1 Buenos Aires City + 24 partidos in Buenos Aires Province 12,789,000 Pampas 2 Córdoba Córdoba 1,372,000 Pampas 3 Rosario Santa Fe 1,242,000 Pampas 4 Mendoza Mendoza 885,000 Cuyo 5 San Miguel de Tucumán Tucumán 789,000  NOA (northwest)  6 La Plata Buenos Aires 732,000 Pampas 7 Mar del Plata Buenos Aires 604,000