Bhairab Upazila is divided into Bhairab Municipality and seven union parishads: Aganagar, Gazaria, Kalika Prashad, Sadakpur, Shibpur, Shimulkandi, and Sreenagar.
Bhairab Upazila is comprised of Bhairab Municipality and seven rural councils: Aganagar, Gazaria, Kalika Prashad, Sadakpur, Shibpur, Shimulkandi, and Sreenagar.