Home Postcodes by state SA Duncan Duncan postcode SA Duncan is a locality in South Australia covered by postcode 5223. Postcode 5223 State or territory South Australia (SA) Region Sa Subs Near 2 Council area Kangaroo Island Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Duncan business listing Be the first listing in Duncan Suburbs near DuncanStraight-line distance between locality centres.Stokes BaySA 5223 · 8.4 kmMiddle RiverSA 5223 · 10.0 kmCassiniSA 5223 · 11.3 kmParndanaSA 5220 · 12.3 kmNewlandSA 5223 · 18.1 kmSeddonSA 5223 · 18.6 kmGosseSA 5223 · 19.9 kmWestern RiverSA 5223 · 24.3 kmKohinoorSA 5223 · 24.3 km Also in postcode 5223Bay Of ShoalsSA 5223BirchmoreSA 5223Brownlow KiSA 5223Cape BordaSA 5223CassiniSA 5223Cygnet RiverSA 5223D'Estrees BaySA 5223De Mole RiverSA 5223Emu BaySA 5223Flinders ChaseSA 5223GosseSA 5223HainesSA 5223Harriet RiverSA 5223KarattaSA 5223KingscoteSA 5223KohinoorSA 5223MacgillivraySA 5223MenziesSA 5223Middle RiverSA 5223Nepean BaySA 5223NewlandSA 5223North CapeSA 5223Seal BaySA 5223SeddonSA 5223Stokes BaySA 5223Stun'Sail BoomSA 5223Vivonne BaySA 5223Western RiverSA 5223WisangerSA 5223 Common questionsWhat is the postcode for Duncan?Duncan, SA has the postcode 5223.What state is Duncan in?Duncan is in South Australia (SA).What council is Duncan in?Duncan is in the Kangaroo Island local government area.Does postcode 5223 cover more than one suburb?Yes. Postcode 5223 covers 30 localities, so the postcode alone does not identify Duncan.What suburbs are near Duncan?The closest are Stokes Bay (8.4 km), Middle River (10.0 km), Cassini (11.3 km), Parndana (12.3 km) and Newland (18.1 km). Distances are straight lines between locality centres. Browse other postcodes in South Australia, or widen the search to every Australian postcode.