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On 24 February 2022, the Russian Federation initiated a large-scale invasion of Ukraine, leading to an unprecedented humanitarian crisis. In response, starting on 9 March 2022, the International Organization for Migration (IOM)'s Data and Analytics Unit began conducting systematic assessments of the Ukrainian population. These assessments are designed to gather critical information on displacement, mobility flows, intentions, and living conditions to inform targeted assistance. Initially conducted every two months, the survey frequency shifted to quarterly from Round 13 onwards. In June 2024, the methodology was further refined to produce quarterly, representative data at the oblast level, enabling more localized analysis.
This methodological note outlines the assessment methodology and sampling design for Round 20 of the General Population Survey (GPS).