(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 56,327 | 595,111 | 9.46% | Hwalien | 2004 | ap2005 |
| 2 | 52,090 | 3,225,165 | 1.62% | Hsinchu | 2004 | ap2005 |
| 3 | 47,221 | 3,650,591 | 1.29% | Kaohsiung | 2004 | ap2005 |
| 4 | 83,893 | 7,159,198 | 1.17% | Taipei (Archdiocese) | 2004 | ap2005 |
| 5 | 16,888 | 1,573,098 | 1.07% | Kiayi | 2004 | ap2005 |
| 6 | 35,580 | 4,100,000 | .87% | Taichung | 2004 | ap2005 |
| 7 | 14,448 | 1,856,334 | .78% | Tainan | 2004 | ap2005 |
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