highgate postcode sa Home ›› Postcode Finder ›› SA ›› Highgate Highgate local listingsThe suburb of Highgate is located in SA and has a postcode of 5063. Free highgate business listing! 1Concordia College45 Cheltenham St 08 827204442Highgate Junior Primary School12 Hampstead Ave 08 827196223Highgate Primary School12 Hampstead Ave 08 82714399 View more business listings in highgate Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.