Córdoba is a city in central Argentina, in the foothills of the Sierras Chicas on the Suquía River, about 700 km northwest of Buenos Aires. It is th…Córdoba is a city in central Argentina, in the foothills of the Sierras Chicas on the Suquía River, about 700 km northwest of Buenos Aires. It is the capital of Córdoba Province and the second-most populous city in Argentina after Buenos Aires, with about 1.6 million urban inhabitants according to the 2020 census.