| | Bethel, WA | Kenmore, WA | United States |
| Population | 4,056 | 23,556 | 329,725,481 |
| Female Population | 48.5% | 48.9% | 50.5% |
| Male Population | 51.5% | 51.1% | 49.5% |
| Median Age | 42 | 39.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,334 | 20,588 | 309,327,143 |
| Population - 2000 | 3,534 | 18,678 | 285,036,114 |
| Population - 1990 | 2,769 | 8,917 | 251,960,433 |
| Pop. 2000 to Now | 9.3% | 23.5% | 15.6% |
| Pop. 1990 to Now | 39.5% | 158.6% | 30.8% |
| space4 | | | |
| Population Density | 1,283.1 | 3,838.4 | 93.4 |
| Land Area | 3.2 | 6.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Bethel, WA | Kenmore, WA | United States |
| Age 0 to 4 | 4.1% | 5.9% | 5.9% |
| Age 5 to 9 | 6.8% | 6.1% | 6.1% |
| Age 10 to 14 | 5.6% | 5.8% | 6.6% |
| Age 15 to 17 | 4.2% | 3.3% | 3.9% |
| Age 18 to 20 | 2.4% | 2.6% | 4.0% |
| Age 21 to 24 | 3.6% | 2.2% | 5.2% |
| Age 25 to 34 | 11.4% | 17.5% | 13.8% |
| Age 35 to 44 | 16.0% | 13.7% | 12.9% |
| Age 45 to 54 | 11.2% | 14.6% | 12.6% |
| Age 55 to 59 | 5.7% | 6.8% | 6.7% |
| Age 60 to 64 | 10.4% | 5.5% | 6.3% |
| Age 65 to 74 | 12.2% | 9.2% | 9.6% |
| Age 75 to 84 | 5.5% | 4.6% | 4.5% |
| Age 85 and over | 1.0% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Bethel, WA | Kenmore, WA | United States |
| White | 71.9% | 69.7% | 59.4% |
| Black | 1.2% | 3.2% | 12.2% |
| Asian | 6.3% | 14.6% | 5.6% |
| Native American | 0.4% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 2.6% | 0.1% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 10.2% | 5.3% | 3.2% |
| Hispanic | 7.4% | 6.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Bethel, WA | Kenmore, WA | United States |
| Married Population | 59.4% | 56.4% | 49.8% |
| Currently Married | 57.6% | 55.6% | 48.0% |
| Married but Separated | 1.8% | 0.8% | 1.8% |
| Single Population | 40.6% | 43.6% | 50.2% |
| Never Married | 27.8% | 30.1% | 33.8% |
| Divorced | 11.0% | 10.6% | 10.8% |
| Widowed | 1.8% | 3.0% | 5.6% |
| space5 | | | |
| Household Size | 2.78 | 2.53 | 2.60 |
| Households | 1,459 | 9,266 | 124,010,992 |
| Family Households | 1,147 | 5,981 | 80,755,759 |
| Married couple, w/children | 27.2% | 42.3% | 30.5% |
| Married couple, no children | 52.0% | 42.6% | 42.9% |
| Non Family Households | 312 | 3,285 | 43,255,233 |
| Single householder, w/children | 11.6% | 6.2% | 15.8% |
| Single householder, no children | 9.2% | 8.9% | 10.8% |