Home Postcode finder QLD Ilbilbie Ilbilbie postcode QLD Ilbilbie is a locality in Queensland covered by postcode 4738. Postcode 4738 State or territory Queensland (QLD) Region Central QLD Add a free Ilbilbie business listing Be the first listing in Ilbilbie Common questionsWhat is the postcode for Ilbilbie?Ilbilbie, QLD has the postcode 4738.What state is Ilbilbie in?Ilbilbie is in Queensland (QLD).Does postcode 4738 cover more than one suburb?Yes. Postcode 4738 covers 2 localities, so the postcode alone does not identify Ilbilbie. Browse other postcodes in Queensland, or widen the search to every Australian postcode.