Original: In descending order by number of inhabitants , the major cities in Argentina are Buenos Aires , Córdoba , Rosario , Mendoza , Tucumán , La Plata , Mar del Plata , Salta , Santa Fe , San Juan , Resistencia and Neuquén .
Simplified: In order by number of people , the largest cities in Argentina are Buenos Aires , Córdoba , Rosario , Mendoza , La Plata , Tucumán , Mar del Plata , Salta , Santa Fe , and Bahía Blanca .