Based on the 2007 national census conducted by the Central Statistical Agency of Ethiopia (CSA), this woreda has a total population of 139,825, an increase of 0.48% over the 1994 census, of whom 70,750 are men and 69,075 women; 4,886 or 3.49% are urban inhabitants. With an area of 900.49 square kilometers, Guba Lafto has a population density of 155.28, which is greater than the Zone average of 123.25 persons per square kilometer.
According to the 2007 census conducted by Ethiopia's Central Statistical Agency (CSA), this woreda had a total population of 139,825, an increase of 0.48% from the 1994 census.  The population breakdown is 70,750 men and 69,075 women, with 4,886 individuals residing in urban areas. The woreda covers 900.49 square kilometers and has a population density of 155.28 people per square kilometer, exceeding the Zone average of 123.25 persons per square kilometer.