Home Postcode finder SA Yacka Yacka postcode SA Yacka is a locality in South Australia covered by postcode 5470. Postcode 5470 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Yacka business listing Be the first listing in Yacka Common questionsWhat is the postcode for Yacka?Yacka, SA has the postcode 5470.What state is Yacka in?Yacka is in South Australia (SA).Does postcode 5470 cover more than one suburb?No. Postcode 5470 covers Yacka only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in South Australia, or widen the search to every Australian postcode.