holder postcode act Home ›› Postcode Finder ›› ACT ›› Holder Holder local listingsThe suburb of Holder is located in ACT and has a postcode of 2611. Free holder business listing! 1Canberra Montessori School35 Mulley St 02 628719622St Jude's Primary School49 Mulley St 02 62887688 View more business listings in holder Search and find other Postcodes in Australian Capital Territory or widen the search to Postcodes in Australia.