Home Postcode finder VIC Richmond Plains Richmond Plains postcode VIC Richmond Plains is a locality in Victoria covered by postcode 3518. Postcode 3518 State or territory Victoria (VIC) Region Vic Far Country Add a free Richmond Plains business listing Be the first listing in Richmond Plains Common questionsWhat is the postcode for Richmond Plains?Richmond Plains, VIC has the postcode 3518.What state is Richmond Plains in?Richmond Plains is in Victoria (VIC).Does postcode 3518 cover more than one suburb?Yes. Postcode 3518 covers 16 localities, so the postcode alone does not identify Richmond Plains. Browse other postcodes in Victoria, or widen the search to every Australian postcode.