Home Postcode finder NSWDL Four Mile Creek Four Mile Creek postcode NSWDL Four Mile Creek is a locality in New South Wales covered by postcode 2323. Postcode 2323 State or territory New South Wales (NSWDL) Region Hunter Add a free Four Mile Creek business listing Be the first listing in Four Mile Creek Common questionsWhat is the postcode for Four Mile Creek?Four Mile Creek, NSWDL has the postcode 2323.What state is Four Mile Creek in?Four Mile Creek is in New South Wales (NSWDL).Does postcode 2323 cover more than one suburb?Yes. Postcode 2323 covers 14 localities, so the postcode alone does not identify Four Mile Creek. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.