Illinois population between 2000 and 2023
Over the last 20 plus years, between 2000 and 2023, population of Illinois increased by 112,121. In this period, the peak population was 12.9 million in the year 2009. The numbers suggest that the population has already reached its peak and is showing a trend of decline.
| Year | Population | Year on Year Change | Change in Percent |
|---|---|---|---|
| 2000 | 12,437,568 | - | - |
| 2001 | 12,506,337 | 68,769 | 0.55% |
| 2002 | 12,557,394 | 51,057 | 0.41% |
| 2003 | 12,601,488 | 44,094 | 0.35% |
| 2004 | 12,646,958 | 45,470 | 0.36% |
| 2005 | 12,677,482 | 30,524 | 0.24% |
| 2006 | 12,719,564 | 42,082 | 0.33% |
| 2007 | 12,781,623 | 62,059 | 0.49% |
| 2008 | 12,840,720 | 59,097 | 0.46% |
| 2009 | 12,897,476 | 56,756 | 0.44% |
| 2010 | 12,840,545 | -56,931 | -0.44% |
| 2011 | 12,867,783 | 27,238 | 0.21% |
| 2012 | 12,883,029 | 15,246 | 0.12% |
| 2013 | 12,895,778 | 12,749 | 0.10% |
| 2014 | 12,885,092 | -10,686 | -0.08% |
| 2015 | 12,859,585 | -25,507 | -0.20% |
| 2016 | 12,821,709 | -37,876 | -0.29% |
| 2017 | 12,779,893 | -41,816 | -0.33% |
| 2018 | 12,724,685 | -55,208 | -0.43% |
| 2019 | 12,667,017 | -57,668 | -0.45% |
| 2020 | 12,790,357 | 123,340 | 0.97% |
| 2021 | 12,690,341 | -100,016 | -0.78% |
| 2022 | 12,582,515 | -107,826 | -0.85% |
| 2023 | 12,549,689 | -32,826 | -0.26% |
TABLE OF CONTENTS
Illinois population from 2000 to 2023
From 2000 to 2010, Illinois's population increased by 402,977 (3.24%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 9.63%.
From 2010 to 2020, Illinois's population decreased by 50,188 (0.39%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.18% .
After the COVID19 pandemic and, between the year 2020 and 2023, Illinois's population decreased by 240,668 (1.88%).For the same period, the rate of growth for the United States was 1.02%.
FIGURE 1
Illinois's population from 2000 to 2023.
The estimated population at the end of 2023 was 12.55 million.
Between the year 2000 and 2023, Illinois's population peaked in year 2009 at 12.9 million.
Between the year 2000 and 2023, Illinois's population was lowest in year 2000 at 12.44 million.
Illinois annual population growth rate
Between the years 2000 and 2023, i.e. 23 annual cycles, the population of Illinois grew year by year for 13 years and declined for 10 years.
From 2000 to 2023, Illinois had an average annual population growth rate of 0.04% per year. Overall the population grew 0.90% between 2000 and 2023.
FIGURE 2
Illinois annual population growth rate
The average annual growth rate from 2000 to 2023 was 0.04% per year.
From 2019 to 2020 Illinois population grew the most, with an increase of 123,340 people (a 0.97% year-on-year increase)..
From 2021 to 2022 Illinois population experienced the most significant decrease, with a decline of 107,826 people (a 0.85% year-on-year decline).
Things to know
Is Illinois population increasing or decreasing?
According to the latest data from U.S. Census Bureau's population estimates, Illinois's population decreased by 140,652 between 2021 and 2023. The decrease was 107,826 (decreased) between 2021 and 2022; and decrease of 32,826 (0.26%) between 2022 and 2023.
How has the population of Illinois changed in the last 10 years?
Between 2013 and 2023, population of Illinois decreased by 346,089 (2.68%). The population was highest at 12.89 million in the year 2014 and lowest at 12.55 million in the year 2023. Overall the average growth rate witnessed for the last 10 years was -0.27%.
References
- US Census Bureau Population Estimates Population Estimates Program (PEP)