Home Postcode finder NSW Lidsdale Lidsdale postcode NSW Lidsdale is a locality in New South Wales covered by postcode 2790. Postcode 2790 State or territory New South Wales (NSW) Region NSW Country West Add a free Lidsdale business listing More business listings in Lidsdale Businesses in LidsdaleSheather Mechanical Repairs17 · 0429575402 Common questionsWhat is the postcode for Lidsdale?Lidsdale, NSW has the postcode 2790.What state is Lidsdale in?Lidsdale is in New South Wales (NSW).Does postcode 2790 cover more than one suburb?Yes. Postcode 2790 covers 40 localities, so the postcode alone does not identify Lidsdale. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.