Home Postcode finder VIC Major Plains Major Plains postcode VIC Major Plains is a locality in Victoria covered by postcode 3725. Postcode 3725 State or territory Victoria (VIC) Region Vic Far Country Add a free Major Plains business listing Be the first listing in Major Plains Common questionsWhat is the postcode for Major Plains?Major Plains, VIC has the postcode 3725.What state is Major Plains in?Major Plains is in Victoria (VIC).Does postcode 3725 cover more than one suburb?Yes. Postcode 3725 covers 5 localities, so the postcode alone does not identify Major Plains. Browse other postcodes in Victoria, or widen the search to every Australian postcode.