| | Williston, FL | Williston, VT | United States |
| Population | 2,946 | 9,980 | 329,725,481 |
| Female Population | 47.6% | 50.1% | 50.5% |
| Male Population | 52.4% | 49.9% | 49.5% |
| Median Age | 34.8 | 41.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,761 | 8,698 | 309,327,143 |
| Population - 2000 | 2,297 | 7,650 | 285,036,114 |
| Population - 1990 | 2,179 | 4,887 | 251,960,433 |
| Pop. 2000 to Now | 20.4% | 34.2% | 15.6% |
| Pop. 1990 to Now | 26.9% | 110.0% | 30.8% |
| space4 | | | |
| Population Density | 441.5 | 331.8 | 93.4 |
| Land Area | 6.7 | 30.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Williston, FL | Williston, VT | United States |
| Age 0 to 4 | 7.6% | 4.0% | 5.9% |
| Age 5 to 9 | 4.7% | 7.2% | 6.1% |
| Age 10 to 14 | 8.9% | 5.3% | 6.6% |
| Age 15 to 17 | 3.3% | 6.1% | 3.9% |
| Age 18 to 20 | 2.0% | 0.5% | 4.0% |
| Age 21 to 24 | 4.8% | 2.6% | 5.2% |
| Age 25 to 34 | 19.0% | 14.8% | 13.8% |
| Age 35 to 44 | 9.2% | 12.7% | 12.9% |
| Age 45 to 54 | 11.6% | 12.4% | 12.6% |
| Age 55 to 59 | 5.0% | 7.8% | 6.7% |
| Age 60 to 64 | 7.2% | 9.4% | 6.3% |
| Age 65 to 74 | 10.0% | 9.2% | 9.6% |
| Age 75 to 84 | 5.0% | 5.6% | 4.5% |
| Age 85 and over | 1.8% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Williston, FL | Williston, VT | United States |
| White | 70.4% | 89.8% | 59.4% |
| Black | 16.3% | 2.3% | 12.2% |
| Asian | 3.0% | 2.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.4% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.3% | 2.4% | 3.2% |
| Hispanic | 10.0% | 3.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Williston, FL | Williston, VT | United States |
| Married Population | 42.4% | 53.6% | 49.8% |
| Currently Married | 41.1% | 53.1% | 48.0% |
| Married but Separated | 1.3% | 0.5% | 1.8% |
| Single Population | 57.6% | 46.4% | 50.2% |
| Never Married | 32.4% | 30.0% | 33.8% |
| Divorced | 17.6% | 11.1% | 10.8% |
| Widowed | 7.6% | 5.3% | 5.6% |
| space5 | | | |
| Household Size | 2.71 | 2.42 | 2.60 |
| Households | 1,038 | 4,114 | 124,010,992 |
| Family Households | 687 | 2,803 | 80,755,759 |
| Married couple, w/children | 19.9% | 30.4% | 30.5% |
| Married couple, no children | 41.9% | 47.5% | 42.9% |
| Non Family Households | 351 | 1,311 | 43,255,233 |
| Single householder, w/children | 27.8% | 16.4% | 15.8% |
| Single householder, no children | 10.3% | 5.8% | 10.8% |