Home Postcode finder QLD Oakdale Oakdale postcode QLD Oakdale is a locality in Queensland covered by postcode 4605. Postcode 4605 State or territory Queensland (QLD) Region Toowoomba Region Add a free Oakdale business listing Be the first listing in Oakdale Common questionsWhat is the postcode for Oakdale?Oakdale, QLD has the postcode 4605.What state is Oakdale in?Oakdale is in Queensland (QLD).Does postcode 4605 cover more than one suburb?Yes. Postcode 4605 covers 21 localities, so the postcode alone does not identify Oakdale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.