 With an estimated area of 686.57 square kilometers, Mesela has an estimated population density of 225 people per square kilometer, which is greater than the Zone average of 101.8.The 1994 national census reported a total population for this woreda of 111,478, of whom 57,012 were men and 54,466 women; 3,262 or 2.93% of its population were urban dwellers at the time.The two largest ethnic groups reported in Mesela were the Oromo (91.04%), and the Amhara (8.72%); all other ethnic groups made up 0.24% of the population.