Home Postcode finder NSW Pennant Hills Pennant Hills postcode NSW Pennant Hills is a locality in New South Wales covered by postcode 2120. Postcode 2120 State or territory New South Wales (NSW) Region Pymble Add a free Pennant Hills business listing More business listings in Pennant Hills Businesses in Pennant HillsAbsolute Environmental Services38 Thorn St · 0425 257 142Absolute Locating Services38 Thorn St · (02) 9939 6978BadgesPO Box 435 · (+61 2) 9481 8199 Common questionsWhat is the postcode for Pennant Hills?Pennant Hills, NSW has the postcode 2120.What state is Pennant Hills in?Pennant Hills is in New South Wales (NSW).Does postcode 2120 cover more than one suburb?Yes. Postcode 2120 covers 3 localities, so the postcode alone does not identify Pennant Hills. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.