Home Postcode finder QLD Wellers Hill Wellers Hill postcode QLD Wellers Hill is a locality in Queensland covered by postcode 4121. Postcode 4121 State or territory Queensland (QLD) Region South Subs Add a free Wellers Hill business listing Be the first listing in Wellers Hill Common questionsWhat is the postcode for Wellers Hill?Wellers Hill, QLD has the postcode 4121.What state is Wellers Hill in?Wellers Hill is in Queensland (QLD).Does postcode 4121 cover more than one suburb?Yes. Postcode 4121 covers 5 localities, so the postcode alone does not identify Wellers Hill. Browse other postcodes in Queensland, or widen the search to every Australian postcode.