Home Postcode finder QLD Farnsfield Farnsfield postcode QLD Farnsfield is a locality in Queensland covered by postcode 4660. Postcode 4660 State or territory Queensland (QLD) Region Sunshine Coast Add a free Farnsfield business listing Be the first listing in Farnsfield Common questionsWhat is the postcode for Farnsfield?Farnsfield, QLD has the postcode 4660.What state is Farnsfield in?Farnsfield is in Queensland (QLD).Does postcode 4660 cover more than one suburb?Yes. Postcode 4660 covers 21 localities, so the postcode alone does not identify Farnsfield. Browse other postcodes in Queensland, or widen the search to every Australian postcode.