Home Postcode finder SA Underdale Underdale postcode SA Underdale is a locality in South Australia covered by postcode 5032. Postcode 5032 State or territory South Australia (SA) Region Adelaide Add a free Underdale business listing More business listings in Underdale Businesses in UnderdaleBenchmark Education SolutionsUnderdale SA, Australia · +61451885945Benchmark Education Solutions326 Henley Beach Road, Underdale SA, Australia · 0451885945Underdale High School19 Garden Terrace · 08 83018000 Common questionsWhat is the postcode for Underdale?Underdale, SA has the postcode 5032.What state is Underdale in?Underdale is in South Australia (SA).Does postcode 5032 cover more than one suburb?Yes. Postcode 5032 covers 3 localities, so the postcode alone does not identify Underdale. Browse other postcodes in South Australia, or widen the search to every Australian postcode.