Home Postcode finder WA Ongerup Ongerup postcode WA Ongerup is a locality in Western Australia covered by postcode 6336. Postcode 6336 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Ongerup business listing More business listings in Ongerup Businesses in OngerupOngerup Primary SchoolCarpenter St · 08 98282033 Common questionsWhat is the postcode for Ongerup?Ongerup, WA has the postcode 6336.What state is Ongerup in?Ongerup is in Western Australia (WA).Does postcode 6336 cover more than one suburb?Yes. Postcode 6336 covers 6 localities, so the postcode alone does not identify Ongerup. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.