(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 395,000 | 454,000 | 87.00% | Basse-Terre (et Pointe-à-Pitre) | 2004 | ap2005 |
| 2 | 224,809 | 287,845 | 78.10% | Willemstad | 2001 | ap2004 |
| 3 | 297,515 | 381,427 | 78.00% | Fort-de-France (e Saint Pierre) (Archdiocese) | 2004 | ap2005 |
| 4 | 208,949 | 273,700 | 76.34% | Belize City-Belmopan | 2004 | ap2005 |
| 5 | 150,000 | 200,000 | 75.00% | Cayenne (Cajenna) | 2004 | ap2005 |
| 6 | 100,243 | 157,775 | 63.54% | Castries (Archdiocese) | 2004 | ap2005 |
| 7 | 42,174 | 73,772 | 57.17% | Roseau | 2004 | ap2005 |
| 8 | 56,034 | 102,634 | 54.60% | Saint George's in Grenada | 2004 | ap2005 |
| 9 | 6,000 | 20,000 | 30.00% | Turks and Caicos (Mission "Sui Iuris") | 2004 | ap2005 |
| 10 | 383,302 | 1,277,675 | 30.00% | Port of Spain (Archdiocese) | 2004 | ap2005 |
| 11 | 110,664 | 481,146 | 23.00% | Paramaribo | 2004 | ap2005 |
| 12 | 48,168 | 320,655 | 15.02% | Nassau (Archdiocese) | 2004 | ap2005 |
| 13 | 9,275 | 66,545 | 13.94% | Hamilton in Bermuda | 2004 | ap2005 |
| 14 | 15,423 | 137,394 | 11.23% | Saint John's-Basseterre | 2004 | ap2005 |
| 15 | 4,304 | 39,029 | 11.03% | Cayman Islands (Mission "Sui Iuris") | 2004 | ap2005 |
| 16 | 88,000 | 800,000 | 11.00% | Georgetown | 2004 | ap2005 |
| 17 | 10,073 | 106,499 | 9.46% | Kingstown | 2004 | ap2005 |
| 18 | 56,000 | 1,400,000 | 4.00% | Kingston in Jamaica (Archdiocese) | 2004 | ap2005 |
| 19 | 10,830 | 271,000 | 4.00% | Bridgetown | 2004 | ap2005 |
| 20 | 14,926 | 822,100 | 1.82% | Montego Bay | 2004 | ap2005 |
| 21 | 8,296 | 575,288 | 1.44% | Mandeville | 2004 | ap2005 |
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