| | Frankford, DE | Fox Island, WA | United States |
| Population | 1,088 | 3,534 | 329,725,481 |
| Female Population | 49.5% | 49.3% | 50.5% |
| Male Population | 50.5% | 50.7% | 49.5% |
| Median Age | 32.4 | 48.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 848 | 2,983 | 309,327,143 |
| Population - 2000 | 714 | 2,803 | 285,036,114 |
| Population - 1990 | 591 | 2,017 | 251,960,433 |
| Pop. 2000 to Now | 42.9% | 48.6% | 15.6% |
| Pop. 1990 to Now | 72.6% | 106.5% | 30.8% |
| space4 | | | |
| Population Density | 1,492.5 | 681.2 | 93.4 |
| Land Area | 0.7 | 5.2 | 3,531,905.4 |
| Water Area | 0.0 | 1.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Frankford, DE | Fox Island, WA | United States |
| Age 0 to 4 | 12.8% | 4.6% | 5.9% |
| Age 5 to 9 | 7.4% | 4.6% | 6.1% |
| Age 10 to 14 | 6.6% | 6.5% | 6.6% |
| Age 15 to 17 | 3.3% | 3.5% | 3.9% |
| Age 18 to 20 | 3.8% | 2.9% | 4.0% |
| Age 21 to 24 | 5.2% | 2.8% | 5.2% |
| Age 25 to 34 | 18.5% | 8.2% | 13.8% |
| Age 35 to 44 | 10.4% | 11.8% | 12.9% |
| Age 45 to 54 | 12.4% | 16.2% | 12.6% |
| Age 55 to 59 | 5.3% | 5.3% | 6.7% |
| Age 60 to 64 | 3.9% | 9.5% | 6.3% |
| Age 65 to 74 | 3.9% | 14.5% | 9.6% |
| Age 75 to 84 | 5.1% | 8.4% | 4.5% |
| Age 85 and over | 1.6% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Frankford, DE | Fox Island, WA | United States |
| White | 23.2% | 89.5% | 59.4% |
| Black | 33.0% | 0.0% | 12.2% |
| Asian | 3.7% | 1.0% | 5.6% |
| Native American | 3.1% | 0.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 5.4% | 4.0% | 3.2% |
| Hispanic | 31.6% | 4.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Frankford, DE | Fox Island, WA | United States |
| Married Population | 45.0% | 68.6% | 49.8% |
| Currently Married | 42.7% | 67.4% | 48.0% |
| Married but Separated | 2.4% | 1.2% | 1.8% |
| Single Population | 55.0% | 31.4% | 50.2% |
| Never Married | 38.9% | 18.2% | 33.8% |
| Divorced | 5.1% | 8.0% | 10.8% |
| Widowed | 10.9% | 5.2% | 5.6% |
| space5 | | | |
| Household Size | 3.68 | 2.58 | 2.60 |
| Households | 296 | 1,371 | 124,010,992 |
| Family Households | 222 | 1,042 | 80,755,759 |
| Married couple, w/children | 50.0% | 35.0% | 30.5% |
| Married couple, no children | 18.9% | 58.9% | 42.9% |
| Non Family Households | 74 | 329 | 43,255,233 |
| Single householder, w/children | 17.1% | 0.7% | 15.8% |
| Single householder, no children | 14.0% | 5.4% | 10.8% |