Home Postcodes by state VIC 3121 Postcode 3121 3121 is the postcode for 7 localities in VIC: Burnley, Burnley North, Cremorne, Richmond, Richmond East, Richmond North and 1 more. Localities with postcode 3121BurnleyVICBurnley NorthVICCremorneVICRichmondVICRichmond EastVICRichmond NorthVICRichmond SouthVIC Postcode 3121 State or territory Victoria (VIC) Localities 7 Council area Yarra Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3116 · Postcode 3122