Home Postcode finder SA Kingston Se Kingston Se postcode SA Kingston Se is a locality in South Australia covered by postcode 5275. Postcode 5275 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Kingston Se business listing Be the first listing in Kingston Se Common questionsWhat is the postcode for Kingston Se?Kingston Se, SA has the postcode 5275.What state is Kingston Se in?Kingston Se is in South Australia (SA).Does postcode 5275 cover more than one suburb?Yes. Postcode 5275 covers 15 localities, so the postcode alone does not identify Kingston Se. Browse other postcodes in South Australia, or widen the search to every Australian postcode.