St. Clair County, IL population between 2000 and 2023
Over the last 20 plus years, between 2000 and 2023, population of St. Clair County decreased by 5,280. In this period, the peak population was 270,368 in the year 2010. 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 | 256,298 | - | - |
| 2001 | 255,657 | -641 | -0.25% |
| 2002 | 256,332 | 675 | 0.26% |
| 2003 | 256,068 | -264 | -0.10% |
| 2004 | 257,049 | 981 | 0.38% |
| 2005 | 257,315 | 266 | 0.10% |
| 2006 | 258,662 | 1,347 | 0.52% |
| 2007 | 259,257 | 595 | 0.23% |
| 2008 | 260,139 | 882 | 0.34% |
| 2009 | 261,202 | 1,063 | 0.41% |
| 2010 | 270,368 | 9,166 | 3.51% |
| 2011 | 270,097 | -271 | -0.10% |
| 2012 | 268,748 | -1,349 | -0.50% |
| 2013 | 266,934 | -1,814 | -0.67% |
| 2014 | 266,061 | -873 | -0.33% |
| 2015 | 265,008 | -1,053 | -0.40% |
| 2016 | 263,482 | -1,526 | -0.58% |
| 2017 | 262,881 | -601 | -0.23% |
| 2018 | 261,631 | -1,250 | -0.48% |
| 2019 | 259,889 | -1,742 | -0.67% |
| 2020 | 256,844 | -3,045 | -1.17% |
| 2021 | 254,958 | -1,886 | -0.73% |
| 2022 | 252,265 | -2,693 | -1.06% |
| 2023 | 251,018 | -1,247 | -0.49% |
TABLE OF CONTENTS
St. Clair County, IL population from 2000 to 2023
From 2000 to 2010, St. Clair County's population increased by 14,070 (5.49%), 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, St. Clair County's population decreased by 13,524 (5%), 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, St. Clair County's population decreased by 5,826 (2.27%).For the same period, the rate of growth for the United States was 1.02%.
FIGURE 1
St. Clair County's population from 2000 to 2023.
The estimated population at the end of 2023 was 251,018.
Between the year 2000 and 2023, St. Clair County's population peaked in year 2010 at 270,368.
Between the year 2000 and 2023, St. Clair County's population was lowest in year 2023 at 251,018.
St. Clair County, IL annual population growth rate
Between the years 2000 and 2023, i.e. 23 annual cycles, the population of St. Clair County grew year by year for 8 years and declined for 15 years.
From 2000 to 2023, St. Clair County had an average annual population growth rate of 0.09% per year. Overall the population shrank 2.06% between 2000 and 2023.
FIGURE 2
St. Clair County annual population growth rate
The average annual growth rate from 2000 to 2023 was 0.09% per year.
From 2009 to 2010 St. Clair County population grew the most, with an increase of 9,166 people (a 3.51% year-on-year increase)..
From 2019 to 2020 St. Clair County population experienced the most significant decrease, with a decline of 3,045 people (a 1.17% year-on-year decline).
Things to know
Is St. Clair County, IL population increasing or decreasing?
According to the latest data from U.S. Census Bureau's population estimates, St. Clair County's population decreased by 3,940 between 2021 and 2023. The decrease was 2,693 (decreased) between 2021 and 2022; and decrease of 1,247 (0.49%) between 2022 and 2023.
How has the population of St. Clair County, IL changed in the last 10 years?
Between 2013 and 2023, population of St. Clair County decreased by 15,916 (5.96%). The population was highest at 266,061 in the year 2014 and lowest at 251,018 in the year 2023. Overall the average growth rate witnessed for the last 10 years was -0.61%.
References
- US Census Bureau Population Estimates Population Estimates Program (PEP)