| Statistic | South Lake Union | Seattle | Washington |
| Population | 7,155 | 741,251 | 7,614,893 |
| Population density (sq mi) | 15,116 | 8,838 | 117 |
| Median age | 30.9 | 35.2 | 37.6 |
| Male/Female ratio | 1.4:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | n/a | 44% | 56% |
| Families w/ Kids under 18 | 24% | 40% | 44% |
| Speak English | n/a | 78% | 81% |
| Speak Spanish | n/a | 4% | 8% |
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| Race | South Lake Union | Seattle | Washington |
| White | 54.18% | 65.81% | 77.34% |
| Black | 4.43% | 7.06% | 3.63% |
| Asian | 32.03% | 16.31% | 7.80% |
| American Indian | 0.85% | 0.54% | 1.33% |
| Native Hawaiian | 0.52% | 0.26% | 0.63% |
| Mixed race | 7.30% | 7.64% | 5.34% |
| Other race | 0.69% | 2.38% | 3.92% |
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