Home Postcode finder QLD Biddeston Biddeston postcode QLD Biddeston is a locality in Queensland covered by postcode 4401. Postcode 4401 State or territory Queensland (QLD) Region Toowoomba Region Add a free Biddeston business listing More business listings in Biddeston Businesses in BiddestonBiddeston Engineering984 Oakey Biddeston Rd, Biddeston QLD 4401, Australia · 0400 395 548Biddeston State SchoolLot 203 Toowoomba/Cecil Plains Rd · 07 46916145 Common questionsWhat is the postcode for Biddeston?Biddeston, QLD has the postcode 4401.What state is Biddeston in?Biddeston is in Queensland (QLD).Does postcode 4401 cover more than one suburb?Yes. Postcode 4401 covers 16 localities, so the postcode alone does not identify Biddeston. Browse other postcodes in Queensland, or widen the search to every Australian postcode.