In the previous census, conducted in 1994, the region's population was reported to be 5,439,860, of which 2,875,996 were males and 2,563,864 were females. The urban residents of the Somali Region numbered 492,710 households, with an average of 6.6 persons per household; a high sex ratio of 120 males to 100 females was reported. The ethnic groups included Somalis (96.23%), Oromo (2.25%), Amhara (0.69%), and Gurages (0.14%). Somali was the working language and is predominantly spoken within the Region, spoken by 95.9% of the inhabitants. Other major languages included Oromo (2.24%), Amharic (0.92%), and Gurage (0.033%). 98.7% of the population were Muslim, 0.9% Orthodox Christian, and 0.3% are followers of other religions.