According to the
2022 Bangladeshi census, Bhairab Upazila had 79,871 households and a population of 362,681. 11.75% of the population were under 5 years of age. Bhairab had a literacy rate (age 7 and over) of 71.82%: 71.71% for males and 71.93% for females, and a sex ratio of 93.76 males for every 100 females. 215,608 (59.45%) lived in urban areas. According to the
2011 Census of Bangladesh, Bhairab Upazila had 58,940 households and a population of 298,309. 86,278 (28.92%) were under 10 years of age. Bhairab had a literacy rate (age 7 and over) of 42.71%, compared to the national average of 51.8%, and a sex ratio of 1030 females per 1000 males. 118,992 (39.89%) lived in urban areas. According to the
1991 Bangladesh census, Bhairab had a population of 192448. Males constitute 49.25% of the population, and females 50.74%. This Upazila's eighteen up population is 95,910. Bhairab has an average literacy rate of 36.23% (7+ years) where the national average is 32.4%. ==Administration==