The 1994 national census reported a total population for this woreda 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. Oromiffa was spoken as a first language by 76.05%, 16.09% spoke Amharic, and 2.2% spoke Silt'e; the remaining 5.66% spoke all other primary languages reported. The majority of the inhabitants were Moslem, with 72.37% of the population reporting they practiced that belief, while 23.43% of the population said they were Ethiopian Orthodox Christianity, and 3.79% were Protestant.