Home Postcode finder VIC Marnoo Marnoo postcode VIC Marnoo is a locality in Victoria covered by postcode 3387. Postcode 3387 State or territory Victoria (VIC) Region Vic Far Country Add a free Marnoo business listing More business listings in Marnoo Businesses in MarnooMarnoo Primary SchoolNewall St · 03 53592313 Common questionsWhat is the postcode for Marnoo?Marnoo, VIC has the postcode 3387.What state is Marnoo in?Marnoo is in Victoria (VIC).Does postcode 3387 cover more than one suburb?Yes. Postcode 3387 covers 11 localities, so the postcode alone does not identify Marnoo. Browse other postcodes in Victoria, or widen the search to every Australian postcode.