Its territorial remit includes the eastern parts of Bosnia and Herzegovina and the entirety of the Republic of North Macedonia.

[6][7] In the 13th and 14th centuries, the Bishops of Bosnia were mainly Dominican missionaries who were sent in to combat the spread of the Bosnian Church.

[8] At the turn of the 14th century, the Franciscans also arrived with the same purpose, at first in Usora and Soli, at the request of Stephen Dragutin of Serbia.

[9] The two orders engaged in a prolonged dispute over the control of the province, in which the Franciscans ultimately prevailed, yet the weakened diocese still succumbed to the Ottoman conquest of Bosnia in 1463.

[11] On 5 July 1881, Pope Leo XIII issued Ex hac augusta Principis Apostolorum cathedra, a bull by which he restored the regular Church hierarchy in Bosnia and Herzegovina.

The biggest struggle has been the exodus of Croats, causing the Catholic population in the diocese to drop to less than half of what it was before the conflict.