duffy postcode act Home ›› Postcode Finder ›› ACT ›› Duffy Duffy local listingsThe suburb of Duffy is located in ACT and has a postcode of 2611. Free duffy business listing! 1Duffy Primary School47 Burrinjuck Cres 02 62056022 View more business listings in duffy Search and find other Postcodes in Australian Capital Territory or widen the search to Postcodes in Australia.