IOM Bangladesh Needs and Population Monitoring (NPM) regularly and systematically captures and disseminates information regarding the movements and evolving needs of populations on the move, whether on site or en route. NPM’s site assessment rounds capture the numbers, locations and key sectoral needs of Rohingya refugees in the areas affected by the influx since 25 August 2017. Data are collected through key informant interviews and direct observation. The unit of data collection depends on the context. In collective sites, the unit is a ‘block,’ defined as an area of responsibility of one majhee, a community leader. In dispersed sites, the geographical unit of reference is the village. These units are collectively referred to as ‘locations’ in this Site Profile. The data are aggregated and reported at the camp level in collective sites.