(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 3,268,081 | 3,652,546 | 89.47% | Cebu (Archdiocese) | 2004 | ap2005 |
| 2 | 2,800,000 | 3,000,000 | 93.33% | San Fernando (Archdiocese) | 2004 | ap2005 |
| 3 | 2,719,781 | 2,993,000 | 90.87% | Manila (Archdiocese) | 2004 | ap2005 |
| 4 | 2,467,108 | 2,820,350 | 87.48% | Malolos | 2003 | ap2004 |
| 5 | 2,429,663 | 3,037,079 | 80.00% | Antipolo | 2004 | ap2005 |
| 6 | 2,147,042 | 2,608,349 | 82.31% | San Pablo | 2004 | ap2005 |
| 7 | 2,075,972 | 2,419,206 | 85.81% | Imus | 2004 | ap2005 |
| 8 | 2,054,296 | 2,232,931 | 92.00% | Jaro (Archdiocese) | 2004 | ap2005 |
| 9 | 1,843,617 | 1,905,348 | 96.76% | Lipa (Archdiocese) | 2004 | ap2005 |
| 10 | 1,492,984 | 1,658,872 | 90.00% | Novaliches | 2003 | ap2004 |
| 11 | 1,269,122 | 1,381,000 | 91.90% | Parañaque | 2004 | ap2005 |
| 12 | 1,259,610 | 1,488,098 | 84.65% | Tuguegarao (Archdiocese) | 2004 | ap2005 |
| 13 | 1,257,977 | 1,572,472 | 80.00% | Palo (Archdiocese) | 2004 | ap2005 |
| 14 | 1,202,322 | 1,558,826 | 77.13% | Marbel | 2004 | ap2005 |
| 15 | 1,156,277 | 1,214,576 | 95.20% | Caceres (Nueva Caceres) (Archdiocese) | 2004 | ap2005 |
| 16 | 1,109,498 | 1,369,913 | 80.99% | Davao (Archdiocese) | 2004 | ap2005 |
| 17 | 1,106,500 | 1,577,000 | 70.16% | Tagum | 2004 | ap2005 |
| 18 | 1,091,000 | 1,132,281 | 96.35% | Legazpi | 2004 | ap2005 |
| 19 | 1,090,108 | 1,238,760 | 88.00% | Cubao | 2004 | ap2005 |
| 20 | 1,090,108 | 1,221,404 | 89.25% | Kalookan | 2004 | ap2005 |
| 21 | 1,088,855 | 1,338,621 | 81.34% | Malaybalay | 2004 | ap2005 |
| 22 | 1,076,783 | 1,252,073 | 86.00% | Bacolod | 2004 | ap2005 |
| 23 | 1,071,399 | 1,284,478 | 83.41% | Cagayan de Oro (Archdiocese) | 2004 | ap2005 |
| 24 | 1,027,345 | 1,317,110 | 78.00% | Ilagan | 2004 | ap2005 |
| 25 | 1,010,635 | 1,314,507 | 76.88% | Iligan | 2004 | ap2005 |
| 26 | 1,002,000 | 1,215,000 | 82.47% | Lingayen-Dagupan (Archdiocese) | 2004 | ap2005 |
| 27 | 960,407 | 1,210,000 | 79.37% | Pasig | 2004 | ap2005 |
| 28 | 941,387 | 1,134,201 | 83.00% | Tarlac | 2004 | ap2005 |
| 29 | 923,680 | 1,010,896 | 91.37% | Dumaguete | 2004 | ap2005 |
| 30 | 913,000 | 1,805,000 | 50.58% | Cabanatuan | 2004 | ap2005 |
| 31 | 879,735 | 1,167,624 | 75.34% | Butuan | 2004 | ap2005 |
| 32 | 834,322 | 948,093 | 88.00% | Lucena | 2004 | ap2005 |
| 33 | 823,640 | 1,809,618 | 45.51% | Cotabato (Archdiocese) | 2004 | ap2005 |
| 34 | 797,000 | 992,000 | 80.34% | Pagadian | 2004 | ap2005 |
| 35 | 726,827 | 829,157 | 87.66% | Gumaca | 2004 | ap2005 |
| 36 | 725,319 | 853,236 | 85.01% | San Carlos | 2004 | ap2005 |
| 37 | 665,317 | 705,489 | 94.31% | Capiz (Archdiocese) | 2004 | ap2005 |
| 38 | 663,000 | 823,130 | 80.55% | Dipolog | 2004 | ap2005 |
| 39 | 651,930 | 688,903 | 94.63% | Sorsogon | 2004 | ap2005 |
| 40 | 642,931 | 676,770 | 95.00% | Calbayog | 2004 | ap2005 |
| 41 | 641,968 | 802,460 | 80.00% | Digos | 2004 | ap2005 |
| 42 | 631,973 | 685,201 | 92.23% | Masbate | 2004 | ap2005 |
| 43 | 621,027 | 707,676 | 87.76% | Calapan (Vicariate Apostolic) | 2004 | ap2005 |
