Home Postcode finder WA Birchmont Birchmont postcode WA Birchmont is a locality in Western Australia covered by postcode 6214. Postcode 6214 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Birchmont business listing Be the first listing in Birchmont Common questionsWhat is the postcode for Birchmont?Birchmont, WA has the postcode 6214.What state is Birchmont in?Birchmont is in Western Australia (WA).Does postcode 6214 cover more than one suburb?Yes. Postcode 6214 covers 3 localities, so the postcode alone does not identify Birchmont. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.