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> Washington > Zip Code 98040
| Zip Code : | 98040 |
| City : | Mercer Island city |
| County : | King County |
| State : | Washington (WA) |
| Land Area : | 6.32 sq mi |
| Water Area : | 6.79 sq mi |
| Latitude : | 47.5677164 |
| Longitude : | -122.2327755 |
| Population (2010): | 22,699 |
| Population Estimate (2012) : | 22,922 |
| Population Density : | 3,591.26/sq mi |
| Housing Units (2012) : | 9,930 |
| Median Household Income (2012) : | $127,360 (Washington : $59,374, USA : $53,046) |
| Median Family Income (2012) : | $154,050 (Washington : $71,939, USA : $64,585) |
| Median House Price (2012) : | $880,700 (Washington : $272,900, USA : $181,400) |