OHDIR Foundation has recently achieved a cohort data of 30000 families through a thorough mapping & listing activity. A total team of 24 data collectors performed the activity within a duration of three months’ time. Now we have basic information of 30,000 families including their social status. This cohort consists of the information of every household of Taljanga, Rauti and Tarail Sachail Union of Tarail Upazila (Sub-District) of Kishoreganj District Bangladesh.