Home Postcode finder WA Serpentine Serpentine postcode WA Serpentine is a locality in Western Australia covered by postcode 6125. Postcode 6125 State or territory Western Australia (WA) Region North West Suburbs Add a free Serpentine business listing More business listings in Serpentine Businesses in Serpentine Village Green TurfPerth Metro · 1300 733 080Dobson Excavations78 Lewis Road · 04 1475 5306Greenacres Turf GroupLot 503 Henderson Road · 08 9525 8822 Common questionsWhat is the postcode for Serpentine?Serpentine, WA has the postcode 6125.What state is Serpentine in?Serpentine is in Western Australia (WA).Does postcode 6125 cover more than one suburb?Yes. Postcode 6125 covers 3 localities, so the postcode alone does not identify Serpentine. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.