Home Postcode finder WA Martin Martin postcode WA Martin is a locality in Western Australia covered by postcode 6110. Postcode 6110 State or territory Western Australia (WA) Region North West Suburbs Add a free Martin business listing More business listings in Martin Businesses in MartinAquapax PerthDouglas Road · (0412) 588 381Mills Road Dental Centre125 Mills Road West · (08) 9398 3930 Common questionsWhat is the postcode for Martin?Martin, WA has the postcode 6110.What state is Martin in?Martin is in Western Australia (WA).Does postcode 6110 cover more than one suburb?Yes. Postcode 6110 covers 4 localities, so the postcode alone does not identify Martin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.