Home Postcodes by state VIC 3910 Postcode 3910 3910 is the postcode for Langwarrin, VIC. Localities with postcode 3910LangwarrinVIC Postcode 3910 State or territory Victoria (VIC) Localities 1 Council area Frankston Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3909 · Postcode 3911