Home Postcode finder VIC King Valley King Valley postcode VIC King Valley is a locality in Victoria covered by postcode 3678. Postcode 3678 State or territory Victoria (VIC) Region Vic Far Country Add a free King Valley business listing Be the first listing in King Valley Common questionsWhat is the postcode for King Valley?King Valley, VIC has the postcode 3678.What state is King Valley in?King Valley is in Victoria (VIC).Does postcode 3678 cover more than one suburb?Yes. Postcode 3678 covers 35 localities, so the postcode alone does not identify King Valley. Browse other postcodes in Victoria, or widen the search to every Australian postcode.