Based on figures published by the Central Statistical Agency in 2005, this woreda has an estimated total population of 131,553, of whom 67,555 were men and 63,998 were women; 4,556 or 3.46% of its population are urban dwellers, which is less than the Zone average of 8.5%. With an estimated area of 1,838.60 square kilometers, Isara Tocha has an estimated population density of 71.6 people per square kilometer, which is less than the Zone average of 156.5.[4]
The 1994 national census reported a total population for this woreda of 92,667 of whom 45,109 were males and 47,558 were females; 2,514 or 2.71% of its population were urban dwellers. The four largest ethnic groups reported in Isara Tocha were the Kullo (93.36%), the Konta (3.33%), the Kaffa (1.53%), and the Amhara (1.19%); all other ethnic groups made up 0.59% of the population. Kullo is spoken as a first language by 94.38%, 3.15% Konta, and 1.82% speak Kafa; the remaining 0.65% spoke all other primary languages reported.[5]
Concerning religious beliefs, the 1994 census reported that 60.68% of the population said they observed traditional religions, 34.33% practiced Ethiopian Orthodox Christianity, and 4.55% were Protestants.[5]