Home Postcode finder SA Comaum Comaum postcode SA Comaum is a locality in South Australia covered by postcode 5277. Postcode 5277 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Comaum business listing Be the first listing in Comaum Common questionsWhat is the postcode for Comaum?Comaum, SA has the postcode 5277.What state is Comaum in?Comaum is in South Australia (SA).Does postcode 5277 cover more than one suburb?Yes. Postcode 5277 covers 8 localities, so the postcode alone does not identify Comaum. Browse other postcodes in South Australia, or widen the search to every Australian postcode.