Home Postcode finder WA Marrinup Marrinup postcode WA Marrinup is a locality in Western Australia covered by postcode 6213. Postcode 6213 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Marrinup business listing Be the first listing in Marrinup Common questionsWhat is the postcode for Marrinup?Marrinup, WA has the postcode 6213.What state is Marrinup in?Marrinup is in Western Australia (WA).Does postcode 6213 cover more than one suburb?Yes. Postcode 6213 covers 7 localities, so the postcode alone does not identify Marrinup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.