(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 78,000 | 82,000 | 95.12% | Illapel (Territorial Prelature) | 2004 | ap2005 |
| 2 | 127,331 | 154,278 | 82.53% | Calama (Territorial Prelature) | 2004 | ap2005 |
| 3 | 428,702 | 521,529 | 82.20% | La Serena (Archdiocese) | 2004 | ap2005 |
| 4 | 226,487 | 282,580 | 80.15% | Valdivia | 2004 | ap2005 |
| 5 | 385,970 | 482,462 | 80.00% | Melipilla | 2004 | ap2005 |
| 6 | 247,224 | 309,028 | 80.00% | San Felipe | 2004 | ap2005 |
| 7 | 624,501 | 780,627 | 80.00% | Rancagua | 2004 | ap2005 |
| 8 | 918,488 | 1,148,111 | 80.00% | Valparaíso | 2004 | ap2005 |
| 9 | 120,208 | 150,826 | 79.70% | Punta Arenas | 2004 | ap2005 |
| 10 | 71,898 | 90,300 | 79.62% | Aysén (Vicariate Apostolic) | 2004 | ap2005 |
| 11 | 462,950 | 586,520 | 78.93% | Talca | 2004 | ap2005 |
| 12 | 116,625 | 151,620 | 76.92% | San Carlos de Ancud | 2004 | ap2005 |
| 13 | 147,490 | 194,640 | 75.78% | Arica | 2004 | ap2005 |
| 14 | 271,038 | 361,384 | 75.00% | Linares | 2004 | ap2005 |
| 15 | 576,000 | 800,000 | 72.00% | San Bernardo | 2004 | ap2005 |
| 16 | 258,972 | 361,138 | 71.71% | Antofagasta (Archdiocese) | 2004 | ap2005 |
| 17 | 235,097 | 329,776 | 71.29% | Puerto Montt (Archdiocese) | 2004 | ap2005 |
| 18 | 270,000 | 385,000 | 70.13% | Villarrica | 2004 | ap2005 |
| 19 | 305,200 | 436,002 | 70.00% | Chillán | 2004 | ap2005 |
| 20 | 178,035 | 254,336 | 70.00% | Copiapó | 2004 | ap2005 |
| 21 | 3,559,081 | 5,128,359 | 69.40% | Santiago de Chile (Archdiocese) | 2004 | ap2005 |
| 22 | 221,040 | 333,007 | 66.38% | Los Angeles | 2004 | ap2005 |
| 23 | 363,204 | 563,981 | 64.40% | Temuco | 2004 | ap2005 |
| 24 | 124,447 | 238,000 | 52.29% | Iquique | 2004 | ap2005 |
| 25 | 599,150 | 1,150,000 | 52.10% | Concepción (Santissima Concezione) (Archdiocese) | 2004 | ap2005 |
| 26 | 113,159 | 221,509 | 51.09% | Osorno | 2004 | ap2005 |
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