Home Postcode finder SA Adelaide Adelaide postcode SA Adelaide is a locality in South Australia covered by postcode 5000. Postcode 5000 State or territory South Australia (SA) Region Adelaide Add a free Adelaide business listing More business listings in Adelaide Businesses in Adelaide Asset Test And Tag 8 Brenton Ave · 1300 135 140 Silicon Dales Australia30 Marlborough St · 0419 851 891 The Lizard CentreEastwood SA 5063 · (08)8172 6200 Common questionsWhat is the postcode for Adelaide?Adelaide, SA has the postcode 5000.What state is Adelaide in?Adelaide is in South Australia (SA).Does postcode 5000 cover more than one suburb?Yes. Postcode 5000 covers 8 localities, so the postcode alone does not identify Adelaide. Browse other postcodes in South Australia, or widen the search to every Australian postcode.