Home Postcode finder VIC Riddells Creek Riddells Creek postcode VIC Riddells Creek is a locality in Victoria covered by postcode 3431. Postcode 3431 State or territory Victoria (VIC) Region Melbourne North West Add a free Riddells Creek business listing More business listings in Riddells Creek Businesses in Riddells CreekRiddells Creek Primary School69-77 Main Rd · 03 54287277 Common questionsWhat is the postcode for Riddells Creek?Riddells Creek, VIC has the postcode 3431.What state is Riddells Creek in?Riddells Creek is in Victoria (VIC).Does postcode 3431 cover more than one suburb?No. Postcode 3431 covers Riddells Creek only, which is unusual - most Australian postcodes cover several localities. Browse other postcodes in Victoria, or widen the search to every Australian postcode.