(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 2,772,317 | 3,696,422 | 75.00% | Guatemala (Archdiocese) | 2004 | ap2005 |
| 2 | 1,016,000 | 1,270,000 | 80.00% | Los Altos Quetzaltenango-Totonicapán (Archdiocese) | 2004 | ap2005 |
| 3 | 844,996 | 1,056,121 | 80.01% | Verapaz, Cobán | 2004 | ap2005 |
| 4 | 715,704 | 900,283 | 79.50% | San Marcos | 2003 | ap2004 |
| 5 | 700,000 | 1,000,000 | 70.00% | Escuintla | 2004 | ap2005 |
| 6 | 662,333 | 779,216 | 85.00% | Jalapa | 2004 | ap2005 |
| 7 | 639,177 | 798,971 | 80.00% | Sololá-Chimaltenango | 2004 | ap2005 |
| 8 | 583,390 | 772,146 | 75.55% | Huehuetenango | 2004 | ap2005 |
| 9 | 524,408 | 655,510 | 80.00% | Quiché | 2004 | ap2005 |
| 10 | 451,750 | 645,356 | 70.00% | Suchitepéquez-Retalhuleu | 2004 | ap2005 |
| 11 | 436,000 | 547,000 | 79.71% | Zacapa y Santo Cristo de Esquipulas | 2004 | ap2005 |
| 12 | 410,000 | 605,000 | 67.77% | El Petén (Vicariate Apostolic) | 2004 | ap2005 |
| 13 | 302,439 | 355,811 | 85.00% | Santa Rosa de Lima | 2004 | ap2005 |
| 14 | 250,000 | 375,000 | 66.67% | Izabal (Vicariate Apostolic) | 2004 | ap2005 |
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