CO2 postcode district

Postcodes and sectors

944 of the district's 1,167 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 51.86947, 0.89392, which locates the district, not a building.

Companies registered in CO2

Companies House lists 2,009 companies with a registered office in CO2; 236 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for CO2

• Colchester
• Essex
• Eastern
• Berechurch
• Layer-de-la-Haye
• Birch Green
• Malting Green
• Hardy's Green
• Layer Breton
• Birch
• Heckfordbridge

Roads filed under CO2

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abberton Road
• Abbey Field View
• Abbey Gate Street
• Abbot's Road
• Adelaide Drive
• Aggregate Walk
• Agnes Silverside Close
• Aisne Road
• Alamein Road
• Alanbrooke Road
• Albany Gardens
• Albion Grove
• Alport Avenue
• Altbarn Road
• Amber Court
• Anglia Close
• Anzio Crescent
• Arakan Close
• Armidale Walk
• Arthur Street
• Artillery Barracks Folley
• Artillery Barracks Folly
• Ash Grove
• Aurora Drive
• Avignon Close
• Ballantyne Drive
• Barbour Gardens
• Bardfield Road
• Barn Hall Avenue
• Baronswood Way
• Barrington Road
• Bathurst Close
• Battalion Walk
• Battlesbrook Road
• Baynard Green
• Bay Tree Close
• Beche Road
• Beech Terrace
• Beechwood Close
• Beeleigh Close
• Bell Close
• Bellona Way
• Berechurch Hall Road
• Berechurch Road
• Berefield Way
• Bevan Close
• Birch Road
• Birch Street
• Birchway
• Bishop Road
• Blackheath
• Blacksmith Lane
• Blenheim Drive
• Blind Lane
• Boadicea Way
• Bober Court
• Bolls Lane
• Bounstead Hill
• Bounstead Road
• Bourne Court

Check an address in CO2

Check an address in CO2

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CO2" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CO2

What does a CO2 postcode tell you?

That the address lies in the CO2 district of the CO (Colchester) postcode area, and the place OS Open Names most often lists first for its postcodes is Colchester. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 944 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest CO2

• CO11.7 km
• CO33.1 km
• CO44.8 km
• CO77.8 km
• CO57.9 km
• CO69.4 km
• CO814.5 km
• CO1114.9 km
• CO1616.6 km
• CM819.0 km
• CM919.6 km
• CO1519.7 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids