In 2025, the official capacity of Kos CCAC was 3,455. The population at the end of 2025 was 1,363, with the centre continuing to hold unaccompanied children. In June 2025, the population (adult and minor) was 62% male and 38% female, while 43% were minors. The population includes Egyptian nationals.

At the end of 2023, persons with special needs and vulnerabilities were being held in both the Kos CCAC without being identified and allocated to appropriate accommodation areas. Young women or families and single mothers with small children were being accommodated with unrelated adult men and were being exposed to potentially serious harm.

Unaccompanied children were held in an ad-hoc section surrounded by high mesh fences topped with rolls of barbed wire. The centre reports a widespread lack of activities, absence of adequate clothing and food, as well as insufficient psycho-social support and legal advice. The girls reported that they felt unsafe.