CM19 postcode district

Postcodes and sectors

394 of the district's 582 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 51.75940, 0.07114, which locates the district, not a building.

Companies registered in CM19

Companies House lists 1,750 companies with a registered office in CM19; 45 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 CM19

• Eastern
• Essex
• Harlow
• Epping Forest
• Roydon
• Roydon Hamlet
• Halls Green
• Lower Nazeing
• Tylerscross
• East Hertfordshire
• Hertfordshire
• Hoddesdon

Roads filed under CM19

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.

• Abercrombie Way
• Appleton Close
• Archers
• Bakery Close
• Barn Hill
• Barns Court
• Barrows Road
• Beaumont Park Drive
• Broadley Road
• Brockles Mead
• Brookside
• Burnett Park
• Bynghams
• Canons Brook
• Cawley Hatch
• Church End
• Church Mead
• Coldharbour Road
• Collins Meadow
• Copse Hill
• Deer Park
• Dobb's Weir Road
• Ducketts Mead
• Dunstalls
• East Point
• Epping Road
• Farm Close
• Fennells
• Fir Park
• Flex Meadow
• Fourth Avenue
• Glen Faba Road
• Grange Lane
• Greenway
• Greygoose Park
• Hamlet Hill
• Hansells Mead
• Harberts Road
• Hare Street
• Hare Street Springs
• Harlow Business Park
• Harlow Road
• Harold Close
• Harolds Road
• Hawkenbury
• Heighams
• Helions Road
• Heron Way
• High Street
• Holly Field
• Holmes Meadow
• Holy Acre
• Horsecroft Place
• Horsecroft Road
• Hull Grove
• Jerounds
• Katherine's Way
• Keefield
• Kingfisher Way
• Kingsmead Close

Check an address in CM19

Check an address in CM19

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CM19" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CM19

What does a CM19 postcode tell you?

That the address lies in the CM19 district of the CM (Chelmsford) postcode area, and the place OS Open Names most often lists first for its postcodes is Harlow. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 394 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 CM19

• CM921.3 km
• CM182.5 km
• CM202.8 km
• CM175.4 km
• EN115.6 km
• EN106.9 km
• CM167.4 km
• CM217.8 km
• EN98.0 km
• SG128.6 km
• SG109.8 km
• EN89.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids