| | Camas, WA | Rocky River, OH | United States |
| Population | 25,774 | 21,515 | 329,725,481 |
| Female Population | 50.8% | 54.5% | 50.5% |
| Male Population | 49.3% | 45.5% | 49.5% |
| Median Age | 41.6 | 44.1 | 38.4 |
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| Population - 2010 | 19,914 | 20,189 | 309,327,143 |
| Population - 2000 | 12,534 | 20,735 | 285,036,114 |
| Population - 1990 | 6,442 | 20,410 | 251,960,433 |
| Pop. 2000 to Now | 107.3% | -4.0% | 15.6% |
| Pop. 1990 to Now | 303.3% | -2.5% | 30.8% |
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| Population Density | 1,848.9 | 4,544.8 | 93.4 |
| Land Area | 13.9 | 4.7 | 3,531,905.4 |
| Water Area | 1.7 | 0.9 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Camas, WA | Rocky River, OH | United States |
| Age 0 to 4 | 4.8% | 6.8% | 5.9% |
| Age 5 to 9 | 7.4% | 7.3% | 6.1% |
| Age 10 to 14 | 8.6% | 5.4% | 6.6% |
| Age 15 to 17 | 6.2% | 2.9% | 3.9% |
| Age 18 to 20 | 3.0% | 1.4% | 4.0% |
| Age 21 to 24 | 2.6% | 3.1% | 5.2% |
| Age 25 to 34 | 9.1% | 12.7% | 13.8% |
| Age 35 to 44 | 14.5% | 11.3% | 12.9% |
| Age 45 to 54 | 17.5% | 11.7% | 12.6% |
| Age 55 to 59 | 6.8% | 6.4% | 6.7% |
| Age 60 to 64 | 6.1% | 6.7% | 6.3% |
| Age 65 to 74 | 9.3% | 13.9% | 9.6% |
| Age 75 to 84 | 3.1% | 6.6% | 4.5% |
| Age 85 and over | 1.0% | 3.7% | 1.9% |
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| Race | | | |
| | Camas, WA | Rocky River, OH | United States |
| White | 76.8% | 92.7% | 59.4% |
| Black | 1.5% | 1.4% | 12.2% |
| Asian | 10.6% | 1.6% | 5.6% |
| Native American | 0.8% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.0% | 0.2% |
| Other | 0.5% | 0.0% | 0.4% |
| Two or More Races | 5.9% | 2.3% | 3.2% |
| Hispanic | 3.8% | 1.9% | 18.4% |
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| Marriage & Family | | | |
| | Camas, WA | Rocky River, OH | United States |
| Married Population | 66.1% | 57.0% | 49.8% |
| Currently Married | 65.5% | 56.6% | 48.0% |
| Married but Separated | 0.6% | 0.5% | 1.8% |
| Single Population | 33.9% | 43.0% | 50.2% |
| Never Married | 22.2% | 26.6% | 33.8% |
| Divorced | 8.7% | 9.1% | 10.8% |
| Widowed | 3.0% | 7.2% | 5.6% |
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| Household Size | 2.88 | 2.19 | 2.60 |
| Households | 8,923 | 9,670 | 124,010,992 |
| Family Households | 7,215 | 5,531 | 80,755,759 |
| Married couple, w/children | 44.9% | 36.5% | 30.5% |
| Married couple, no children | 43.2% | 48.0% | 42.9% |
| Non Family Households | 1,708 | 4,139 | 43,255,233 |
| Single householder, w/children | 7.6% | 8.5% | 15.8% |
| Single householder, no children | 4.3% | 7.1% | 10.8% |