Home Postcode finder SA Compton Compton postcode SA Compton is a locality in South Australia covered by postcode 5291. Postcode 5291 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Compton business listing More business listings in Compton Businesses in ComptonCompton Primary School08 87251723 Common questionsWhat is the postcode for Compton?Compton, SA has the postcode 5291.What state is Compton in?Compton is in South Australia (SA).Does postcode 5291 cover more than one suburb?Yes. Postcode 5291 covers 34 localities, so the postcode alone does not identify Compton. Browse other postcodes in South Australia, or widen the search to every Australian postcode.