| City : | St. Helens City |
| County : | Bethel Census Area, Clark County, Columbia County, Florence County, Jefferson County, Queen Anne's County |
| State : | Oregon (OR) |
| | |
| Land Area : | 4.53 sq mi |
| Water Area : | 0.98 sq mi |
| Latitude : | 45.8575445 |
| Longitude : | -122.8158116 |
| | |
| Population (2010): | 12,883 |
| Population Estimate (2012) : | 12,807 |
| Population Density : | 2,843.54/sq mi |
| Housing Units (2012) : | 5,154 |
| Median Household Income (2012) : | $53,151 (Oregon : $50,036, USA : $53,046) |
| Median Family Income (2012) : | $60,722 (Oregon : $61,438, USA : $64,585) |
| Median House Price (2012) : | $186,000 (Oregon : $246,100, USA : $181,400) |