Home Postcode finder SA Solomon Solomon postcode SA Solomon is a locality in South Australia covered by postcode 5641. Postcode 5641 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Solomon business listing Be the first listing in Solomon Common questionsWhat is the postcode for Solomon?Solomon, SA has the postcode 5641.What state is Solomon in?Solomon is in South Australia (SA).Does postcode 5641 cover more than one suburb?Yes. Postcode 5641 covers 13 localities, so the postcode alone does not identify Solomon. Browse other postcodes in South Australia, or widen the search to every Australian postcode.