| 44 | 582,238 | 693,140 | 84.00% | San Fernando de La Union | 2004 | ap2005 |
| 45 | 572,905 | 630,966 | 90.80% | Maasin | 2004 | ap2005 |
| 46 | 572,844 | 621,860 | 92.12% | Talibon | 2004 | ap2005 |
| 47 | 553,057 | 614,508 | 90.00% | Kabankalan | 2004 | ap2005 |
| 48 | 542,920 | 612,461 | 88.65% | Tagbilaran | 2004 | ap2005 |
| 49 | 538,025 | 672,532 | 80.00% | Iba | 2004 | ap2005 |
| 50 | 532,638 | 665,715 | 80.01% | San Jose | 2004 | ap2005 |
| 51 | 531,970 | 625,855 | 85.00% | Urdaneta | 2004 | ap2005 |
| 52 | 528,135 | 621,336 | 85.00% | Balanga | 2004 | ap2005 |
| 53 | 523,813 | 621,923 | 84.22% | Nueva Segovia (Archdiocese) | 2004 | ap2005 |
| 54 | 474,399 | 645,404 | 73.50% | Zamboanga (Archdiocese) | 2004 | ap2005 |
| 55 | 448,491 | 768,466 | 58.36% | Kidapawan | 2004 | ap2005 |
| 56 | 445,573 | 562,364 | 79.23% | Alaminos | 2004 | ap2005 |
| 57 | 442,033 | 492,754 | 89.71% | Daet | 2004 | ap2005 |
| 58 | 441,022 | 658,454 | 66.98% | Laoag | 2004 | ap2005 |
| 59 | 433,287 | 492,335 | 88.01% | Kalibo | 2004 | ap2005 |
| 60 | 414,608 | 529,666 | 78.28% | Surigao | 2004 | ap2005 |
| 61 | 398,810 | 594,704 | 67.06% | Baguio | 2004 | ap2005 |
| 62 | 398,552 | 427,053 | 93.33% | Borongan | 2004 | ap2005 |
| 63 | 397,078 | 539,342 | 73.62% | Ozamis (Archdiocese) | 2004 | ap2005 |
| 64 | 395,355 | 465,123 | 85.00% | Mati | 2004 | ap2005 |
| 65 | 394,410 | 480,865 | 82.02% | Tandag | 2004 | ap2005 |
| 66 | 392,989 | 598,768 | 65.63% | Ipil (Territorial Prelature) | 2004 | ap2005 |
| 67 | 387,966 | 445,938 | 87.00% | Infanta (Territorial Prelature) | 2004 | ap2005 |
| 68 | 387,108 | 423,485 | 91.41% | Libmanan (Territorial Prelature) | 2003 | ap2004 |
| 69 | 379,377 | 472,678 | 80.26% | Puerto Princesa (Vicariate Apostolic) | 2004 | ap2005 |
| 70 | 365,967 | 500,639 | 73.10% | Catarman | 2004 | ap2005 |
| 71 | 358,010 | 511,196 | 70.03% | San Jose de Antique | 2004 | ap2005 |
| 72 | 327,949 | 397,071 | 82.59% | San Jose in Mindoro (Vicariate Apostolic) | 2004 | ap2005 |
| 73 | 326,283 | 537,042 | 60.76% | Bayombong | 2004 | ap2005 |
| 74 | 300,421 | 315,846 | 95.12% | Naval | 2004 | ap2005 |
| 75 | 271,948 | 319,694 | 85.07% | Taytay (Vicariate Apostolic) | 2004 | ap2005 |
| 76 | 216,628 | 223,225 | 97.04% | Virac | 2004 | ap2005 |
| 77 | 202,754 | 307,348 | 65.97% | Bontoc-Lagawe (Vicariate Apostolic) | 2004 | ap2005 |
| 78 | 197,719 | 239,776 | 82.46% | Bangued | 2004 | ap2005 |
| 79 | 193,585 | 216,815 | 89.29% | Boac | 2003 | ap2004 |
| 80 | 192,128 | 264,351 | 72.68% | Romblon | 2004 | ap2005 |
| 81 | 181,374 | 271,152 | 66.89% | Tabuk (Vicariate Apostolic) | 2004 | ap2005 |
| 82 | 90,329 | 332,828 | 27.14% | Isabela (Territorial Prelature) | 2004 | ap2005 |
| 83 | 43,127 | 884,099 | 4.88% | Marawi (Territorial Prelature) | 2004 | ap2005 |
| 84 | 25,488 | 999,535 | 2.55% | Jolo (Vicariate Apostolic) | 2004 | ap2005 |
| 85 | 15,505 | 16,476 | 94.11% | Batanes (Territorial Prelature) | 2004 | ap2005 |
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