Home Postcode finder QLD Florence Bay Florence Bay postcode QLD Florence Bay is a locality in Queensland covered by postcode 4819. Postcode 4819 State or territory Queensland (QLD) Region North QLD Add a free Florence Bay business listing Be the first listing in Florence Bay Common questionsWhat is the postcode for Florence Bay?Florence Bay, QLD has the postcode 4819.What state is Florence Bay in?Florence Bay is in Queensland (QLD).Does postcode 4819 cover more than one suburb?Yes. Postcode 4819 covers 7 localities, so the postcode alone does not identify Florence Bay. Browse other postcodes in Queensland, or widen the search to every Australian postcode.