| City : | Vandalia City |
| County : | Montgomery County, Parker County |
| State : | Ohio (OH) |
| | |
| Land Area : | 12.34 sq mi |
| Water Area : | 0.07 sq mi |
| Latitude : | 39.8789685 |
| Longitude : | -84.1922372 |
| | |
| Population (2010): | 15,246 |
| Population Estimate (2012) : | 15,194 |
| Population Density : | 1,235.10/sq mi |
| Housing Units (2012) : | 7,055 |
| Median Household Income (2012) : | $52,569 (Ohio : $48,246, USA : $53,046) |
| Median Family Income (2012) : | $64,109 (Ohio : $61,163, USA : $64,585) |
| Median House Price (2012) : | $139,000 (Ohio : $133,700, USA : $181,400) |