Home Postcode finder WA Canna Canna postcode WA Canna is a locality in Western Australia covered by postcode 6627. Postcode 6627 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Canna business listing Be the first listing in Canna Common questionsWhat is the postcode for Canna?Canna, WA has the postcode 6627.What state is Canna in?Canna is in Western Australia (WA).Does postcode 6627 cover more than one suburb?No. Postcode 6627 covers Canna only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.