Home Postcode finder NSW Warnervale Warnervale postcode NSW Warnervale is a locality in New South Wales covered by postcode 2259. Postcode 2259 State or territory New South Wales (NSW) Region Gosford Add a free Warnervale business listing More business listings in Warnervale Businesses in WarnervaleEthical Care Sea Buckthorn OilEthical Care Sea Buckthorn Oil · 1800-788-826Lakes Grammar - An Anglican SchoolCnr Sparks Rd & Albert Warner Drive · 02 43934111Mackillop Catholic College91 Sparks Rd · 02 43929399 Common questionsWhat is the postcode for Warnervale?Warnervale, NSW has the postcode 2259.What state is Warnervale in?Warnervale is in New South Wales (NSW).Does postcode 2259 cover more than one suburb?Yes. Postcode 2259 covers 42 localities, so the postcode alone does not identify Warnervale. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.