The Diocese of Great Falls-Billings comprises the eastern two-thirds of the State of Montana and includes churches, missions and chapels of occasional worship from Gardiner to Plentywood and from Fort Shaw to Wibaux.
The Diocesan Mission Statement states: "We, the people of the Roman Catholic Diocese of Great Falls-Billings, from diverse backgrounds yet guided by the same Spirit, are working together in Eastern Montana to forge new dimensions in our church. The sacred richness of our land and people shapes us. Rooted in the Eucharist and Catholic Tradition, we are living witnesses who struggle to embody the values of Christ's reign. We commit ourselves to discover and make known God's presence in our world by living the Gospel joyfully, working for justice and peace, and contiuing our spiritual growth through a lifetime."