tranmere-north postcode sa Home ›› Postcode Finder ›› SA ›› Tranmere-North Tranmere North local listingsThe suburb of Tranmere North is located in SA and has a postcode of 5073. Free tranmere north business listing! Get the first free listing in tranmere north! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.