Home Postcode finder NSWDL Adamstown Adamstown postcode NSWDL Adamstown is a locality in New South Wales covered by postcode 2289. Postcode 2289 State or territory New South Wales (NSWDL) Region Hunter Add a free Adamstown business listing More business listings in Adamstown Businesses in AdamstownAdamstown Public School1a Bryant St · 02 49571114Australian Plantation Shutters85 Fletcher Street · 02 4957 2280Belair Public SchoolCarolyn St · 02 49521735 Common questionsWhat is the postcode for Adamstown?Adamstown, NSWDL has the postcode 2289.What state is Adamstown in?Adamstown is in New South Wales (NSWDL).Does postcode 2289 cover more than one suburb?Yes. Postcode 2289 covers 7 localities, so the postcode alone does not identify Adamstown. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.