Home Postcode finder QLD Greenlake Greenlake postcode QLD Greenlake is a locality in Queensland covered by postcode 4701. Postcode 4701 State or territory Queensland (QLD) Region Central QLD Add a free Greenlake business listing Be the first listing in Greenlake Common questionsWhat is the postcode for Greenlake?Greenlake, QLD has the postcode 4701.What state is Greenlake in?Greenlake is in Queensland (QLD).Does postcode 4701 cover more than one suburb?Yes. Postcode 4701 covers 18 localities, so the postcode alone does not identify Greenlake. Browse other postcodes in Queensland, or widen the search to every Australian postcode.