Home Postcodes by state QLD 4344 Postcode 4344 4344 is the postcode for 12 localities in QLD: Carpendale, Egypt, Flagstone Creek, Helidon, Helidon Spa, Iredale and 6 more. Localities with postcode 4344CarpendaleQLDEgyptQLDFlagstone CreekQLDHelidonQLDHelidon SpaQLDIredaleQLDLilydaleQLDLockyerQLDRockmountQLDSeventeen MileQLDStockyardQLDUpper FlagstoneQLD Postcode 4344 State or territory Queensland (QLD) Localities 12 Council area Lockyer Valley Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4343 · Postcode 4345