| County : | Columbia County |
| State : | Oregon (OR) |
| Land Area : | 657.35 sq mi |
| Water Area : | 30.97 sq mi |
| Latitude : | 45.9419320 |
| Longitude : | -123.0810790 |
| Population (2010): | 49,351 |
| Population Estimate (2012) : | 49,317 |
| Population Density : | 75.08/sq mi |
| Housing Units (2012) : | 20,698 |
| Median Household Income (2012) : | $55,358 (Oregon : $50,036, USA : $53,046) |
| Median Family Income (2012) : | $64,674 (Oregon : $61,438, USA : $64,585) |
| Median House Price (2012) : | $220,400 (Oregon : $246,100, USA : $181,400) |
Columbia County Cities / Towns
| Clatskanie City (1,737) | Columbia City (1,946) | Deer Island (294) |
| Prescott City (55) | Rainier City (1,895) | St. Helens City (12,883) |
| Scappoose City (6,592) | Vernonia City (2,151) | Warren (1,787) |
Columbia County Zip Codes
| 97016 (6,083) | 97018 (1,952) | 97048 (6,691) |
| 97051 (15,957) | 97053 (3,247) | 97054 (1,579) |
| 97056 (11,497) | 97064 (3,464) | 97231 (4,280) |