Home Local listings SA Highgate Local businesses in Highgate, SA 6 businesses listed. Select one for its address, contact details and location. SuburbHighgateState or territorySABusinesses listed6 Add a free Highgate business listingAll SA listings All 6 listings Australian Patent and Trademark ServicesHighgate · 5063Concordia CollegeHighgate · 5063Highgate Junior Primary SchoolHighgate · 5063Highgate Primary SchoolHighgate · 5063My Cleaning AppHighgate · 5063St John's Lutheran Primary SchoolHighgate · 5063