Drivers Population growth and migration

Total international migrant stock


International migrant stock is the number of people born in a country other than that in which they live. It also includes refugees. The data used to estimate the international migrant stock at a particular time are obtained mainly from population censuses. The estimates are derived from the data on the foreign-born population (people who have residence in one country but were born in another country). When data on the foreign-born population are not available, data on foreign population (people who are citizens of a country other than the country in which they reside) are used as estimates. After the breakup of the Soviet Union in 1991, people living in one of the newly independent countries who were born in another were classified as international migrants. Estimates of migrant stock in the newly independent states from 1990 on are based on the 1989 census of the Soviet Union.


Migration can be related to the available workforce for food supply chains. It can also be particularly relevant for the working age population involved in agricultural production, such as seasonal farmworkers.