Home Postcode finder NSW New Lambton New Lambton postcode NSW New Lambton 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 business listing More business listings in New Lambton Businesses in New LambtonAdam and Sons Concreting24 Meadow Road, New Lambton NSW, Australia · 0418453356Aussie Floor Kings-Timber Flooring Prices Hunter R19 Hitchcock Ave · 0434220029Aussiefloorkings19 Hitchcock Avenue · 434220029 Common questionsWhat is the postcode for New Lambton?New Lambton, NSW has the postcode 2305.What state is New Lambton in?New Lambton 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. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.