Home Postcode finder NSW Twelve Mile Creek Twelve Mile Creek postcode NSW Twelve Mile Creek is a locality in New South Wales covered by postcode 2324. Postcode 2324 State or territory New South Wales (NSW) Region Hunter Add a free Twelve Mile Creek business listing Be the first listing in Twelve Mile Creek Common questionsWhat is the postcode for Twelve Mile Creek?Twelve Mile Creek, NSW has the postcode 2324.What state is Twelve Mile Creek in?Twelve Mile Creek is in New South Wales (NSW).Does postcode 2324 cover more than one suburb?Yes. Postcode 2324 covers 22 localities, so the postcode alone does not identify Twelve Mile Creek. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.