Home Postcode finder QLD Fredericksfield Fredericksfield postcode QLD Fredericksfield is a locality in Queensland covered by postcode 4806. Postcode 4806 State or territory Queensland (QLD) Region North QLD Add a free Fredericksfield business listing Be the first listing in Fredericksfield Common questionsWhat is the postcode for Fredericksfield?Fredericksfield, QLD has the postcode 4806.What state is Fredericksfield in?Fredericksfield is in Queensland (QLD).Does postcode 4806 cover more than one suburb?Yes. Postcode 4806 covers 9 localities, so the postcode alone does not identify Fredericksfield. Browse other postcodes in Queensland, or widen the search to every Australian postcode.