Home Postcodes by state QLD 4347 Postcode 4347 4347 is the postcode for 5 localities in QLD: Grantham, Ma Ma Creek, Mount Whitestone, Veradilla and Winwill. Localities with postcode 4347GranthamQLDMa Ma CreekQLDMount WhitestoneQLDVeradillaQLDWinwillQLD Postcode 4347 State or territory Queensland (QLD) Localities 5 Council area Lockyer Valley Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4346 · Postcode 4350