The CM12 postcode district is a postal district with a population of 19,822 and is within the CM Chelmsford postcode area.
The area of the CM12 postcode district is 8.60 square miles which is 22.28 square kilometres or 5,506.32 acres.
There are 2 postcode sectors within the CM12 district.
|Postcode Sector||Delivery Office|
|CM12 0||Billericay Delivery Office|
|CM12 9||Billericay Delivery Office|