Biometric Registration by IOM Nigeria's DTM Unit in Damboa County captured 19,437 displaced households, covering a total of 66,810 displaced persons. 83% of IDPs were women and children, and 22% were under 5 years old, while 6% were 60+ years old. 57% of IDPs were female, and 43% were male. The overall average family size is 3.4, with 35 per cent of the families comprising of 1–2 members, 43 per cent of the families comprising of 3–4 members, and 14per cent of the families comprising of 5–6 members, 5% comprising 7-8 members and 2% having 9-10 members. During the registration exercise, the enumerators collected vulnerability data to identify individuals that may require additional assistance. Out of the total population registered, about 16 per cent are people having at least one vulnerability.