Argentina Postal Codes Postal Codes of Argentina:Buenos AiresCatamarcaChacoChubutCordobaCorrientesEntre RiosFormosaJujuyLa PampaLa RiojaMendozaMisionesNeuquenRio NegroSaltaSan JuanSan LuisSanta CruzSanta FeSantiago Del EsteroTierra Del FuegoTucuman About Argentina Capital: Buenos Aires Currency: Peso (ARS) Languages: Spanish (official), Italian, English, German, French, indigenous (Mapudungun, Quechua) Population: 41,343,201 Area: 2,766,890 KM2