2.41% of the population. Oromiffa was spoken as a first language by 65.38%, and 33.79% spoke Amharic; the remaining 0.83% spoke all other primary languages reported. The majority of the inhabitants were Muslim, with 59.71% of the population having reported they practiced that belief, while 39.91% of the population said they professed Ethiopian Orthodox Christianity. Notes Districts of Oromia Region