Home Postcodes by state QLD 4501 Postcode 4501 4501 is the postcode for Lawnton, QLD. Localities with postcode 4501LawntonQLD Postcode 4501 State or territory Queensland (QLD) Localities 1 Council area Moreton Bay Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4500 · Postcode 4502