Home Postcode finder QLD Halifax Halifax postcode QLD Halifax is a locality in Queensland covered by postcode 4850. Postcode 4850 State or territory Queensland (QLD) Region North QLD Add a free Halifax business listing More business listings in Halifax Businesses in HalifaxHalifax State School17 Victoria Terrace · 07 47777132St Peter's School19 Anderssen St · 07 47777431 Common questionsWhat is the postcode for Halifax?Halifax, QLD has the postcode 4850.What state is Halifax in?Halifax is in Queensland (QLD).Does postcode 4850 cover more than one suburb?Yes. Postcode 4850 covers 34 localities, so the postcode alone does not identify Halifax. Browse other postcodes in Queensland, or widen the search to every Australian postcode.