Home Postcode finder NSW Martindale Martindale postcode NSW Martindale is a locality in New South Wales covered by postcode 2328. Postcode 2328 State or territory New South Wales (NSW) Region Hunter Add a free Martindale business listing Be the first listing in Martindale Common questionsWhat is the postcode for Martindale?Martindale, NSW has the postcode 2328.What state is Martindale in?Martindale is in New South Wales (NSW).Does postcode 2328 cover more than one suburb?Yes. Postcode 2328 covers 10 localities, so the postcode alone does not identify Martindale. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.