Home Postcode finder NSW Umina Beach Umina Beach postcode NSW Umina Beach is a locality in New South Wales covered by postcode 2257. Postcode 2257 State or territory New South Wales (NSW) Region Gosford Add a free Umina Beach business listing More business listings in Umina Beach Businesses in Umina BeachBrisbane Water Secondary CollegeVeron Rd · 02 43419066Momentum Insulation Pty Ltd2257 Australia Avenue, Umina Beach NSW, Australia · 0420 799 746mycar Tyre & Auto CE UminaShell Coles Express Service Station, 1-3 Sydney Avenue (Corner of Ocean Beach Road), Umina Beach, Ne · (02) 9212 8950 Common questionsWhat is the postcode for Umina Beach?Umina Beach, NSW has the postcode 2257.What state is Umina Beach in?Umina Beach is in New South Wales (NSW).Does postcode 2257 cover more than one suburb?Yes. Postcode 2257 covers 12 localities, so the postcode alone does not identify Umina Beach. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.