The CM20 postcode district is a postal district with a population of 21,400 and is within the CM Chelmsford postcode area.
The area of the CM20 postcode district is 6.44 square miles which is 16.67 square kilometres or 4,120.05 acres.
There are 3 postcode sectors within the CM20 district.
|Postcode Sector||Delivery Office|
|CM20 1||Harlow Delivery Office|
|CM20 2||Harlow Delivery Office|
|CM20 3||Harlow Delivery Office|