The vicariate covers the Laotian provinces of Champasak, Salavan, Xekong and Attapu, but most of the Catholics live in Champasak and Saravan.
Vikariat tersebut meliputi provinsi-provinsi Champasak, Salavan, Xekong dan Attapu, namun kebanyakan umat Katolik tinggal di Champasak dan Saravan.