CM0 postcode district

Postcodes and sectors

564 of the district's 721 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 51.66160, 0.83283, which locates the district, not a building.

Companies registered in CM0

Companies House lists 1,312 companies with a registered office in CM0; 495 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 CM0

• Maldon
• Essex
• Eastern
• Burnham-on-Crouch
• Southminster
• Tillingham
• Stoneyhills
• Ramsey Island
• Bradwell on Sea
• Steeple
• Ostend
• Asheldham
• Bradwell Waterside
• Mill End
• Dengie
• Creeksea
• Downhall Beach Estate
• Bradwell Wick
• St Lawrence

Roads filed under CM0

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.

• Acorn Street
• Alamein Road
• Albert Road
• Alexandra Road
• Alpha Road
• Ambrosia Avenue
• Anchorage View
• Appleberry Place
• Arcadia Road
• Argyle Road
• Arnheim Road
• Ash Grove
• Ashwood Close
• Bacons Chase
• Badgers Keep
• Bakery Close
• Barclay Drive
• Barnmead Way
• Bate-Dudley Drive
• Batt's Road
• Baynard Walk
• Bay View
• Beachy Drive
• Beauchamps
• Beech Close
• Belvedere Road
• Benson Close
• Best Drive
• Birch Gardens
• Birch Road
• Blackwater Close
• Blackwater Mews
• Boatyard Avenue
• Bouvel Drive
• Bowland Way
• Bowles Close
• Bradwell Road
• Braeburn Close
• Bramley Avenue
• Brent Way
• Brickwall Close
• Bridgewick Road
• Brook Lane
• Brook Road
• Buckeridge Way
• Bull Close
• Burnham Road
• Buttercup Way
• Calmpatch
• Canney Road
• Casey Lane
• Cedar Grove
• Chancel Close
• Chandlers
• Chapel Lane
• Chapel Road
• Charwood Mews
• Chelmer Way
• Cherry Mead
• Cherry Orchard

Check an address in CM0

Check an address in CM0

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CM0" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CM0

What does a CM0 postcode tell you?

That the address lies in the CM0 district of the CM (Chelmsford) postcode area, and the place OS Open Names most often lists first for its postcodes is Burnham-on-Crouch. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 564 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 CM0

• SS411.3 km
• CM912.7 km
• SS313.5 km
• SS514.2 km
• SS214.7 km
• SS9915.1 km
• SS115.5 km
• SS016.2 km
• CO517.1 km
• SS917.3 km
• SS617.6 km
• CM318.4 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids