Home Postcode finder SA Glenroy Glenroy postcode SA Glenroy 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 Glenroy business listing Be the first listing in Glenroy Common questionsWhat is the postcode for Glenroy?Glenroy, SA has the postcode 5277.What state is Glenroy in?Glenroy 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 Glenroy. Browse other postcodes in South Australia, or widen the search to every Australian postcode.