Home Postcodes by state WA Mullaloo Mullaloo postcode WA Mullaloo is a locality in Western Australia covered by postcode 6027. Postcode 6027 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Mullaloo business listing More business listings in Mullaloo Businesses in MullalooExplore Tours Perth12 · 1300135752Explore Tours Perth12 · 1300135752Explore Tours Perth12 · 1300135752 Common questionsWhat is the postcode for Mullaloo?Mullaloo, WA has the postcode 6027.What state is Mullaloo in?Mullaloo is in Western Australia (WA).Does postcode 6027 cover more than one suburb?Yes. Postcode 6027 covers 7 localities, so the postcode alone does not identify Mullaloo. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.