Home Postcode finder VIC Johnstones Hill Johnstones Hill postcode VIC Johnstones Hill is a locality in Victoria covered by postcode 3870. Postcode 3870 State or territory Victoria (VIC) Region Vic Far Country Add a free Johnstones Hill business listing Be the first listing in Johnstones Hill Common questionsWhat is the postcode for Johnstones Hill?Johnstones Hill, VIC has the postcode 3870.What state is Johnstones Hill in?Johnstones Hill is in Victoria (VIC).Does postcode 3870 cover more than one suburb?Yes. Postcode 3870 covers 5 localities, so the postcode alone does not identify Johnstones Hill. Browse other postcodes in Victoria, or widen the search to every Australian postcode.