Home Postcode finder ACT Chisholm Chisholm postcode ACT Chisholm is a locality in Australian Capital Territory covered by postcode 2905. Postcode 2905 State or territory Australian Capital Territory (ACT) Region Canberra Add a free Chisholm business listing More business listings in Chisholm Businesses in ChisholmBlossoms Of ChisholmShop 4 Halley St · 0262310822Caroline Chisholm High School108 Hambidge Cres · 02 62057277Chisholm Primary SchoolHambidge Crescent · 02 62056055 Common questionsWhat is the postcode for Chisholm?Chisholm, ACT has the postcode 2905.What state is Chisholm in?Chisholm is in Australian Capital Territory (ACT).Does postcode 2905 cover more than one suburb?Yes. Postcode 2905 covers 7 localities, so the postcode alone does not identify Chisholm. Browse other postcodes in Australian Capital Territory, or widen the search to every Australian postcode.