Home Postcode finder QLD Koumala Koumala postcode QLD Koumala is a locality in Queensland covered by postcode 4738. Postcode 4738 State or territory Queensland (QLD) Region Central QLD Add a free Koumala business listing More business listings in Koumala Businesses in KoumalaKoumala State School10 Bull St · 07 49498111 Common questionsWhat is the postcode for Koumala?Koumala, QLD has the postcode 4738.What state is Koumala in?Koumala 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 Koumala. Browse other postcodes in Queensland, or widen the search to every Australian postcode.