Home Postcode finder NSWRV Mullion Mullion postcode NSWRV Mullion is a locality in New South Wales covered by postcode 2582. Postcode 2582 State or territory New South Wales (NSWRV) Region Canberra Add a free Mullion business listing Be the first listing in Mullion Common questionsWhat is the postcode for Mullion?Mullion, NSWRV has the postcode 2582.What state is Mullion in?Mullion is in New South Wales (NSWRV).Does postcode 2582 cover more than one suburb?Yes. Postcode 2582 covers 22 localities, so the postcode alone does not identify Mullion. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.