Home Postcode finder WA Bullfinch Bullfinch postcode WA Bullfinch is a locality in Western Australia covered by postcode 6484. Postcode 6484 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free Bullfinch business listing Be the first listing in Bullfinch Common questionsWhat is the postcode for Bullfinch?Bullfinch, WA has the postcode 6484.What state is Bullfinch in?Bullfinch is in Western Australia (WA).Does postcode 6484 cover more than one suburb?Yes. Postcode 6484 covers 3 localities, so the postcode alone does not identify Bullfinch. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.