| City : | Frontenac City |
| County : | Benton County, Fairfield County, St. Louis County |
| State : | Missouri (MO) |
| | |
| Land Area : | 2.88 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 38.6299212 |
| Longitude : | -90.4189186 |
| | |
| Population (2010): | 3,482 |
| Population Estimate (2012) : | 3,473 |
| Population Density : | 1,208.67/sq mi |
| Housing Units (2012) : | 1,357 |
| Median Household Income (2012) : | $160,119 (Missouri : $47,333, USA : $53,046) |
| Median Family Income (2012) : | $173,854 (Missouri : $59,395, USA : $64,585) |
| Median House Price (2012) : | $611,000 (Missouri : $138,400, USA : $181,400) |