Home Postcodes by state VIC 3523 Postcode 3523 3523 is the postcode for 10 localities in VIC: Argyle, Costerfield, Derrinal, Heathcote, Heathcote South, Knowsley and 4 more. Localities with postcode 3523ArgyleVICCosterfieldVICDerrinalVICHeathcoteVICHeathcote SouthVICKnowsleyVICLadys PassVICMoormbool WestVICMount CamelVICRedcastleVIC Postcode 3523 State or territory Victoria (VIC) Localities 10 Council area Greater Bendigo; Mitchell; Strathbogie; Mainly Campaspe, partly Greater Bendigo Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3522 · Postcode 3525