the resident population of the United States more»
| City: | O Fallon |
| State: | Missouri |
| Area Code: | 636 |
| Latitude: | 38.853499 |
| Longitude: | -90.702670 |
| Time Zone: | Eastern GMT -6 |
| City Alias(es): | Cottleville Dardenne , Dardenne Pr , Dardenne Prairie , Ofallon , Saint Charles , Saint Paul , Saint Peters , St Peters |
| Population: | 49,650 |
| 2000 Population: | 57,519 |
| White Population: | 54,863 |
| Black Population: | 1,208 |
| Hispanic Population: | 851 |
| Asian Population: | 415 |
| Hawaiian Population: | 140 |
| Indian Population: | 24 |
| Other Population: | 232 |
| Male Population: | 28,498 |
| Female Population: | 29,021 |
| Median Age: | 31.80 |
| Male Median Age: | 31.50 |
| Female Median Age: | 32.10 |
| Households: | 20,583 |
| Average Household Size: | 2.89 |
| Average House Value: | $135,900 |
| Average Household Income: | $57,342 |
| Number of Businesses: | 1,295 |
| Number of Employees: | 22,949 |
| Annual Payroll: | $851,816,000 |
| Land Area: | 94.705 sq mi |
| Water Area: | 1.484 sq mi |
Lake Saint Louis, MO ( 4.2 miles)
Saint Peters, MO ( 5.2 miles)
Cottleville, MO ( 5.3 miles)
Wentzville, MO ( 6.8 miles)
Flinthill, MO ( 8.6 miles)
Saint Charles, MO ( 8.9 miles)
Old Monroe, MO ( 9.4 miles)
Defiance, MO ( 10.2 miles)
New Melle, MO ( 10.5 miles)