Home Postcode finder QLD Blythdale Blythdale postcode QLD Blythdale is a locality in Queensland covered by postcode 4455. Postcode 4455 State or territory Queensland (QLD) Region Toowoomba Region Add a free Blythdale business listing Be the first listing in Blythdale Common questionsWhat is the postcode for Blythdale?Blythdale, QLD has the postcode 4455.What state is Blythdale in?Blythdale is in Queensland (QLD).Does postcode 4455 cover more than one suburb?Yes. Postcode 4455 covers 19 localities, so the postcode alone does not identify Blythdale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.