Home Postcode finder SA Port Vincent Port Vincent postcode SA Port Vincent is a locality in South Australia covered by postcode 5581. Postcode 5581 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Port Vincent business listing More business listings in Port Vincent Businesses in Port VincentPort Vincent Primary School16 Minlacowie Rd · 08 88537027 Common questionsWhat is the postcode for Port Vincent?Port Vincent, SA has the postcode 5581.What state is Port Vincent in?Port Vincent is in South Australia (SA).Does postcode 5581 cover more than one suburb?Yes. Postcode 5581 covers 2 localities, so the postcode alone does not identify Port Vincent. Browse other postcodes in South Australia, or widen the search to every Australian postcode.