Population:
50,481,305 (January 2000 est.) 
Ethnic groups:
Over 200 African ethnic groups of which the majority are Bantu; the four largest tribes-Mongo, Luba, Kongo (all Bantu), and the Mangbetu-Azande (Hamitic) make up about 45% of the population 
Religions:
Roman Catholic 50%, Protestant 20%, Kimbanguist 10%, Muslim 10%, other syncretic sects and traditional beliefs 10% 
Languages:
French (official), Lingala (a lingua franca trade language), Kingwana (a dialect of Kiswahili or Swahili), Kikongo, Tshiluba 

Bishops: 60
Diocesan Priests: 2,347
Religious Priests: 1,365
Professed Religious men (not Priests): 1,469
Professed Religious women: 6,425
Members of Secular Institute (Men): 10
Members of Secular Institute (Women): 22
Lay Missionaries: 91
Catechists: 63,839