St. Clair County Demographics
Population Trend
Population Change by Decade
| Period | Population | Change | % Change |
|---|---|---|---|
| 1820 | 4,166 | — | — |
| 1830 | 5,975 | +1,809 | +43.4% |
| 1840 | 5,638 | -337 | -5.6% |
| 1850 | 6,829 | +1,191 | +21.1% |
| 1860 | 11,013 | +4,184 | +61.3% |
| 1870 | 9,360 | -1,653 | -15.0% |
| 1880 | 14,462 | +5,102 | +54.5% |
| 1890 | 17,353 | +2,891 | +20.0% |
| 1900 | 19,425 | +2,072 | +11.9% |
| 1910 | 20,715 | +1,290 | +6.6% |
| 1920 | 23,383 | +2,668 | +12.9% |
| 1930 | 24,510 | +1,127 | +4.8% |
| 1940 | 27,336 | +2,826 | +11.5% |
| 1950 | 26,687 | -649 | -2.4% |
| 1960 | 25,388 | -1,299 | -4.9% |
| 1970 | 27,956 | +2,568 | +10.1% |
| 1980 | 41,205 | +13,249 | +47.4% |
| 1990 | 50,009 | +8,804 | +21.4% |
| 2000 | 64,742 | +14,733 | +29.5% |
| 2010 | 83,593 | +18,851 | +29.1% |
| 2020 | 91,103 | +7,510 | +9.0% |
| 2024 | 96,927 | +5,824 | +6.4% |
Cities & CDPs in St. Clair County
Complete Population Data
| Year | Population | Source |
|---|---|---|
| 1820 | 4,166 | Decennial Census |
| 1830 | 5,975 | Decennial Census |
| 1840 | 5,638 | Decennial Census |
| 1850 | 6,829 | Decennial Census |
| 1860 | 11,013 | Decennial Census |
| 1870 | 9,360 | Decennial Census |
| 1880 | 14,462 | Decennial Census |
| 1890 | 17,353 | Decennial Census |
| 1900 | 19,425 | Decennial Census |
| 1910 | 20,715 | Decennial Census |
| 1920 | 23,383 | Decennial Census |
| 1930 | 24,510 | Decennial Census |
| 1940 | 27,336 | Decennial Census |
| 1950 | 26,687 | Decennial Census |
| 1960 | 25,388 | Decennial Census |
| 1970 | 27,956 | Decennial Census |
| 1980 | 41,205 | Decennial Census |
| 1990 | 50,009 | Decennial Census |
| 2000 | 64,742 | Decennial Census |
| 2001 | 67,274 | Population Estimates Program |
| 2002 | 68,629 | Population Estimates Program |
| 2003 | 70,416 | Population Estimates Program |
| 2004 | 72,596 | Population Estimates Program |
| 2005 | 75,948 | Population Estimates Program |
| 2006 | 79,348 | Population Estimates Program |
| 2007 | 81,223 | Population Estimates Program |
| 2008 | 83,009 | Population Estimates Program |
| 2009 | 83,593 | Population Estimates Program |
| 2010 | 83,593 | Decennial Census |
| 2011 | 83,992 | Population Estimates Program |
| 2012 | 84,779 | Population Estimates Program |
| 2013 | 85,831 | Population Estimates Program |
| 2014 | 86,014 | Population Estimates Program |
| 2015 | 86,569 | Population Estimates Program |
| 2016 | 87,342 | Population Estimates Program |
| 2017 | 87,985 | Population Estimates Program |
| 2018 | 88,842 | Population Estimates Program |
| 2019 | 89,735 | Population Estimates Program |
| 2020 | 91,103 | Decennial Census |
| 2021 | 92,850 | Population Estimates Program |
| 2022 | 93,879 | Population Estimates Program |
| 2023 | 95,487 | Population Estimates Program |
| 2024 | 96,927 | Population Estimates Program |
Data Sources
- Population Estimates Program US Census Bureau Population Estimates Program (annual estimates)
- Decennial Census US Census Bureau Decennial Census (actual count every 10 years)