| | Snoqualmie Pass, WA | Amboy, WA | United States |
| Population | 430 | 1,832 | 329,725,481 |
| Female Population | 40.5% | 53.6% | 50.5% |
| Male Population | 59.5% | 46.4% | 49.5% |
| Median Age | 47.3 | 29 | 38.4 |
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| Population - 2010 | 105 | 1,268 | 309,327,143 |
| Population - 2000 | 201 | 2,085 | 285,036,114 |
| Population - 1990 | 89 | 945 | 251,960,433 |
| Pop. 2000 to Now | 33.3% | 5.6% | 15.6% |
| Pop. 1990 to Now | 201.1% | 133.0% | 30.8% |
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| Population Density | 147.1 | 183.5 | 93.4 |
| Land Area | 2.9 | 10.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Snoqualmie Pass, WA | Amboy, WA | United States |
| Age 0 to 4 | 4.0% | 8.9% | 5.9% |
| Age 5 to 9 | 7.0% | 9.7% | 6.1% |
| Age 10 to 14 | 2.3% | 7.7% | 6.6% |
| Age 15 to 17 | 0.0% | 2.9% | 3.9% |
| Age 18 to 20 | 0.0% | 3.5% | 4.0% |
| Age 21 to 24 | 0.0% | 10.4% | 5.2% |
| Age 25 to 34 | 10.9% | 10.4% | 13.8% |
| Age 35 to 44 | 18.8% | 7.3% | 12.9% |
| Age 45 to 54 | 23.5% | 11.6% | 12.6% |
| Age 55 to 59 | 13.0% | 5.1% | 6.7% |
| Age 60 to 64 | 10.9% | 4.5% | 6.3% |
| Age 65 to 74 | 5.6% | 13.5% | 9.6% |
| Age 75 to 84 | 3.0% | 2.6% | 4.5% |
| Age 85 and over | 0.9% | 1.8% | 1.9% |
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| Race | | | |
| | Snoqualmie Pass, WA | Amboy, WA | United States |
| White | 94.4% | 88.3% | 59.4% |
| Black | 0.9% | 0.0% | 12.2% |
| Asian | 1.9% | 0.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.6% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 1.0% | 3.2% |
| Hispanic | 1.2% | 10.3% | 18.4% |
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| Marriage & Family | | | |
| | Snoqualmie Pass, WA | Amboy, WA | United States |
| Married Population | 63.5% | 59.3% | 49.8% |
| Currently Married | 62.5% | 58.7% | 48.0% |
| Married but Separated | 1.1% | 0.6% | 1.8% |
| Single Population | 36.5% | 40.7% | 50.2% |
| Never Married | 27.9% | 26.9% | 33.8% |
| Divorced | 3.5% | 3.3% | 10.8% |
| Widowed | 5.1% | 10.5% | 5.6% |
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| Household Size | 1.89 | 3.35 | 2.60 |
| Households | 220 | 547 | 124,010,992 |
| Family Households | 118 | 406 | 80,755,759 |
| Married couple, w/children | 22.9% | 38.2% | 30.5% |
| Married couple, no children | 70.3% | 48.8% | 42.9% |
| Non Family Households | 102 | 141 | 43,255,233 |
| Single householder, w/children | 0.0% | 8.1% | 15.8% |
| Single householder, no children | 6.8% | 4.9% | 10.8% |