Lumbo is a barangay in the municipality of Alubijid, in the province of Misamis Oriental. Its population as determined by the 2015 Census was 1,879. This represented 6.32% of the total population of Alubijid.
According to the 2015 Census, the age group with the highest population in Lumbo is 5 to 9, with 198 individuals. Conversely, the age group with the lowest population is 75 to 79, with 13 individuals.
The population of Lumbo grew from 1,086 in 1990 to 1,879 in 2015, an increase of 793 people. The latest census figures in 2015 denote a positive growth rate of 2.05%, or an increase of 190 people, from the previous population of 1,689 in 2010.