Home Postcode finder SA Yongala Yongala postcode SA Yongala is a locality in South Australia covered by postcode 5493. Postcode 5493 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Yongala business listing Be the first listing in Yongala Common questionsWhat is the postcode for Yongala?Yongala, SA has the postcode 5493.What state is Yongala in?Yongala is in South Australia (SA).Does postcode 5493 cover more than one suburb?No. Postcode 5493 covers Yongala only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in South Australia, or widen the search to every Australian postcode.