Home Postcode finder QLD St Aubyn St Aubyn postcode QLD St Aubyn is a locality in Queensland covered by postcode 4352. Postcode 4352 State or territory Queensland (QLD) Region Toowoomba Region Add a free St Aubyn business listing Be the first listing in St Aubyn Common questionsWhat is the postcode for St Aubyn?St Aubyn, QLD has the postcode 4352.What state is St Aubyn in?St Aubyn is in Queensland (QLD).Does postcode 4352 cover more than one suburb?Yes. Postcode 4352 covers 71 localities, so the postcode alone does not identify St Aubyn. Browse other postcodes in Queensland, or widen the search to every Australian postcode.