Home Postcode finder WA Singleton Singleton postcode WA Singleton is a locality in Western Australia covered by postcode 6175. Postcode 6175 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Singleton business listing More business listings in Singleton Businesses in SingletonAZAP Electrical5 · 0422 895 094Mandurah Wreckers- Car Scrappers PerthMandurah Rd · 0499223248Singleton Primary SchoolNaval Ave · 08 95373199 Common questionsWhat is the postcode for Singleton?Singleton, WA has the postcode 6175.What state is Singleton in?Singleton is in Western Australia (WA).Does postcode 6175 cover more than one suburb?No. Postcode 6175 covers Singleton only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.