
Casey is a city in Illinois in the United States.
As of 2020, 2,404 people live there.
| Historical population | |||
|---|---|---|---|
| Census | Pop. | %± | |
| 1880 | 778 | — | |
| 1890 | 844 | 8.5% | |
| 1900 | 1,500 | 77.7% | |
| 1910 | 2,157 | 43.8% | |
| 1920 | 2,189 | 1.5% | |
| 1930 | 2,200 | 0.5% | |
| 1940 | 2,543 | 15.6% | |
| 1950 | 2,734 | 7.5% | |
| 1960 | 2,890 | 5.7% | |
| 1970 | 2,994 | 3.6% | |
| 1980 | 3,026 | 1.1% | |
| 1990 | 2,914 | −3.7% | |
| 2000 | 2,942 | 1.0% | |
| 2010 | 2,769 | −5.9% | |
| 2020 | 2,404 | −13.2% | |
| U.S. Decennial Census | |||