BLS data show that Illinois had a net loss of 354,000 adults over the last decade from its prime working-age adult population (ages 25 to 54), with 290,000 of that loss attributable to migration rather than mortality. This is a troubling sign that indicates a weak economy – and the loss of adult taxpayers and their children.
In the majority of Illinois’ large cities, the number of people moving to another part of the country is greater than the combined gains from more births than deaths and international immigration.