Home Postcode finder NSW New Lambton Heights New Lambton Heights postcode NSW New Lambton Heights is a locality in New South Wales covered by postcode 2305. Postcode 2305 State or territory New South Wales (NSW) Region Hunter Add a free New Lambton Heights business listing More business listings in New Lambton Heights Businesses in New Lambton HeightsDr Oliver J. BrownSuite 1.1 · 02 4965 5491John Hunter Hospital SchoolWard H1 John Hunter Hosp · 02 49213378New Lambton Heights Infants School176 Lookout Rd · 02 49572744 Common questionsWhat is the postcode for New Lambton Heights?New Lambton Heights, NSW has the postcode 2305.What state is New Lambton Heights in?New Lambton Heights is in New South Wales (NSW).Does postcode 2305 cover more than one suburb?Yes. Postcode 2305 covers 3 localities, so the postcode alone does not identify New Lambton Heights. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.