(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 347,902 | 350,000 | 99.40% | Concepción (Santissima Concezione) en Paraguay | 2004 | ap2005 |
| 2 | 290,140 | 293,500 | 98.86% | Villarrica del Espíritu Santo | 2004 | ap2005 |
| 3 | 198,000 | 201,000 | 98.51% | San Juan Bautista de las Misiones | 2004 | ap2005 |
| 4 | 590,000 | 600,100 | 98.32% | Ciudad del Este | 2004 | ap2005 |
| 5 | 230,125 | 234,803 | 98.01% | Caacupé | 2004 | ap2005 |
| 6 | 77,950 | 83,100 | 93.80% | Benjamín Aceval | 2004 | ap2005 |
| 7 | 415,000 | 450,000 | 92.22% | Coronel Oviedo | 2004 | ap2005 |
| 8 | 350,000 | 380,787 | 91.91% | San Pedro | 2004 | ap2005 |
| 9 | 18,000 | 19,606 | 91.81% | Chaco Paraguayo (Vicariate Apostolic) | 2004 | ap2005 |
| 10 | 206,000 | 226,514 | 90.94% | Carapeguá | 2004 | ap2005 |
| 11 | 1,350,000 | 1,500,000 | 90.00% | Asunción (Archdiocese) | 2004 | ap2005 |
| 12 | 713,136 | 792,374 | 90.00% | San Lorenzo | 2004 | ap2005 |
| 13 | 420,356 | 519,769 | 80.87% | Encarnación | 2004 | ap2005 |
| 14 | 35,000 | 75,000 | 46.67% | Pilcomayo (Vicariate Apostolic) | 2004 | ap2005 |
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