(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 208,226 | 481,445 | 43.25% | Mostar-Duvno (-Trebinje e Mrkan) | 2004 | ap2005 |
| 2 | 215,482 | 1,950,000 | 11.05% | Vrhbosna {Sarajevo} (Archdiocese) | 2004 | ap2005 |
| 3 | 41,113 | 550,000 | 7.48% | Banja Luka | 2004 | ap2005 |
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