Home Postcode finder WA Highbury Highbury postcode WA Highbury is a locality in Western Australia covered by postcode 6313. Postcode 6313 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Highbury business listing Be the first listing in Highbury Common questionsWhat is the postcode for Highbury?Highbury, WA has the postcode 6313.What state is Highbury in?Highbury is in Western Australia (WA).Does postcode 6313 cover more than one suburb?No. Postcode 6313 covers Highbury only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.