Home Postcode finder WA Haynes Haynes postcode WA Haynes 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 Haynes business listing More business listings in Haynes Businesses in HaynesTapes To Digital HaynesPrindle Rd, Haynes WA, Australia · +61 1300 827 370 Common questionsWhat is the postcode for Haynes?Haynes, WA has the postcode 6112.What state is Haynes in?Haynes 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 Haynes. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.