Rettendon is a village in Essex, England.
It is situated within the CM3 postcode district, which is within the Chelmsford post town.
The full list of postcode districts within the Chelmsford post town is as follows:
The Chelmsford post town is within the Chelmsford postcode area.
Administrative Ward: Rettendon and Runwell
Administrative District: Chelmsford
Administrative County: Essex
Country: England
UK Parliament: Maldon
NHS Local Health Authority: East of England
NHS Region: North, Midlands and the East