 With an estimated area of 2,382.82 square kilometers, Limmu has an estimated population density of 52.7 people per square kilometer, which is less than the Zone average of 81.4.The 1994 national census reported a total population for this woreda of 90,544, of whom 45,067 were men and 45,477 women; 2,741 or 3.03% of its population were urban dwellers at the time.The two largest ethnic groups reported in Limmu were the Oromo (85.84%), and the Amhara (13.39%); all other ethnic groups made up 0.71% of the population.