Home Postcode finder WA Green Valley Green Valley postcode WA Green Valley is a locality in Western Australia covered by postcode 6330. Postcode 6330 State or territory Western Australia (WA) Region Wa Subs 2 Gsr Add a free Green Valley business listing More business listings in Green Valley Businesses in Green ValleySEO GROUP SHOP57 Baker Street · (08) 9015 5440 Common questionsWhat is the postcode for Green Valley?Green Valley, WA has the postcode 6330.What state is Green Valley in?Green Valley is in Western Australia (WA).Does postcode 6330 cover more than one suburb?Yes. Postcode 6330 covers 50 localities, so the postcode alone does not identify Green Valley. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.