 The two largest ethnic groups reported in Jeldu were the Oromo (96.51%), and the Amhara (3.3%); all other ethnic groups made up 0.19% of the population.Oromiffa was spoken as a first language by 98.63%, and 1.32% spoke Amharic; the remaining 0.05% spoke all other primary languages reported.The majority of the inhabitants professed Ethiopian Orthodox Christianity, with 76.17% of the population reporting they practiced that belief, while 14.01% of the population said they practiced traditional beliefs, and 9.51% were Protestant.