Home Postcode finder NSW Lucas Heights Lucas Heights postcode NSW Lucas Heights is a locality in New South Wales covered by postcode 2234. Postcode 2234 State or territory New South Wales (NSW) Region Illawarra Add a free Lucas Heights business listing More business listings in Lucas Heights Businesses in Lucas HeightsKU ANSTO Children's CentreNOW OPEN at ANSTO Lucas Heights Campus New Illawarra Road · 02 9717 7830 Common questionsWhat is the postcode for Lucas Heights?Lucas Heights, NSW has the postcode 2234.What state is Lucas Heights in?Lucas Heights is in New South Wales (NSW).Does postcode 2234 cover more than one suburb?Yes. Postcode 2234 covers 7 localities, so the postcode alone does not identify Lucas Heights. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.