Home Postcode finder NSWDL St Clair St Clair postcode NSWDL St Clair is a locality in New South Wales covered by postcode 2330. Postcode 2330 State or territory New South Wales (NSWDL) Region Hunter Add a free St Clair business listing More business listings in St Clair Businesses in St ClairBanks Public School182 Banks Dr · 02 96706506Blackwell Public School58 Blackwell Ave · 02 96705080Centres OnlinePO Box 203 · 1300805506 Common questionsWhat is the postcode for St Clair?St Clair, NSWDL has the postcode 2330.What state is St Clair in?St Clair is in New South Wales (NSWDL).Does postcode 2330 cover more than one suburb?Yes. Postcode 2330 covers 63 localities, so the postcode alone does not identify St Clair. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.