Home Postcode finder WA Newcarlbeon Newcarlbeon postcode WA Newcarlbeon is a locality in Western Australia covered by postcode 6475. Postcode 6475 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Newcarlbeon business listing Be the first listing in Newcarlbeon Common questionsWhat is the postcode for Newcarlbeon?Newcarlbeon, WA has the postcode 6475.What state is Newcarlbeon in?Newcarlbeon is in Western Australia (WA).Does postcode 6475 cover more than one suburb?Yes. Postcode 6475 covers 7 localities, so the postcode alone does not identify Newcarlbeon. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.