Decatur Demographics
Population Trend
Population Change by Decade
| Period | Population | Change | % Change |
|---|---|---|---|
| 1790 | 0 | — | — |
| 1800 | 0 | — | — |
| 1810 | 0 | — | — |
| 1820 | 0 | — | — |
| 1830 | 0 | — | — |
| 1840 | 0 | — | — |
| 1850 | 0 | — | — |
| 1860 | 0 | — | — |
| 1870 | 0 | — | — |
| 1880 | 0 | — | — |
| 1890 | 2,765 | — | — |
| 1900 | 3,114 | +349 | +12.6% |
| 1910 | 4,228 | +1,114 | +35.8% |
| 1920 | 4,752 | +524 | +12.4% |
| 1930 | 15,593 | +10,841 | +228.1% |
| 1940 | 16,604 | +1,011 | +6.5% |
| 1950 | 19,974 | +3,370 | +20.3% |
| 1960 | 29,217 | +9,243 | +46.3% |
| 1970 | 38,044 | +8,827 | +30.2% |
| 1980 | 42,002 | +3,958 | +10.4% |
| 1990 | 48,761 | +6,759 | +16.1% |
| 2000 | 53,929 | +5,168 | +10.6% |
| 2010 | 55,683 | +1,754 | +3.3% |
| 2020 | 57,938 | +2,255 | +4.0% |
| 2024 | 57,974 | +36 | +0.1% |
Decatur vs. Morgan County
| Year | Decatur | Morgan County | Share |
|---|---|---|---|
| 1970 | 38,044 | 77,306 | 49.2% |
| 1980 | 42,002 | 90,231 | 46.5% |
| 1990 | 48,761 | 100,043 | 48.7% |
| 2000 | 53,929 | 111,064 | 48.6% |
| 2010 | 55,683 | 119,490 | 46.6% |
| 2020 | 57,938 | 123,421 | 46.9% |
| 2024 | 57,974 | 126,084 | 46.0% |
Complete Population Data
| Year | Population | Source |
|---|---|---|
| 1790 | 0 | Historical (Pre-2000) |
| 1800 | 0 | Historical (Pre-2000) |
| 1810 | 0 | Historical (Pre-2000) |
| 1820 | 0 | Historical (Pre-2000) |
| 1830 | 0 | Historical (Pre-2000) |
| 1840 | 0 | Historical (Pre-2000) |
| 1850 | 0 | Historical (Pre-2000) |
| 1860 | 0 | Historical (Pre-2000) |
| 1870 | 0 | Historical (Pre-2000) |
| 1880 | 0 | Historical (Pre-2000) |
| 1890 | 2,765 | Historical (Pre-2000) |
| 1900 | 3,114 | Historical (Pre-2000) |
| 1910 | 4,228 | Historical (Pre-2000) |
| 1920 | 4,752 | Historical (Pre-2000) |
| 1930 | 15,593 | Historical (Pre-2000) |
| 1940 | 16,604 | Historical (Pre-2000) |
| 1950 | 19,974 | Historical (Pre-2000) |
| 1960 | 29,217 | Historical (Pre-2000) |
| 1970 | 38,044 | Decennial Census |
| 1980 | 42,002 | Decennial Census |
| 1990 | 48,761 | Decennial Census |
| 2000 | 53,929 | Decennial Census |
| 2001 | 54,062 | Population Estimates Program |
| 2002 | 53,857 | Population Estimates Program |
| 2003 | 54,159 | Population Estimates Program |
| 2004 | 53,966 | Population Estimates Program |
| 2005 | 54,189 | Population Estimates Program |
| 2006 | 54,679 | Population Estimates Program |
| 2007 | 54,873 | Population Estimates Program |
| 2008 | 55,249 | Population Estimates Program |
| 2009 | 55,607 | Population Estimates Program |
| 2010 | 55,683 | Decennial Census |
| 2011 | 55,912 | Population Estimates Program |
| 2012 | 55,838 | Population Estimates Program |
| 2013 | 55,472 | Population Estimates Program |
| 2014 | 55,273 | Population Estimates Program |
| 2015 | 55,037 | Population Estimates Program |
| 2016 | 54,749 | Population Estimates Program |
| 2017 | 54,427 | Population Estimates Program |
| 2018 | 54,353 | Population Estimates Program |
| 2019 | 54,403 | Population Estimates Program |
| 2020 | 57,938 | Decennial Census |
| 2021 | 56,862 | Population Estimates Program |
| 2022 | 57,245 | Population Estimates Program |
| 2023 | 57,776 | Population Estimates Program |
| 2024 | 57,974 | 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)
- Historical (Pre-2000) Stanford/CESTA Historical US City Populations and NHGIS (1790–1990)