In the 1994 national census Selamago had a population of 13,608, of whom 6,675 were men and 6,933 women; 397 or 2.92% of its population were urban dwellers. The five largest ethnic groups reported in this woreda were the Dime (39.23%), the Bodi otherwise known as the Me'en (33.07%), the Mursi (22.94%), the Amhara (2.2%), and the Basketo (1.26%); all other ethnic groups made up 1.3% of the population. Dime was spoken as a first language by 40.39% of the inhabitants, 33.07% spoke Me'en, and 22.94% spoke Mursi; the remaining 3.6% spoke all other primary languages reported. A 1996 UNDP report states that the "Bodi" and "Dimi" peoples were not counted in the 1984 census. One group who were missed were the Kwegu, whose villages can be found along the Omo River; they may have been counted as belonging to the Mursi.