Home Postcodes by state VIC 3193 Postcode 3193 3193 is the postcode for 4 localities in VIC: Beaumaris, Black Rock, Black Rock North and Cromer. Localities with postcode 3193BeaumarisVICBlack RockVICBlack Rock NorthVICCromerVIC Postcode 3193 State or territory Victoria (VIC) Localities 4 Council area Bayside Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3192 · Postcode 3194