(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 1,000,000 | 2,000,000 | 50.00% | Pointe-Noire | 2004 | ap2005 |
| 2 | 418,647 | 719,950 | 58.15% | Brazzaville (Archdiocese) | 2004 | ap2005 |
| 3 | 250,756 | 525,000 | 47.76% | Owando | 2004 | ap2005 |
| 4 | 250,000 | 490,000 | 51.02% | Nkayi | 2004 | ap2005 |
| 5 | 50,000 | 175,000 | 28.57% | Likouala (Prefecture Apostolic) | 2004 | ap2005 |
| 6 | 84,000 | 140,000 | 60.00% | Kinkala | 2004 | ap2005 |
| 7 | 25,000 | 65,600 | 38.11% | Ouesso | 2004 | ap2005 |
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