Home Postcode finder QLD Glass House Mountains Glass House Mountains postcode QLD Glass House Mountains is a locality in Queensland covered by postcode 4518. Postcode 4518 State or territory Queensland (QLD) Region Sunshine Coast Add a free Glass House Mountains business listing More business listings in Glass House Mountains Businesses in Glass House MountainsGlass House Mountains State School58 Coonowrin Rd · 07 54393222 Common questionsWhat is the postcode for Glass House Mountains?Glass House Mountains, QLD has the postcode 4518.What state is Glass House Mountains in?Glass House Mountains is in Queensland (QLD).Does postcode 4518 cover more than one suburb?No. Postcode 4518 covers Glass House Mountains only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Queensland, or widen the search to every Australian postcode.