The majority of the inhabitants practiced Ethiopian Orthodox Christianity, with 86.58% reporting that as their religion, while 13.32% of the population said they were Muslim. The 1994 national census reported a total population for this woreda of 139,151 in 34,716 households, of whom 69,975 were men and 69,176 were women; none of its population were reported to be urban dwellers. The largest ethnic group reported in Guba Lafto was the Amhara (99.92%). Amharic was spoken as a first language by 99.94%. The majority of the population was reported to practice Ethiopian Orthodox Christianity with 57% professing that belief, while 43% of the population said they were Muslim.