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| # | Catholics | Population | Percent Catholic | Province | Dioceses | Suffragans | Diocesan Priests | Religious Priests | Total Priests | Permanent Deacons | Male Religious | Female Religious | Parishes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 697,000 | 17,685,000 | 3.94% | Bucarest {Bucuresti} | 5 | Iasi, Oradea Mare {Gran Varadino, Nagyvárad}, Satu Mare {Szatmár}, Timisoara | 539 | 122 | 661 | 351 | 934 | 383 | |
| 2 | 744,000 | - | Fagaras e Alba Iulia (Romanian) | 5 | Cluj-Gherla (Romanian), Lugoj (Romanian), Maramures (Romanian), Oradea Mare {Gran Varadino} (Romanian) | 720 | 40 | 760 | 4 | 53 | 291 | 761 |
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