Home Postcode finder NSW Bonnet Bay Bonnet Bay postcode NSW Bonnet Bay is a locality in New South Wales covered by postcode 2226. Postcode 2226 State or territory New South Wales (NSW) Region Illawarra Add a free Bonnet Bay business listing More business listings in Bonnet Bay Businesses in Bonnet BayBonnet Bay Public SchoolTudar Rd · 02 95284111 Common questionsWhat is the postcode for Bonnet Bay?Bonnet Bay, NSW has the postcode 2226.What state is Bonnet Bay in?Bonnet Bay is in New South Wales (NSW).Does postcode 2226 cover more than one suburb?Yes. Postcode 2226 covers 3 localities, so the postcode alone does not identify Bonnet Bay. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.