Home Postcode finder VIC Somerton Park Somerton Park postcode VIC Somerton Park is a locality in Victoria covered by postcode 3851. Postcode 3851 State or territory Victoria (VIC) Region Vic Far Country Add a free Somerton Park business listing Be the first listing in Somerton Park Common questionsWhat is the postcode for Somerton Park?Somerton Park, VIC has the postcode 3851.What state is Somerton Park in?Somerton Park is in Victoria (VIC).Does postcode 3851 cover more than one suburb?Yes. Postcode 3851 covers 27 localities, so the postcode alone does not identify Somerton Park. Browse other postcodes in Victoria, or widen the search to every Australian postcode.