CM21 is a postcode district within the Sawbridgeworth post town.

CM21 is the only postcode district within the Sawbridgeworth post town.

The Sawbridgeworth post town is within the Chelmsford postcode area.


The full list of post towns with the Chelmsford postcode area is as follows:

Villages within the CM21 postcode district:

A map of the CM21 postcode district