It is a metropolitan archdiocese with 13 suffragan sees in the country, including two Eastern Catholic eparchies.

On 13 March 2013, Cardinal Archbishop Jorge Mario Bergoglio was elected pope, taking the name of Francis.

On 22 July 2024, the primatial see of Argentina was transferred to the Archdiocese of Santiago del Estero .

At the beginning of the twentieth century, Buenos Aires was the second largest Catholic city in the world after Paris.

[5][6] In 2014 the Archdiocese pastorally served 2,721,000 Catholics (91.6% of 2,971,000 total) in an area of 205 km2 in 186 parishes and 183 missions with 783 priests (456 diocesan, 327 religious), 11 deacons, 1,915 lay religious (477 brothers, 1,438 sisters) and 53 seminarians.