Home Postcodes by state SA Cockburn Cockburn postcode SA Cockburn is a locality in South Australia covered by postcode 5440. Postcode 5440 State or territory South Australia (SA) Region SA Outer Suburbs Council area Unincorporated SA Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Cockburn business listing Be the first listing in Cockburn Suburbs near CockburnStraight-line distance between locality centres.MingarySA 5440 · 21.4 km Also in postcode 5440Manna HillSA 5440MingarySA 5440NackaraSA 5440OlarySA 5440WaukaringaSA 5440YuntaSA 5440 Common questionsWhat is the postcode for Cockburn?Cockburn, SA has the postcode 5440.What state is Cockburn in?Cockburn is in South Australia (SA).What council is Cockburn in?Cockburn is in the Unincorporated SA local government area.Does postcode 5440 cover more than one suburb?Yes. Postcode 5440 covers 7 localities, so the postcode alone does not identify Cockburn.What suburbs are near Cockburn?The closest are Mingary (21.4 km). Distances are straight lines between locality centres. Browse other postcodes in South Australia, or widen the search to every Australian postcode.