CM6 postcode district

Postcodes and sectors

989 of the district's 1,194 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 51.87817, 0.36532, which locates the district, not a building.

Companies registered in CM6

Companies House lists 2,638 companies with a registered office in CM6; 433 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 CM6

• Essex
• Eastern
• Uttlesford
• Great Dunmow
• Thaxted
• Little Dunmow
• Felsted
• Little Canfield
• Stebbing
• Leaden Roding
• Barnston
• Great Easton
• Smith's Green
• Watch House Green
• High Roding
• Braintree
• Bannister Green
• Little Easton
• Causeway End
• Chelmsford
• White Roding
• Duton Hill
• Roundbush Green
• Brookend

Roads filed under CM6

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.

• Abbey View
• Acacia Drive
• Acorn Grove
• Adare Close
• Ainsworth Drive
• Alcotts Place
• Alders Place
• Alderton Close
• Algar Close
• Almond Road
• Anderson Grove
• Andrews Farm Lane
• Angel Lane
• Arnold Place
• Arrowhead Place
• Ash Grove
• Azalea Mews
• Bakers Lane
• Barbarry Path
• Bardfield Road
• Barley Close
• Barley Lane
• Barnard Close
• Barnards Field
• Barnetson Place
• Barnston Green
• Baynard Avenue
• Beaumont Hill
• Bell Lane
• Bellrope Meadow
• Bennet Canfield
• Bennett's Lane
• Berbice Lane
• Berners End
• Bigods Lane
• Birch Road
• Black Chapel Lane
• Black Lane
• Blackwater Drive
• Blamsters Rise
• Blessen Meadow
• Bluebell Close
• Bolford Street
• Bowyers Road
• Boxley Lane
• Bradley Close
• Braintree Road
• Bramble Lane
• Brambles Close
• Bran End Fields
• Breach Lane
• Brickburn Close
• Brick Kiln Drive
• Brick Kiln Lane
• Bright Road
• Brimstone Place
• Britric Close
• Broadfield
• Brocks Mead
• Brookfield Farm Way

Check an address in CM6

Check an address in CM6

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CM6" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CM6

What does a CM6 postcode tell you?

That the address lies in the CM6 district of the CM (Chelmsford) postcode area, and the place OS Open Names most often lists first for its postcodes is Great Dunmow. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 989 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 CM6

• CM229.5 km
• CM2411.3 km
• CM712.0 km
• CM7713.0 km
• CM2314.2 km
• CM115.9 km
• CM2116.8 km
• CB1117.0 km
• CM9817.5 km
• CB1018.2 km
• CM1719.0 km
• CM519.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids