Home Postcode finder SA Stun'Sail Boom Stun'Sail Boom postcode SA Stun'Sail Boom is a locality in South Australia covered by postcode 5223. Postcode 5223 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Stun'Sail Boom business listing Be the first listing in Stun'Sail Boom Common questionsWhat is the postcode for Stun'Sail Boom?Stun'Sail Boom, SA has the postcode 5223.What state is Stun'Sail Boom in?Stun'Sail Boom is in South Australia (SA).Does postcode 5223 cover more than one suburb?Yes. Postcode 5223 covers 30 localities, so the postcode alone does not identify Stun'Sail Boom. Browse other postcodes in South Australia, or widen the search to every Australian postcode.