It is based in the capital city of Niamey and was erected on 28 April 1942.
Pope Benedict XVI made it an archdiocese in June 2007.
It performs the Latin Rite and covers approximately 200,000 square kilometres (80,000 sq mi).
Djalwana Laurent Lompo has been the head of the archdiocese since October 2014.
This archdiocese is the metropolitan of a province having one suffragan diocese: Maradi.