(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 168,000 | 187,000 | 89.84% | Kaišiadorys | 2004 | ap2005 |
| 2 | 503,000 | 618,000 | 81.39% | Kaunas (Archdiocese) | 2004 | ap2005 |
| 3 | Lithuania, Military (Military Ordinariate) | 2004 | ap2005 | |||
| 4 | 333,300 | 405,500 | 82.19% | Panevezys | 2004 | ap2005 |
| 5 | 269,861 | 338,680 | 79.68% | Šiauliai | 2004 | ap2005 |
| 6 | 541,765 | 696,806 | 77.75% | Telšiai (-Klaipeda) | 2004 | ap2005 |
| 7 | 382,400 | 403,000 | 94.89% | Vilkaviškis | 2004 | ap2005 |
| 8 | 570,000 | 810,000 | 70.37% | Vilnius (Archdiocese) | 2004 | ap2005 |
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