Home Postcode finder QLD Keysland Keysland postcode QLD Keysland is a locality in Queensland covered by postcode 4612. Postcode 4612 State or territory Queensland (QLD) Region Toowoomba Region Add a free Keysland business listing Be the first listing in Keysland Common questionsWhat is the postcode for Keysland?Keysland, QLD has the postcode 4612.What state is Keysland in?Keysland is in Queensland (QLD).Does postcode 4612 cover more than one suburb?Yes. Postcode 4612 covers 5 localities, so the postcode alone does not identify Keysland. Browse other postcodes in Queensland, or widen the search to every Australian postcode.