| | Prosser, WA | College Park, MD | United States |
| Population | 6,061 | 34,961 | 329,725,481 |
| Female Population | 54.7% | 48.1% | 50.5% |
| Male Population | 45.3% | 51.9% | 49.5% |
| Median Age | 33.1 | 21.6 | 38.4 |
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| Population - 2010 | 5,782 | 30,461 | 309,327,143 |
| Population - 2000 | 4,838 | 24,657 | 285,036,114 |
| Population - 1990 | 4,476 | 21,927 | 251,960,433 |
| Pop. 2000 to Now | 32.2% | 30.5% | 15.6% |
| Pop. 1990 to Now | 42.9% | 46.7% | 30.8% |
| space4 | | | |
| Population Density | 1,326.3 | 6,230.8 | 93.4 |
| Land Area | 4.6 | 5.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Prosser, WA | College Park, MD | United States |
| Age 0 to 4 | 4.1% | 4.1% | 5.9% |
| Age 5 to 9 | 11.0% | 1.5% | 6.1% |
| Age 10 to 14 | 11.3% | 2.9% | 6.6% |
| Age 15 to 17 | 3.2% | 1.4% | 3.9% |
| Age 18 to 20 | 1.0% | 35.4% | 4.0% |
| Age 21 to 24 | 8.0% | 14.6% | 5.2% |
| Age 25 to 34 | 15.3% | 13.0% | 13.8% |
| Age 35 to 44 | 7.7% | 8.1% | 12.9% |
| Age 45 to 54 | 12.8% | 6.8% | 12.6% |
| Age 55 to 59 | 4.5% | 3.0% | 6.7% |
| Age 60 to 64 | 5.6% | 2.8% | 6.3% |
| Age 65 to 74 | 7.6% | 3.9% | 9.6% |
| Age 75 to 84 | 4.9% | 1.7% | 4.5% |
| Age 85 and over | 3.0% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Prosser, WA | College Park, MD | United States |
| White | 41.7% | 43.2% | 59.4% |
| Black | 0.8% | 20.5% | 12.2% |
| Asian | 2.1% | 14.7% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.5% | 0.0% | 0.2% |
| Other | 0.0% | 0.5% | 0.4% |
| Two or More Races | 0.0% | 2.8% | 3.2% |
| Hispanic | 55.0% | 18.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Prosser, WA | College Park, MD | United States |
| Married Population | 47.7% | 20.5% | 49.8% |
| Currently Married | 45.2% | 19.2% | 48.0% |
| Married but Separated | 2.5% | 1.3% | 1.8% |
| Single Population | 52.3% | 79.5% | 50.2% |
| Never Married | 32.3% | 74.1% | 33.8% |
| Divorced | 12.5% | 3.6% | 10.8% |
| Widowed | 7.6% | 1.8% | 5.6% |
| space5 | | | |
| Household Size | 2.67 | 2.78 | 2.60 |
| Households | 2,272 | 8,673 | 124,010,992 |
| Family Households | 1,575 | 3,717 | 80,755,759 |
| Married couple, w/children | 23.0% | 31.2% | 30.5% |
| Married couple, no children | 41.1% | 41.6% | 42.9% |
| Non Family Households | 697 | 4,956 | 43,255,233 |
| Single householder, w/children | 29.3% | 9.9% | 15.8% |
| Single householder, no children | 6.5% | 17.4% | 10.8% |