Various sources collect and disseminate migrant stock data at the national and international levels.
Stocks are defined as “the total number of international migrants present in a given country at a particular point in time” ( UN SD, 2017: 9).
See our thematic page on COVID-19 and migration data for more information.Īn international migrant is defined as “ any person who changes his or her country of usual residence” ( UN DESA, 1998). However, due to COVID-19, early estimates with an assumption of zero-growth between 1 March and 1 July 2020 suggest a decrease of nearly 2 million international migrants globally than initially expected between mid-2019 and mid-2020 ( UN DESA, 2020b). Despite the increase in absolute numbers, the share of international migrants in proportion to the world’s population has remained relatively stable between 19 at around 2.8 to 3.6 per cent. The growth rate increased to 2.5 per cent during the period 2015-2020 from 2.3 per cent between 20. In the past two decades, the international migrant stock grew annually by an average of 2.4 per cent. This figure is up from 248 million in 2015, 220 million in 2010, 191 million in 2005 and 173 million in 2000. According to the UN, the estimated number of international migrants worldwide increased in the twenty years between 20, reaching 281 million in 2020.
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