Home Postcode finder SA Bowmans Bowmans postcode SA Bowmans is a locality in South Australia covered by postcode 5550. Postcode 5550 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Bowmans business listing Be the first listing in Bowmans Common questionsWhat is the postcode for Bowmans?Bowmans, SA has the postcode 5550.What state is Bowmans in?Bowmans is in South Australia (SA).Does postcode 5550 cover more than one suburb?Yes. Postcode 5550 covers 8 localities, so the postcode alone does not identify Bowmans. Browse other postcodes in South Australia, or widen the search to every Australian postcode.