Home Postcode finder SA Bangor Bangor postcode SA Bangor is a locality in South Australia covered by postcode 5481. Postcode 5481 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Bangor business listing Be the first listing in Bangor Common questionsWhat is the postcode for Bangor?Bangor, SA has the postcode 5481.What state is Bangor in?Bangor is in South Australia (SA).Does postcode 5481 cover more than one suburb?Yes. Postcode 5481 covers 4 localities, so the postcode alone does not identify Bangor. Browse other postcodes in South Australia, or widen the search to every Australian postcode.