Home Postcode finder NSW Oaky Park Oaky Park postcode NSW Oaky Park is a locality in New South Wales covered by postcode 2790. Postcode 2790 State or territory New South Wales (NSW) Region NSW Country West Add a free Oaky Park business listing Be the first listing in Oaky Park Common questionsWhat is the postcode for Oaky Park?Oaky Park, NSW has the postcode 2790.What state is Oaky Park in?Oaky Park is in New South Wales (NSW).Does postcode 2790 cover more than one suburb?Yes. Postcode 2790 covers 40 localities, so the postcode alone does not identify Oaky Park. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.