(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 474,959 | 593,548 | 80.02% | Ponce | 2004 | ap2005 |
| 2 | 376,000 | 491,518 | 76.50% | Mayagüez | 2004 | ap2005 |
| 3 | 1,064,622 | 1,419,496 | 75.00% | San Juan de Puerto Rico (Archdiocese) | 2004 | ap2005 |
| 4 | 515,000 | 717,912 | 71.74% | Caguas | 2004 | ap2005 |
| 5 | 370,000 | 603,469 | 61.31% | Arecibo | 2004 | ap2005 |
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