Federal Republic of Nigeria, Jamhuriyar Tarayyar Nijeriya
50% (2010 UNESCO)
American Sign Language, Bagirmi, Klao, Mbay, Mpade, Ngambay, Pana
Bendor-Samuel and Hartell 1989; Bendor-Samuel, Hansford and Standford 1976; Blench 1992, 2003, 2011; Connell 1994; Crozier and Blench 1992; Dimmendaal and Voeltz 2007
The number of individual languages listed for Nigeria is 527. Of these, 520 are living and 7 are extinct. Of the living languages, 20 are institutional, 77 are developing, 353 are vigorous, 27 are in trouble, and 43 are dying.