Home Postcode finder ACT O'Malley O'Malley postcode ACT O'Malley is a locality in Australian Capital Territory covered by postcode 2606. Postcode 2606 State or territory Australian Capital Territory (ACT) Region Canberra Add a free O'Malley business listing Be the first listing in O'Malley Common questionsWhat is the postcode for O'Malley?O'Malley, ACT has the postcode 2606.What state is O'Malley in?O'Malley is in Australian Capital Territory (ACT).Does postcode 2606 cover more than one suburb?Yes. Postcode 2606 covers 6 localities, so the postcode alone does not identify O'Malley. Browse other postcodes in Australian Capital Territory, or widen the search to every Australian postcode.