Allen's Green is a village in Hertfordshire, England.

It is situated within the CM21 postcode district, which is 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.

Key data for Allen's Green:

Administrative Ward: Much Hadham

Administrative District: East Hertfordshire

Administrative County: Hertfordshire

Country: England

UK Parliament: Hertford and Stortford

NHS Local Health Authority: East of England

NHS Region: North, Midlands and the East

A map showing the location of Allen's Green within the CM21 postcode district