Home Postcode finder SA Exeter Exeter postcode SA Exeter is a locality in South Australia covered by postcode 5019. Postcode 5019 State or territory South Australia (SA) Region Adelaide Add a free Exeter business listing More business listings in Exeter Businesses in ExeterGregory Built Bathroom RenovationsTeakle St, Exeter SA 5019, Australia · 0430 992 303 Common questionsWhat is the postcode for Exeter?Exeter, SA has the postcode 5019.What state is Exeter in?Exeter is in South Australia (SA).Does postcode 5019 cover more than one suburb?Yes. Postcode 5019 covers 4 localities, so the postcode alone does not identify Exeter. Browse other postcodes in South Australia, or widen the search to every Australian postcode.