Home Postcode finder SA Inkerman Inkerman postcode SA Inkerman 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 Inkerman business listing Be the first listing in Inkerman Common questionsWhat is the postcode for Inkerman?Inkerman, SA has the postcode 5550.What state is Inkerman in?Inkerman 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 Inkerman. Browse other postcodes in South Australia, or widen the search to every Australian postcode.