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 Illinois suffered its 8th 
consecutive year of population decline, a record-setting year that can be 
squarely blamed on people moving out of the state, according to estimates 
released Dec. 21 by the U.S. Census Bureau. 2021 saw the largest number of 
Illinoisans leaving on net in recorded history. 
Illinois’ population declined by 113,776 from July 1, 2020, through July 1, 
2021. No other Midwestern or neighbor state saw a population decline of more 
than 17,000. 
 
Not only was Illinois’ experience with overall population decline much more 
severe than peer states, the sole driver of Illinois’ population decline also 
stood out. There were 122,460 Illinoisans on net fleeing to other states in 
2021, over 9 times the number of residents who left Minnesota, the next closest 
state in terms of domestic outmigration. 
People leaving for other states also hurt population totals in Ohio, Nebraska, 
Kansas, North Dakota and Michigan. 
 
International migration was a boon to state populations during 2021, several 
states saw population growth strained by deaths outpacing births during the 
year. Ohio, Michigan, Kentucky, Missouri and Wisconsin all experienced “natural 
decreases” in their state population. 
  
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			While Illinois has been 
			fortunate to continue to experience “natural increases” in 
			population as births continue to outpace deaths, the gap between the 
			two has been narrowing historically and international migration 
			rates into the state have varied widely. Domestic migration will be 
			vitally important to reversing Illinois’ population decline. 
			
			  
			Traditionally, the 
			major reasons Illinoisans are choosing to leave the state are for 
			better housing and employment opportunities, both of which have been 
			made worse by poor public policy in Illinois. Nearly half of 
			Illinoisans have thought about moving away, and they said taxes were 
			their No. 1 reason. Population decline also contributes to the lower 
			economic prospects of the state. 
			 
			It remains unclear to what extent these factors contributed to 
			Illinoisans moving out of state from 2020-2021. Other factors such 
			as pandemic-related job losses, school closures and government 
			mandates could also be to blame. 
			 
			Census data does confirm Illinois’ outmigration-driven population 
			decline has reached record levels and is more of a problem now than 
			ever. Regardless of the cause, the desire to leave Illinois needs to 
			go away for the state population to one day grow again.  |