Home Postcode finder QLD Richmond Hill Richmond Hill postcode QLD Richmond Hill is a locality in Queensland covered by postcode 4820. Postcode 4820 State or territory Queensland (QLD) Region North QLD Add a free Richmond Hill business listing Be the first listing in Richmond Hill Common questionsWhat is the postcode for Richmond Hill?Richmond Hill, QLD has the postcode 4820.What state is Richmond Hill in?Richmond Hill is in Queensland (QLD).Does postcode 4820 cover more than one suburb?Yes. Postcode 4820 covers 21 localities, so the postcode alone does not identify Richmond Hill. Browse other postcodes in Queensland, or widen the search to every Australian postcode.