Home Postcode finder SA Murtho Murtho postcode SA Murtho is a locality in South Australia covered by postcode 5340. Postcode 5340 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Murtho business listing Be the first listing in Murtho Common questionsWhat is the postcode for Murtho?Murtho, SA has the postcode 5340.What state is Murtho in?Murtho is in South Australia (SA).Does postcode 5340 cover more than one suburb?Yes. Postcode 5340 covers 6 localities, so the postcode alone does not identify Murtho. Browse other postcodes in South Australia, or widen the search to every Australian postcode.