leinster postcode wa Home ›› Postcode Finder ›› WA ›› Leinster Leinster local listingsThe suburb of Leinster is located in WA and has a postcode of 6437. Free leinster business listing! 1Leinster School1 Gledden Drive 08 90379086 View more business listings in leinster Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.