| | Trout Lake, WA | Naches, WA | United States |
| Population | 732 | 729 | 329,725,481 |
| Female Population | 44.4% | 56.0% | 50.5% |
| Male Population | 55.6% | 44.0% | 49.5% |
| Median Age | 49.3 | 40.8 | 38.4 |
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| Population - 2010 | 514 | 828 | 309,327,143 |
| Population - 2000 | 494 | 643 | 285,036,114 |
| Population - 1990 | 464 | 596 | 251,960,433 |
| Pop. 2000 to Now | 43.1% | 30.8% | 15.6% |
| Pop. 1990 to Now | 52.4% | 41.1% | 30.8% |
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| Population Density | 105.5 | 1,078.4 | 93.4 |
| Land Area | 6.9 | 0.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Trout Lake, WA | Naches, WA | United States |
| Age 0 to 4 | 2.6% | 7.4% | 5.9% |
| Age 5 to 9 | 4.8% | 3.8% | 6.1% |
| Age 10 to 14 | 4.6% | 4.3% | 6.6% |
| Age 15 to 17 | 1.4% | 4.1% | 3.9% |
| Age 18 to 20 | 8.2% | 2.1% | 4.0% |
| Age 21 to 24 | 2.9% | 3.6% | 5.2% |
| Age 25 to 34 | 12.8% | 18.1% | 13.8% |
| Age 35 to 44 | 10.5% | 10.0% | 12.9% |
| Age 45 to 54 | 13.1% | 13.3% | 12.6% |
| Age 55 to 59 | 9.6% | 10.6% | 6.7% |
| Age 60 to 64 | 4.9% | 4.4% | 6.3% |
| Age 65 to 74 | 14.9% | 8.4% | 9.6% |
| Age 75 to 84 | 9.0% | 3.7% | 4.5% |
| Age 85 and over | 0.7% | 6.3% | 1.9% |
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| Race | | | |
| | Trout Lake, WA | Naches, WA | United States |
| White | 82.5% | 84.1% | 59.4% |
| Black | 0.0% | 0.7% | 12.2% |
| Asian | 1.2% | 0.0% | 5.6% |
| Native American | 0.0% | 1.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 1.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 12.8% | 1.0% | 3.2% |
| Hispanic | 3.4% | 11.7% | 18.4% |
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| Marriage & Family | | | |
| | Trout Lake, WA | Naches, WA | United States |
| Married Population | 74.2% | 54.5% | 49.8% |
| Currently Married | 74.2% | 54.1% | 48.0% |
| Married but Separated | 0.0% | 0.5% | 1.8% |
| Single Population | 25.8% | 45.5% | 50.2% |
| Never Married | 21.7% | 24.7% | 33.8% |
| Divorced | 1.7% | 13.8% | 10.8% |
| Widowed | 2.3% | 7.0% | 5.6% |
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| Household Size | 2.70 | 2.13 | 2.60 |
| Households | 271 | 343 | 124,010,992 |
| Family Households | 217 | 228 | 80,755,759 |
| Married couple, w/children | 19.8% | 18.0% | 30.5% |
| Married couple, no children | 73.3% | 53.1% | 42.9% |
| Non Family Households | 54 | 115 | 43,255,233 |
| Single householder, w/children | 2.3% | 14.0% | 15.8% |
| Single householder, no children | 4.6% | 14.9% | 10.8% |