The 1994 national census reported a total population for this district of 111,926, of whom 55,969 were men and 55,957 women; 31,869 or 28.47% of its population were urban dwellers at the time. The five largest ethnic groups reported in Adama were the Oromo (78.69%), the Amhara (8.53%), the Soddo Gurage (2.87%), the Silt'e (2.81%), and the Sebat Bet Gurage (1.19%); all other ethnic groups made up 5.81% of the population.
The 1994 national census revealed a total population of 111,926 residents in this district, comprising 55,969 males and 55,957 females; 31,869 or 28.47% of its inhabitants were urban dwellers at the time. The five largest ethnic groups present in Adama were the Oromo (78.69%), the Amhara (8.53%), the Soddo Gurage (2.87%), the Silt'e (2.81%), and the Sebat Bet Gurage (1.19%); all other ethnic groups accounted for 5.81% of the population.