Illinois’ population grew by 16,108 in 2025 thanks to an influx of people migrating from other countries. But Illinoisans moving away offset most of that gain.
Since 2020, 84% of Illinois communities have lost population. Small towns were hit hardest by population declines in 2024, while Chicago’s migrant crisis helped offset people choosing to leave.
More than half of Illinois voters said high taxes were the No. 1 concern for the state, according to an Illinois Policy Institute poll. Of those polled, nearly half said they would also move out of the state if given the chance.
The Chicago Teachers Union and its partners are pushing nine new or higher taxes that could end up costing Illinoisans $7.3 billion more starting July 1. Their scheme to fill a proposed state budget deficit is likely to backfire and shrink the tax base.
While Illinois’ total population grew slightly last year, many areas of the state experienced population decline. People moved out of state from half the counties.
Most neighboring states are gaining residents from people moving across state lines. Even of the states losing people, Illinois is losing at a significantly faster rate.