Home Postcode finder WA Armadale Armadale postcode WA Armadale is a locality in Western Australia covered by postcode 6112. Postcode 6112 State or territory Western Australia (WA) Region North West Suburbs Add a free Armadale business listing More business listings in Armadale Businesses in Armadale7Eleven Carpet Cleaning ArmadaleArmadale Western Australia 6112, Australia · 0861852731Acorn Dental Centre10-47 William Street · 0894974777Anitone Animal Supplements4/12 Keates Rd, Armadale WA 6112, Australia · (08) 9399 6023 Common questionsWhat is the postcode for Armadale?Armadale, WA has the postcode 6112.What state is Armadale in?Armadale is in Western Australia (WA).Does postcode 6112 cover more than one suburb?Yes. Postcode 6112 covers 12 localities, so the postcode alone does not identify Armadale. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.