Home Postcode finder WA Nulsen Nulsen postcode WA Nulsen is a locality in Western Australia covered by postcode 6450. Postcode 6450 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Nulsen business listing More business listings in Nulsen Businesses in NulsenNulsen Primary SchoolLot 854 Victoria St · 08 90714466 Common questionsWhat is the postcode for Nulsen?Nulsen, WA has the postcode 6450.What state is Nulsen in?Nulsen is in Western Australia (WA).Does postcode 6450 cover more than one suburb?Yes. Postcode 6450 covers 23 localities, so the postcode alone does not identify Nulsen. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.