Home Postcode finder QLD Wyalla Plaza Wyalla Plaza postcode QLD Wyalla Plaza is a locality in Queensland covered by postcode 4350. Postcode 4350 State or territory Queensland (QLD) Region Toowoomba Region Add a free Wyalla Plaza business listing Be the first listing in Wyalla Plaza Common questionsWhat is the postcode for Wyalla Plaza?Wyalla Plaza, QLD has the postcode 4350.What state is Wyalla Plaza in?Wyalla Plaza is in Queensland (QLD).Does postcode 4350 cover more than one suburb?Yes. Postcode 4350 covers 43 localities, so the postcode alone does not identify Wyalla Plaza. Browse other postcodes in Queensland, or widen the search to every Australian postcode.