One possible policy option for countries concernedabout declining or aging populations is replacementmigration – allowing or even encouraginginternational migration in order to counteract declineand aging of native populations. In the pasttwo decades, net international migration into theNordic region has been a much larger contributorto population growth than natural increase. Thispolicy brief explores the likely demographic contributionof migration to population growth in theNordic countries in the future and the extent that itcould compensate for population decline or aging.