Home Postcode finder SA Holden Hill Holden Hill postcode SA Holden Hill is a locality in South Australia covered by postcode 5088. Postcode 5088 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Holden Hill business listing Be the first listing in Holden Hill Common questionsWhat is the postcode for Holden Hill?Holden Hill, SA has the postcode 5088.What state is Holden Hill in?Holden Hill is in South Australia (SA).Does postcode 5088 cover more than one suburb?No. Postcode 5088 covers Holden Hill only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in South Australia, or widen the search to every Australian postcode.