Home Postcode finder WA Mcbeath Mcbeath postcode WA Mcbeath is a locality in Western Australia covered by postcode 6770. Postcode 6770 State or territory Western Australia (WA) Region North West Suburbs Add a free Mcbeath business listing Be the first listing in Mcbeath Common questionsWhat is the postcode for Mcbeath?Mcbeath, WA has the postcode 6770.What state is Mcbeath in?Mcbeath is in Western Australia (WA).Does postcode 6770 cover more than one suburb?Yes. Postcode 6770 covers 7 localities, so the postcode alone does not identify Mcbeath. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.