Home Postcode finder WA North Tammin North Tammin postcode WA North Tammin is a locality in Western Australia covered by postcode 6409. Postcode 6409 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free North Tammin business listing Be the first listing in North Tammin Common questionsWhat is the postcode for North Tammin?North Tammin, WA has the postcode 6409.What state is North Tammin in?North Tammin is in Western Australia (WA).Does postcode 6409 cover more than one suburb?Yes. Postcode 6409 covers 3 localities, so the postcode alone does not identify North Tammin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.