Home Postcode finder QLD Coalstoun Lakes Coalstoun Lakes postcode QLD Coalstoun Lakes is a locality in Queensland covered by postcode 4621. Postcode 4621 State or territory Queensland (QLD) Region Sunshine Coast Add a free Coalstoun Lakes business listing More business listings in Coalstoun Lakes Businesses in Coalstoun LakesCoalstoun Lakes State School3 Main St · 07 41275133 Common questionsWhat is the postcode for Coalstoun Lakes?Coalstoun Lakes, QLD has the postcode 4621.What state is Coalstoun Lakes in?Coalstoun Lakes is in Queensland (QLD).Does postcode 4621 cover more than one suburb?Yes. Postcode 4621 covers 11 localities, so the postcode alone does not identify Coalstoun Lakes. Browse other postcodes in Queensland, or widen the search to every Australian postcode.