Home Postcode finder VIC Loch Loch postcode VIC Loch is a locality in Victoria covered by postcode 3945. Postcode 3945 State or territory Victoria (VIC) Region Vic Far Country Add a free Loch business listing More business listings in Loch Businesses in LochLoch Primary School2 Victoria Rd · 03 56594254 Common questionsWhat is the postcode for Loch?Loch, VIC has the postcode 3945.What state is Loch in?Loch is in Victoria (VIC).Does postcode 3945 cover more than one suburb?Yes. Postcode 3945 covers 4 localities, so the postcode alone does not identify Loch. Browse other postcodes in Victoria, or widen the search to every Australian postcode.