The CM3 4 postcode sector is within the county of Essex in the East of England.
CM3 4 is a postcode sector within the CM3 postcode district which is within the CM Chelmsford postcode area.
The Royal Mail delivery office for the CM3 4 postal sector is the Danbury Scale Payment Delivery Office.
The area of the CM3 4 postcode sector is 11.98 square miles which is 31.03 square kilometres or 7,666.66 square acres.
Waterways within the CM3 4 postcode sector include the River Chelmer, Blake's Stream and Ter
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