Area in Square Miles. Populations. Buenos Aires City 72 1,125,693 " " Province 117,777 1,550,372 Santa Fé 50,916 751,298 Entre Rios 28,784 383,816 Corrientes 32,580 315,234 La Rioja 34,546 85,388 Catamarca 47,531 109,434 San Juan 33,715 110,035 Mendoza 56,502 201,467 Cordoba 62,160 540,866 San Luis 28,535 106,315 Santiago del Estero 39,764 193,211 Tucuman 8,926 295,213 Salta 62,184 143,629 Jujuy 18,997 59,317 TERRITORIES. Misiones 11,282 41,814 Formosa 41,402 14,186 El Chaco 52,741 27,414 Pampa 56,320 70,388 Rio Negro 75,924 28,166 Nequen 42,345 29,793 Chubut 93,427 17,561 Santa Cruz 109,142 4,927 Tierra del Fuego 8,299 1,703 Los Andes 21,989 2,768