Home Postcode finder WA Nilgen Nilgen postcode WA Nilgen is a locality in Western Australia covered by postcode 6044. Postcode 6044 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Nilgen business listing Be the first listing in Nilgen Common questionsWhat is the postcode for Nilgen?Nilgen, WA has the postcode 6044.What state is Nilgen in?Nilgen is in Western Australia (WA).Does postcode 6044 cover more than one suburb?Yes. Postcode 6044 covers 4 localities, so the postcode alone does not identify Nilgen. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.