The CM13 3 Herongate Postcode Sector
The CM13 3 postcode sector stands on the Essex and Greater London border in the East of England.
CM13 3 is a postcode sector within the CM13 postcode district which is within the CM Chelmsford postcode area.
The Royal Mail delivery office for the CM13 3 postal sector is the Brentwood Delivery Office.
The area of the CM13 3 postcode sector is 14.73 square miles which is 38.15 square kilometres or 9,427.39 square acres.
The CM13 3 postcode sector is crossed by the M25 motorway.
The CM13 3 postcode sector is crossed by a railway.
Map of the CM13 3 Postcode Sector
Explore the cm13 3 postcode sector by using our free interactive map.