Home Postcode finder QLD North Arm North Arm postcode QLD North Arm is a locality in Queensland covered by postcode 4561. Postcode 4561 State or territory Queensland (QLD) Region Sunshine Coast Add a free North Arm business listing Be the first listing in North Arm Common questionsWhat is the postcode for North Arm?North Arm, QLD has the postcode 4561.What state is North Arm in?North Arm is in Queensland (QLD).Does postcode 4561 cover more than one suburb?Yes. Postcode 4561 covers 7 localities, so the postcode alone does not identify North Arm. Browse other postcodes in Queensland, or widen the search to every Australian postcode.