Home Postcode finder SA Caltowie West Caltowie West postcode SA Caltowie West is a locality in South Australia covered by postcode 5490. Postcode 5490 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Caltowie West business listing Be the first listing in Caltowie West Common questionsWhat is the postcode for Caltowie West?Caltowie West, SA has the postcode 5490.What state is Caltowie West in?Caltowie West is in South Australia (SA).Does postcode 5490 cover more than one suburb?Yes. Postcode 5490 covers 3 localities, so the postcode alone does not identify Caltowie West. Browse other postcodes in South Australia, or widen the search to every Australian postcode.