Home Postcode finder NSW Lower Portland Lower Portland postcode NSW Lower Portland is a locality in New South Wales covered by postcode 2756. Postcode 2756 State or territory New South Wales (NSW) Region Nepean Add a free Lower Portland business listing Be the first listing in Lower Portland Common questionsWhat is the postcode for Lower Portland?Lower Portland, NSW has the postcode 2756.What state is Lower Portland in?Lower Portland is in New South Wales (NSW).Does postcode 2756 cover more than one suburb?Yes. Postcode 2756 covers 28 localities, so the postcode alone does not identify Lower Portland. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.