Home Postcode finder NSW Katoomba Katoomba postcode NSW Katoomba is a locality in New South Wales covered by postcode 2780. Postcode 2780 State or territory New South Wales (NSW) Region Nepean Add a free Katoomba business listing More business listings in Katoomba Businesses in KatoombaBag Mart Australia PO Box 747 Katoomba NSW 2780 · 02 8213 7308Expert Electrical ServicesKatoomba Blue Mountains, NSW 2780, Australia · +61 432 170 800Frame-Tek Group32 Woodlands Road, Katoomba NSW 2780, Australia · 1300 137 263 Common questionsWhat is the postcode for Katoomba?Katoomba, NSW has the postcode 2780.What state is Katoomba in?Katoomba is in New South Wales (NSW).Does postcode 2780 cover more than one suburb?Yes. Postcode 2780 covers 3 localities, so the postcode alone does not identify Katoomba. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.