CO11 postcode district

Postcodes and sectors

574 of the district's 709 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 51.94196, 1.07669, which locates the district, not a building.

Companies registered in CO11

Companies House lists 793 companies with a registered office in CO11; none of them at an address 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 CO11

• Eastern
• Tendring
• Essex
• Lawford
• Babergh
• Suffolk
• Manningtree
• Mistley
• Brantham
• Cattawade
• Bradfield Heath
• Wix
• Wrabness
• Foxash Estate
• Bradfield
• Wix Green
• Little Bromley
• Horsleycross Street
• Mistley Heath
• Horsley Cross
• Goose Green

Roads filed under CO11

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.

• Abbots Close
• Amelia Drive
• Anchor End
• Anchor Lane
• Anglers Avenue
• Ardleigh Road
• Ash Ground Close
• Bailey Gardens
• Bargate Lane
• Barker Close
• Barley Close
• Barlon Road
• Barnfield
• Barn Lane
• Barrack Street
• Baytree Close
• Beckford Road
• Bentley Road
• Bergholt Road
• Bexford Way
• Birch Drive
• Blackbird Close
• Black Boy Lane
• Blake Close
• Blenheim Close
• Blenheim Walk
• Bloyces Lane
• Bradfield Road
• Brantham Hill
• Brickman's Hill
• Bridge Place
• Bromley Road
• Brooklands Rise
• Brooklands Road
• Brook Street
• Browning Road
• Brunswick Gardens
• Brunswick House Cut
• Burrows Close
• Butler's Lane
• California Road
• Calves Lane
• Cambria Close
• Cambridge Drive
• Cansey Lane
• Cattawade Street
• Causeway End
• Cavendish Drive
• Cedar Close
• Cedar Crescent
• Chapel Cut
• Chequers Road
• Chester Grove
• Church Hill
• Church Lane
• Church Road
• Church View
• Clacton Road
• Claude Oliver Close
• Colchester Road

Check an address in CO11

Check an address in CO11

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CO11" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CO11

What does a CO11 postcode tell you?

That the address lies in the CO11 district of the CO (Colchester) postcode area, and the place OS Open Names most often lists first for its postcodes is Lawford. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 574 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 CO11

• IP97.1 km
• CO78.2 km
• CO411.4 km
• CO1212.1 km
• IP212.1 km
• IP313.4 km
• IP813.5 km
• CO1613.7 km
• CO113.9 km
• IP114.6 km
• CO214.9 km
• IP415.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids