Home Postcode finder WA Allanson Allanson postcode WA Allanson is a locality in Western Australia covered by postcode 6225. Postcode 6225 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Allanson business listing More business listings in Allanson Businesses in AllansonAllanson Primary School15 Cameron Rd · 08 97341799 Common questionsWhat is the postcode for Allanson?Allanson, WA has the postcode 6225.What state is Allanson in?Allanson is in Western Australia (WA).Does postcode 6225 cover more than one suburb?Yes. Postcode 6225 covers 18 localities, so the postcode alone does not identify Allanson. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.