Home Postcodes by state VIC 3944 Postcode 3944 3944 is the postcode for Portsea, VIC. Localities with postcode 3944PortseaVIC Postcode 3944 State or territory Victoria (VIC) Localities 1 Council area Mornington Peninsula Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3943 · Postcode 3945