Home Postcode finder VIC Selwyn Selwyn postcode VIC Selwyn is a locality in Victoria covered by postcode 3737. Postcode 3737 State or territory Victoria (VIC) Region Vic Far Country Add a free Selwyn business listing Be the first listing in Selwyn Common questionsWhat is the postcode for Selwyn?Selwyn, VIC has the postcode 3737.What state is Selwyn in?Selwyn is in Victoria (VIC).Does postcode 3737 cover more than one suburb?Yes. Postcode 3737 covers 14 localities, so the postcode alone does not identify Selwyn. Browse other postcodes in Victoria, or widen the search to every Australian postcode.