Home Postcode finder WA Carnamah Carnamah postcode WA Carnamah is a locality in Western Australia covered by postcode 6517. Postcode 6517 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Carnamah business listing More business listings in Carnamah Businesses in CarnamahCarnamah District High School48 McPherson St · 08 99511266 Common questionsWhat is the postcode for Carnamah?Carnamah, WA has the postcode 6517.What state is Carnamah in?Carnamah is in Western Australia (WA).Does postcode 6517 cover more than one suburb?No. Postcode 6517 covers Carnamah only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.