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> Washington > Zip Code 99338
| Zip Code : | 99338 |
| City : | Kennewick city, Richland city |
| County : | Benton County |
| State : | Washington (WA) |
| Land Area : | 66.38 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 46.1478606 |
| Longitude : | -119.2734751 |
| Population (2010): | 11,555 |
| Population Estimate (2012) : | 11,701 |
| Population Density : | 174.07/sq mi |
| Housing Units (2012) : | 4,095 |
| Median Household Income (2012) : | $93,814 (Washington : $59,374, USA : $53,046) |
| Median Family Income (2012) : | $107,413 (Washington : $71,939, USA : $64,585) |
| Median House Price (2012) : | $255,000 (Washington : $272,900, USA : $181,400) |