CO10 postcode district

Postcodes and sectors

1,682 of the district's 2,422 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 52.05865, 0.72151, which locates the district, not a building.

Companies registered in CO10

Companies House lists 2,681 companies with a registered office in CO10; 587 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 CO10

• Eastern
• Suffolk
• Babergh
• Sudbury
• West Suffolk
• Braintree
• Essex
• Long Melford
• Glemsford
• Clare
• Lavenham
• Acton
• Great Waldingfield
• Cavendish
• Boxford
• Hundon
• Newton
• Belchamp St Paul
• Stoke-by-Clare
• Stanstead
• Little Waldingfield
• Assington
• Ashen
• Foxearth

Roads filed under CO10

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.

• Abbas Walk
• Abbey Road
• Abbitts Place
• Abbot's Hall Drift
• Abbots Close
• Abbott Close
• Acre Walk
• Acton Close
• Acton Lane
• Acton Square
• Addison Road
• Airey Close
• Alan Phillips Way
• Alder Way
• Alexander Drive
• Alexandra Road
• Alston Close
• Amos Hill
• Angel Lane
• Angel Meadows
• Applegate Mews
• Aragon Court
• Armstrong Close
• Artesian Close
• Ashen Close
• Ashen Hill
• Ashen Lane
• Ashen Road
• Ash Grove
• Ashmere Rise
• Ash Street
• Assington Lane
• Assington Road
• Aubrey Drive
• Aveley Lane
• Babergh Close
• Back Lane
• Badleys Close
• Bailey Lane
• Baker's Road
• Ballingdon Gardens
• Ballingdon Hill
• Ballingdon Street
• Banham Drive
• Bantocks Road
• Barker Road
• Barn Street
• Barracks Road
• Barrow Hill
• Beaconsfield Close
• Beaconsfield Road
• Bear's Lane
• Beatty Road
• Beech Road
• Belle Vue Road
• Bells Lane
• Bells Road
• Betty Cocker Grove
• Birch's Lane
• Bishops Close

Check an address in CO10

Check an address in CO10

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CO10" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CO10

What does a CO10 postcode tell you?

That the address lies in the CO10 district of the CO (Colchester) postcode area, and the place OS Open Names most often lists first for its postcodes is Sudbury. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,682 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 CO10

• CO810.0 km
• CO912.6 km
• IP715.2 km
• IP2915.3 km
• CO615.6 km
• IP3019.0 km
• CB919.5 km
• IP3320.5 km
• CO321.4 km
• CO421.4 km
• IP3221.8 km
• CM721.9 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids