 Based on the 2007 census conducted by the Central Statistical Agency of Ethiopia (CSA), this woreda has a total population of 138,926, an increase of 90,186 over the 1994 national census, of whom 70,504 are men and 68,422 women; 10,758 or 7.74% are urban inhabitants.With an area of 3,374.52 km2, Welkait has a population density of 41.17 people/km2, which is greater than the Zone average of 28.94 people/km2.A total of 30,375 households were counted in this woreda, resulting in an average of 4.57 persons in a household, and 29,336 housing units.