Home Postcode finder WA Midland Midland postcode WA Midland is a locality in Western Australia covered by postcode 6056. Postcode 6056 State or territory Western Australia (WA) Region North West Suburbs Add a free Midland business listing More business listings in Midland Businesses in Midland4WD Part Shop74 Elgee Rd · 08 9250 4650Barber NationGreat Eastern Hwy, Midland WA 6056, Australia · 861508477Bupa MidlandShop T062, Midland Gate, 274 Great Eastern Highway, Midland WA 6056 · 1866 812 535 Common questionsWhat is the postcode for Midland?Midland, WA has the postcode 6056.What state is Midland in?Midland is in Western Australia (WA).Does postcode 6056 cover more than one suburb?Yes. Postcode 6056 covers 17 localities, so the postcode alone does not identify Midland. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.