(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Province | Dioceses | Suffragans | Diocesan Priests | Religious Priests | Total Priests | Permanent Deacons | Male Religious | Female Religious | Parishes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2,691,000 | 10,202,000 | 26.38% | Mwanza | 6 | Bukoba, Geita, Musoma, Rulenge, Shinyanga | 302 | 79 | 381 | 123 | 1,051 | 149 | |
| 2 | 2,514,000 | 10,782,000 | 23.32% | Dar-es-Salaam | 6 | Dodoma, Mahenge, Morogoro, Tanga, Zanzibar | 293 | 237 | 530 | 473 | 1,992 | 215 | |
| 3 | 1,929,000 | 7,909,000 | 24.39% | Songea | 8 | Iringa, Lindi, Mbeya, Mbinga, Mtwara, Njombe, Tunduru-Masasi | 387 | 166 | 553 | 1 | 509 | 2,147 | 201 |
| 4 | 1,793,000 | 6,801,000 | 26.36% | Tabora | 6 | Kahama, Kigoma, Mpanda, Singida, Sumbawanga | 206 | 80 | 286 | 188 | 897 | 98 | |
| 5 | 1,045,000 | 3,775,000 | 27.68% | Arusha | 4 | Mbulu, Moshi, Same | 254 | 153 | 407 | 482 | 1,474 | 178 |
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