The CM11 1 postcode sector is within the county of Essex in the East of England.
CM11 1 is a postcode sector within the CM11 postcode district which is within the CM Chelmsford postcode area.
The Royal Mail delivery office for the CM11 1 postal sector is the Billericay Delivery Office.
The area of the CM11 1 postcode sector is 6.51 square miles which is 16.86 square kilometres or 4,166.79 square acres.
Waterways within the CM11 1 postcode sector include the River Crouch.
The CM11 1 postcode sector is crossed by a railway.
Explore the cm11 1 postcode sector by using our free interactive map.
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