Home Postcode finder QLD Sunnybank Sunnybank postcode QLD Sunnybank is a locality in Queensland covered by postcode 4109. Postcode 4109 State or territory Queensland (QLD) Region Western Suburbs Add a free Sunnybank business listing More business listings in Sunnybank Businesses in SunnybankAutistic Childrens School437 Hellawell Rd · 07 32732222Best Reviews Carpet Cleaning & Pest Control997 Sunnybank 4109 · 433696099Bupa Sunnybank358 Mains Road Common questionsWhat is the postcode for Sunnybank?Sunnybank, QLD has the postcode 4109.What state is Sunnybank in?Sunnybank is in Queensland (QLD).Does postcode 4109 cover more than one suburb?Yes. Postcode 4109 covers 5 localities, so the postcode alone does not identify Sunnybank. Browse other postcodes in Queensland, or widen the search to every Australian postcode.