Warnham is a village in West Sussex, England.
It is situated within the RH12 postcode district .
The RH12 postcode district lies within the following post towns:
The RH12 postcode district is within the Redhill" postcode area.
Administrative Ward: Itchingfield, Slinfold and Warnham
Administrative District: Horsham
Administrative County: West Sussex
Country: England
UK Parliament: Horsham
NHS Local Health Authority: South East Coast
NHS Region: Southern