Drumbeg is classified as a small village or hamlet by the NI Statistics and Research Agency (NISRA) (i.e. with population between 500 and 1,000). On Census day (29 April 2001) there were 727 people living in Drumbeg. Of these:
18.4% were aged under 16 years and 23.8% were aged 60 and over
45.3% of the population were male and 54.8% were female
12.7% were from a Catholic background and 83.2% were from a Protestant background