Home Postcode finder SA Seacliff Seacliff postcode SA Seacliff is a locality in South Australia covered by postcode 5049. Postcode 5049 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Seacliff business listing More business listings in Seacliff Businesses in SeacliffCoastal Electrical Seacliff · 04 0406 0933 Music Eternal687A Brighton Road, Seacliff SA, Australia · 0439737108Seacliff Primary School1-3 Barwell Ave · 08 82961950 Common questionsWhat is the postcode for Seacliff?Seacliff, SA has the postcode 5049.What state is Seacliff in?Seacliff is in South Australia (SA).Does postcode 5049 cover more than one suburb?Yes. Postcode 5049 covers 5 localities, so the postcode alone does not identify Seacliff. Browse other postcodes in South Australia, or widen the search to every Australian postcode.