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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 | 2,754,000 | 28,919,000 | 9.52% | Seoul | 9 | Ch'unch'on, Daejeon {Taejon}, Hamhung, Incheon {Inch'on}, P'yong-yang, Suwon, Uijongbu, Wonju | 1,424 | 417 | 1,841 | 1,035 | 4,861 | 693 | |
| 2 | 1,090,000 | 14,554,000 | 7.49% | Daegu {Taegu} | 5 | Andong, Cheongju {Ch'ongju}, Masan, Pusan | 759 | 90 | 849 | 310 | 2,512 | 380 | |
| 3 | 515,000 | 5,976,000 | 8.62% | Kwangju | 3 | Cheju, Jeonju {Chonju, Jeon Ju} | 403 | 29 | 432 | 110 | 1,067 | 204 |
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