According to the
2022 Bangladeshi census, Kazipur Upazila had 74,843 households and a population of 281,442. 9.64% of the population were under 5 years of age. Kazipur had a literacy rate (age 7 and over) of 63.95%: 67.20% for males and 60.93% for females, and a sex ratio of 94.40 males for every 100 females. 62,555 (22.23%) lived in urban areas. According to the
2011 Census of Bangladesh, Kazipur Upazila had 69,664 households and a population of 274,679. 67,663 (24.63%) were under 10 years of age. Kazipur had a literacy rate (age 7 and over) of 37.50%, compared to the national average of 51.8%, and a sex ratio of 1035 females per 1000 males. 16,540 (6.02%) lived in urban areas. Par the
2001 Bangladesh census, Kazipur has a population of 2,66,950; male constituted 136056 of the population, female 130894. ==Administration==