Home Postcode finder QLD Summerholm Summerholm postcode QLD Summerholm is a locality in Queensland covered by postcode 4341. Postcode 4341 State or territory Queensland (QLD) Region Western Suburbs Add a free Summerholm business listing Be the first listing in Summerholm Common questionsWhat is the postcode for Summerholm?Summerholm, QLD has the postcode 4341.What state is Summerholm in?Summerholm is in Queensland (QLD).Does postcode 4341 cover more than one suburb?Yes. Postcode 4341 covers 16 localities, so the postcode alone does not identify Summerholm. Browse other postcodes in Queensland, or widen the search to every Australian postcode.