Home Postcode finder QLD Limestone Ridges Limestone Ridges postcode QLD Limestone Ridges is a locality in Queensland covered by postcode 4305. Postcode 4305 State or territory Queensland (QLD) Region Western Suburbs Add a free Limestone Ridges business listing Be the first listing in Limestone Ridges Common questionsWhat is the postcode for Limestone Ridges?Limestone Ridges, QLD has the postcode 4305.What state is Limestone Ridges in?Limestone Ridges is in Queensland (QLD).Does postcode 4305 cover more than one suburb?Yes. Postcode 4305 covers 23 localities, so the postcode alone does not identify Limestone Ridges. Browse other postcodes in Queensland, or widen the search to every Australian postcode.