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Resident Population in Illinois (ILPOP)

2025: 12,719.141
Updated: Mar 3, 2026 5:41 PM CST
2025:  12,719.141  
2024:  12,703.033  
2023:  12,633.389  
2022:  12,609.577  
2021:  12,703.354  

Units:

Thousands of Persons,
Not Seasonally Adjusted

Frequency:

Annual

Fullscreen

Notes

Title Release Dates

2004-12-22 2026-01-27
 
Source    

2004-12-22 2026-01-27
 
Release    

2004-12-22 2026-01-27
 
Units    

2004-12-22 2026-01-27
 
Frequency    

2004-12-22 2026-01-27
 
Seasonal Adjustment    

2004-12-22 2026-01-27
 
Notes    

2004-12-22 2026-01-27

Release Tables

Annual Estimates of the Population for the U.S. and States, and for Puerto Rico