Home Postcode finder NSW Glenbrook Glenbrook postcode NSW Glenbrook is a locality in New South Wales covered by postcode 2773. Postcode 2773 State or territory New South Wales (NSW) Region Nepean Add a free Glenbrook business listing More business listings in Glenbrook Businesses in GlenbrookGlenbrook Public School6 Woodville St · 02 47391274Lapstone Public SchoolExplorers Rd · 02 47394122St Finbar's Primary School52 Levy St · 02 47391796 Common questionsWhat is the postcode for Glenbrook?Glenbrook, NSW has the postcode 2773.What state is Glenbrook in?Glenbrook is in New South Wales (NSW).Does postcode 2773 cover more than one suburb?Yes. Postcode 2773 covers 2 localities, so the postcode alone does not identify Glenbrook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.