Bangladesh Displacement - [IDPs] - Estimate of Internally Displaced Persons [IOM DTM]

Bangladesh is highly vulnerable to recurrent natural hazards including cyclones, floods, tidal surges, landslides, and riverbank erosion which continue to trigger widespread internal displacement. Despite the persistent nature of these hazards, the country has historically lacked a comprehensive, nationwide estimate of the total number of IDPs affected by disasters. Existing data has largely been fragmented, event-specific, or geographically limited, making it difficult for policymakers to understand the scale and patterns of displacement or plan nation-wide responses. Recognizing this long-standing data gap, the International Organization for Migration (IOM) undertook Bangladesh’s first systematic national IDP estimation exercise using the Displacement Tracking Matrix (DTM) methodology. This assessment applied a structured approach to identify displacement across all 5,388 administrative units of Bangladesh. This nationwide assessment builds upon and supports the Government of Bangladesh’s National Strategy on Internal Displacement Management by operationalizing ‘Activity 2.1.1’, which mandates systematic and periodic collection of field-level displacement data under the guidance of the Ministry of Disaster Management and Relief (MoDMR) and local institutional structures. The initiative was supported through multiple IOM projects funded by the European Union (EU), the IOM Development Fund (IDF), and the Norwegian Agency for Development Cooperation (NORAD) via the Platform on Disaster Displacement (PDD), reflecting strong international collaboration in strengthening Bangladesh’s displacement data ecosystem. By providing a clear and verified national estimate, this assessment will help the government and partners make better decisions on disaster preparedness, social protection, relocation planning, and long-term development. Files (slice {"file": url}): - Bangladesh - DPs Estimate - Round 1 - October 2025 (excel): https://data.humdata.org/dataset/f563ae50-58c0-4a67-b2a6-8df0679bad8d/resource/41f4c6ed-a4cc-447a-b16c-0411c907e9a5/download/bangladesh_idps_estimate_round_1_october_2025_hdx.xlsx

Cite as: International Organization for Migration (IOM). Bangladesh Displacement - [IDPs] - Estimate of Internally Displaced Persons [IOM DTM]. https://data.humdata.org/dataset/bangladesh-displacement-idps-estimate-of-internally-displaced-persons-iom-dtm