| | Troutdale, OR | Manhattan Beach, CA | United States |
| Population | 16,353 | 35,585 | 329,725,481 |
| Female Population | 48.9% | 50.7% | 50.5% |
| Male Population | 51.1% | 49.3% | 49.5% |
| Median Age | 34.3 | 42.8 | 38.4 |
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| Population - 2010 | 16,006 | 35,149 | 309,327,143 |
| Population - 2000 | 13,777 | 33,852 | 285,036,114 |
| Population - 1990 | 7,852 | 32,063 | 251,960,433 |
| Pop. 2000 to Now | 19.1% | 1.3% | 15.6% |
| Pop. 1990 to Now | 108.9% | 7.0% | 30.8% |
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| Population Density | 2,754.4 | 9,038.6 | 93.4 |
| Land Area | 5.9 | 3.9 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Troutdale, OR | Manhattan Beach, CA | United States |
| Age 0 to 4 | 9.2% | 4.9% | 5.9% |
| Age 5 to 9 | 7.0% | 8.4% | 6.1% |
| Age 10 to 14 | 8.8% | 8.6% | 6.6% |
| Age 15 to 17 | 3.6% | 5.7% | 3.9% |
| Age 18 to 20 | 3.3% | 1.8% | 4.0% |
| Age 21 to 24 | 4.2% | 2.0% | 5.2% |
| Age 25 to 34 | 15.3% | 8.2% | 13.8% |
| Age 35 to 44 | 14.5% | 13.9% | 12.9% |
| Age 45 to 54 | 13.8% | 16.3% | 12.6% |
| Age 55 to 59 | 5.2% | 7.3% | 6.7% |
| Age 60 to 64 | 4.8% | 7.3% | 6.3% |
| Age 65 to 74 | 7.9% | 9.0% | 9.6% |
| Age 75 to 84 | 1.7% | 4.8% | 4.5% |
| Age 85 and over | 0.8% | 1.8% | 1.9% |
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| Race | | | |
| | Troutdale, OR | Manhattan Beach, CA | United States |
| White | 71.0% | 71.3% | 59.4% |
| Black | 2.0% | 0.5% | 12.2% |
| Asian | 4.4% | 14.7% | 5.6% |
| Native American | 0.7% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.8% | 0.3% | 0.4% |
| Two or More Races | 5.8% | 5.5% | 3.2% |
| Hispanic | 15.2% | 7.6% | 18.4% |
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| Marriage & Family | | | |
| | Troutdale, OR | Manhattan Beach, CA | United States |
| Married Population | 52.7% | 59.8% | 49.8% |
| Currently Married | 51.5% | 58.9% | 48.0% |
| Married but Separated | 1.2% | 1.0% | 1.8% |
| Single Population | 47.3% | 40.2% | 50.2% |
| Never Married | 33.5% | 26.5% | 33.8% |
| Divorced | 10.4% | 9.2% | 10.8% |
| Widowed | 3.4% | 4.5% | 5.6% |
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| Household Size | 3.02 | 2.65 | 2.60 |
| Households | 5,396 | 13,422 | 124,010,992 |
| Family Households | 3,894 | 9,317 | 80,755,759 |
| Married couple, w/children | 39.9% | 44.6% | 30.5% |
| Married couple, no children | 36.8% | 40.3% | 42.9% |
| Non Family Households | 1,502 | 4,105 | 43,255,233 |
| Single householder, w/children | 12.7% | 8.2% | 15.8% |
| Single householder, no children | 10.7% | 6.9% | 10.8% |