CO12 3LT

Harwich & Kingsway · Tendring · England

Updated September 2026

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Location overview

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Post town
Harwich
Local authority
Tendring
Postcode district
CO12
Postcode sector
CO12 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
CO12 3BP 67 m
CO12 3LU 67 m
CO12 3LS 82 m
CO12 3LX 94 m
CO12 3NJ 99 m
Complete postcode fields and official codes
Postcode
CO12 3LT
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
CO
Postcode district
CO12
Postcode sector
CO12 3
Latitude
51.942466
Longitude
1.287709
British National Grid easting
626,064
British National Grid northing
232,212

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Tendring · E07000076
Parish or community
E04004099
Westminster constituency
Harwich and North Essex · E14001273
Output area
E00111737
Lower layer super output area
Tendring 001B · E01021998
Middle layer super output area
Tendring 001 · E02004573

Postcode source versions

Explore CO12

Use the wider postcode district to compare the same evidence across more locations.

Property

At this postcode

View all property records
3 recorded sales at this postcode
Address Date Price
17, Main Road, Harwich, CO12 3LT 16 May 2025 £165,000
17, Main Road, Harwich, CO12 3LT 25 June 2021 £165,000
17, Main Road, Harwich, CO12 3LT 10 January 2014 £79,500

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
14
Primary
12
Secondary
2
  1. Harwich Community Primary School and Nursery

    Community school

    380 m
  2. The Mayflower Primary School

    Community school

    1.3 km
  3. St Joseph's Catholic Primary School

    Academy converter

    1.9 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
978
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 482
  • Shoplifting 126
  • Criminal damage and arson 85
  • Anti social behaviour 78
  • Other theft 55

Census 2021

Population and age profile

Postcode residents
22

11 female, 11 male

Postcode households
8
Residents per household
2.8
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 0.3% of the sector's usual residents on Census Day. The age profile describes the wider CO12 3 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

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

Fixed broadband coverage

Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.

Superfast, 30 Mbit/s+
100%
Ultrafast, 100 Mbit/s+
100%
Ultrafast, 300 Mbit/s+
100%
Gigabit-capable
100%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
0%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

4

within 5 km

  • FRONKS RD FAMILY SURGERY

    77 FRONKS ROAD, DOVERCOURT, HARWICH, CO12 3RS

    ODS code F81221

    1.5 km

  • MAYFLOWER MEDICAL CENTRE

    419 MAIN ROAD, HARWICH, CO12 4EX

    ODS code F81019

    2.1 km

  • HAVEN HEALTH

    GRANGE FARM AVENUE, FELIXSTOWE, IP11 2XD

    ODS code D83081

    3.7 km

  • HOWARD HOUSE SURGERY

    31 ORWELL ROAD, FELIXSTOWE, IP11 7DD

    ODS code D83015

    4.8 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Mayflower Avenue

    BCT · Harwich

    0.1 miles
  • Mayflower Avenue

    BCT · Harwich

    0.1 miles
  • DaRT Harwich

    BCT · Harwich

    0.1 miles
  • Harwich Town Rail Station

    RSE · Harwich

    0.1 miles
  • Lighthouse

    BCT · Harwich

    0.1 miles

Relative deprivation

English Indices of Deprivation 2025 for Tendring 001B, 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

2,966 of 33,755

Income
2 of 10
Employment
2 of 10
Education and skills
1 of 10
Health and disability
3 of 10
Crime
2 of 10
Housing and services
1 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
5
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

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £165,000 from 1 recorded sale in CO12 3LT. 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

Published establishments

14 open schools are in scope, including 12 primary and 2 secondary schools. Harwich Community Primary School and Nursery is the nearest published school at 380 m.

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

Recorded crime

Published police records

978 published events cover 12 months, averaging 81.5 events per published month. The largest recorded category is Violence and sexual offences with 482 events.

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