CO12 postcode district
CO12 holds 644 live postcodes around Harwich, in Tendring.
Towns and villages with their centre in CO12
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Harwich | Essex | 20,723 |
| 2 | Dovercourt | Essex | 1,001 |
| 3 | Great Oakley | Essex | 702 |
Wards
| Name | Share of postcodes |
|---|---|
| Dovercourt All Saints | 22% |
| Harwich & Kingsway | 22% |
| The Oakleys & Wix | 12% |
| Dovercourt Tollgate | 12% |
| Dovercourt Bay | 11% |
| Dovercourt Vines & Parkeston | 11% |
| Stour Valley | 9% |
| "Thorpe | 1% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Harwich and North Essex | 87% |
| Clacton | 13% |
Deprivation
The middle postcode here sits in decile 3 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 54% of this district's postcodes sit in the most deprived three deciles, 0% in the least deprived three.
Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.
Neighbouring districts in the CO area
CO1 · CO2 · CO3 · CO4 · CO5 · CO6 · CO7 · CO8 · CO9 · CO10 · CO11 · CO13 · CO14 · CO15 · CO16
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.