- Latitude: 38°35'42" N (+38.5950)
- Longitude: 90°32'46" W (-90.5461)
- Elevation: 659 feet above sea level
- Land area: 9.0 square miles
As the crow flies, Ballwin is...
| Year | Population | Percent change |
|---|
| 1960 | 5,710 | -- |
| 1970 | 10,656 | +86.6% |
| 1980 | 12,656 | +18.8% |
| 1990 | 21,816 | +72.4% |
| 2000 | 31,283 | +43.4% |