  • Anti social behaviour 116
  • Other theft 80

Census 2021

Population and age profile

Postcode residents
7

5 female, 2 male

Postcode households
9
Residents per household
0.8
CO12 3 residents
7,635

Age bands in CO12 3

Wider postcode sector
Age 0 to 14
15.9%

1,191 residents

Age 15 to 24
11.3%

842 residents

Age 25 to 44
21.2%

1,581 residents

Age 45 to 64
27.3%

2,038 residents

Age 65 and over
24.4%

1,821 residents

This postcode contained 0.1% of the sector's usual residents on Census Day. The age profile describes the wider CO12 3 sector, not people in this individual postcode.

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

3

within 5 km

  • FRONKS RD FAMILY SURGERY

    77 FRONKS ROAD, DOVERCOURT, HARWICH, CO12 3RS

    ODS code F81221

    728 m

  • MAYFLOWER MEDICAL CENTRE

    419 MAIN ROAD, HARWICH, CO12 4EX

    ODS code F81019

    1.5 km

  • HAVEN HEALTH

    GRANGE FARM AVENUE, FELIXSTOWE, IP11 2XD

    ODS code D83081

    4.5 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

  • Cliff Road

    BCT · Dovercourt

    0.1 miles

  • High Street

    BCT · Dovercourt

    0.1 miles

  • Cliff Road

    BCT · Dovercourt

    0.1 miles

  • High Street

    BCT · Dovercourt

    0.1 miles

  • Station Rd

    BCT · Dovercourt

    0.1 miles

Relative deprivation

English Indices of Deprivation 2025 for Tendring 001D, 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

1 of 10

Overall England rank

1,709 of 33,755

Income
2 of 10
Employment
1 of 10
Education and skills
1 of 10
Health and disability
1 of 10
Crime
1 of 10
Housing and services
2 of 10
Living environment
1 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
0
Low risk addresses
0
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 £194,500 from 1 recorded sale in CO12 3LL. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Tendring is £261,717 in June 2026, up 2.6% year on year.

Schools

11 open schools are in scope, including 10 primary and 1 secondary schools. Harwich Community Primary School and Nursery is the nearest published school at 569 m.

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

Recorded crime

1,316 published events cover 12 months, averaging 109.667 events per published month. The largest recorded category is Violence and sexual offences with 639 events.

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