Home Postcode finder QLD Westgrove Westgrove postcode QLD Westgrove is a locality in Queensland covered by postcode 4454. Postcode 4454 State or territory Queensland (QLD) Region Toowoomba Region Add a free Westgrove business listing Be the first listing in Westgrove Common questionsWhat is the postcode for Westgrove?Westgrove, QLD has the postcode 4454.What state is Westgrove in?Westgrove is in Queensland (QLD).Does postcode 4454 cover more than one suburb?Yes. Postcode 4454 covers 11 localities, so the postcode alone does not identify Westgrove. Browse other postcodes in Queensland, or widen the search to every Australian postcode.