| City : | St. Helena City |
| County : | Burke County, Livingston County, Napa County |
| State : | California (CA) |
| | |
| Land Area : | 4.99 sq mi |
| Water Area : | 0.04 sq mi |
| Latitude : | 38.5040450 |
| Longitude : | -122.4677325 |
| | |
| Population (2010): | 5,814 |
| Population Estimate (2012) : | 5,846 |
| Population Density : | 1,166.15/sq mi |
| Housing Units (2012) : | 2,776 |
| Median Household Income (2012) : | $71,118 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $79,593 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $904,000 (California : $383,900, USA : $181,400) |