Home Postcode finder VIC Costerfield Costerfield postcode VIC Costerfield is a locality in Victoria covered by postcode 3523. Postcode 3523 State or territory Victoria (VIC) Region Vic Far Country Add a free Costerfield business listing Be the first listing in Costerfield Common questionsWhat is the postcode for Costerfield?Costerfield, VIC has the postcode 3523.What state is Costerfield in?Costerfield is in Victoria (VIC).Does postcode 3523 cover more than one suburb?Yes. Postcode 3523 covers 10 localities, so the postcode alone does not identify Costerfield. Browse other postcodes in Victoria, or widen the search to every Australian postcode.