Home Postcodes by state QLD 4820 Postcode 4820 4820 is the postcode for 21 localities in QLD: Alabama Hill, Balfes Creek, Basalt, Black Jack, Breddan, Broughton and 15 more. Localities with postcode 4820Alabama HillQLDBalfes CreekQLDBasaltQLDBlack JackQLDBreddanQLDBroughtonQLDCampaspeQLDCharters TowersQLDColumbiaQLDDotswoodQLDGrand SecretQLDLissnerQLDLlanarthQLDMillchesterQLDMosman ParkQLDQueentonQLDRichmond HillQLDSeventy MileQLDSouthern CrossQLDTollQLDTowers HillQLD Postcode 4820 State or territory Queensland (QLD) Localities 21 Council area Charters Towers Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4819 · Postcode 4821