Home Postcode finder QLD Leslie Dam Leslie Dam postcode QLD Leslie Dam is a locality in Queensland covered by postcode 4370. Postcode 4370 State or territory Queensland (QLD) Region Toowoomba Region Add a free Leslie Dam business listing Be the first listing in Leslie Dam Common questionsWhat is the postcode for Leslie Dam?Leslie Dam, QLD has the postcode 4370.What state is Leslie Dam in?Leslie Dam is in Queensland (QLD).Does postcode 4370 cover more than one suburb?Yes. Postcode 4370 covers 46 localities, so the postcode alone does not identify Leslie Dam. Browse other postcodes in Queensland, or widen the search to every Australian postcode.