Heronsgate is a village in Hertfordshire, England.
It is situated within the WD3 postcode district, which is within the Rickmansworth post town.
WD3 is the only postcode district within the Rickmansworth post town.
The Rickmansworth post town is within the Watford postcode area.
Administrative Ward: Maple Cross & Mill End
Administrative District: Three Rivers
Administrative County: Hertfordshire
Country: England
UK Parliament: South West Hertfordshire
NHS Local Health Authority: East of England
NHS Region: North, Midlands and the East