Home Postcode finder QLD Strathfield Strathfield postcode QLD Strathfield is a locality in Queensland covered by postcode 4742. Postcode 4742 State or territory Queensland (QLD) Region Central QLD Add a free Strathfield business listing Be the first listing in Strathfield Common questionsWhat is the postcode for Strathfield?Strathfield, QLD has the postcode 4742.What state is Strathfield in?Strathfield is in Queensland (QLD).Does postcode 4742 cover more than one suburb?Yes. Postcode 4742 covers 11 localities, so the postcode alone does not identify Strathfield. Browse other postcodes in Queensland, or widen the search to every Australian postcode.