Home Postcode finder WA Flint Flint postcode WA Flint is a locality in Western Australia covered by postcode 6302. Postcode 6302 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Flint business listing More business listings in Flint Businesses in FlintAVG Tech Support5 Maritime Avenue · 1800764884 Common questionsWhat is the postcode for Flint?Flint, WA has the postcode 6302.What state is Flint in?Flint is in Western Australia (WA).Does postcode 6302 cover more than one suburb?Yes. Postcode 6302 covers 23 localities, so the postcode alone does not identify Flint. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.