Home Postcode finder SA Jericho Jericho postcode SA Jericho is a locality in South Australia covered by postcode 5554. Postcode 5554 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Jericho business listing Be the first listing in Jericho Common questionsWhat is the postcode for Jericho?Jericho, SA has the postcode 5554.What state is Jericho in?Jericho is in South Australia (SA).Does postcode 5554 cover more than one suburb?Yes. Postcode 5554 covers 10 localities, so the postcode alone does not identify Jericho. Browse other postcodes in South Australia, or widen the search to every Australian postcode.