| | Williamsburg, FL | Doctor Phillips, FL | United States |
| Population | 7,449 | 12,368 | 329,725,481 |
| Female Population | 50.9% | 51.3% | 50.5% |
| Male Population | 49.1% | 48.7% | 49.5% |
| Median Age | 42.9 | 43.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 6,852 | 11,226 | 309,327,143 |
| Population - 2000 | 6,736 | 9,548 | 285,036,114 |
| Population - 1990 | 3,093 | 7,963 | 251,960,433 |
| Pop. 2000 to Now | 33.3% | 30.0% | 15.6% |
| Pop. 1990 to Now | 190.3% | 55.9% | 30.8% |
| space4 | | | |
| Population Density | 2,088.9 | 3,895.4 | 93.4 |
| Land Area | 3.6 | 3.2 | 3,531,905.4 |
| Water Area | 0.1 | 1.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Williamsburg, FL | Doctor Phillips, FL | United States |
| Age 0 to 4 | 5.1% | 2.9% | 5.9% |
| Age 5 to 9 | 3.0% | 4.8% | 6.1% |
| Age 10 to 14 | 3.0% | 4.5% | 6.6% |
| Age 15 to 17 | 3.6% | 1.9% | 3.9% |
| Age 18 to 20 | 1.2% | 1.8% | 4.0% |
| Age 21 to 24 | 4.6% | 6.5% | 5.2% |
| Age 25 to 34 | 14.0% | 17.4% | 13.8% |
| Age 35 to 44 | 17.7% | 12.1% | 12.9% |
| Age 45 to 54 | 14.6% | 11.0% | 12.6% |
| Age 55 to 59 | 5.3% | 7.6% | 6.7% |
| Age 60 to 64 | 6.0% | 7.3% | 6.3% |
| Age 65 to 74 | 11.5% | 12.6% | 9.6% |
| Age 75 to 84 | 7.2% | 7.9% | 4.5% |
| Age 85 and over | 3.2% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Williamsburg, FL | Doctor Phillips, FL | United States |
| White | 59.0% | 55.4% | 59.4% |
| Black | 4.2% | 10.6% | 12.2% |
| Asian | 4.6% | 11.8% | 5.6% |
| Native American | 2.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 3.3% | 0.0% | 0.2% |
| Other | 1.8% | 2.1% | 0.4% |
| Two or More Races | 3.4% | 7.0% | 3.2% |
| Hispanic | 21.5% | 13.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Williamsburg, FL | Doctor Phillips, FL | United States |
| Married Population | 44.4% | 55.6% | 49.8% |
| Currently Married | 43.1% | 55.0% | 48.0% |
| Married but Separated | 1.3% | 0.6% | 1.8% |
| Single Population | 55.6% | 44.4% | 50.2% |
| Never Married | 33.1% | 29.8% | 33.8% |
| Divorced | 14.9% | 9.8% | 10.8% |
| Widowed | 7.6% | 4.8% | 5.6% |
| space5 | | | |
| Household Size | 2.34 | 2.69 | 2.60 |
| Households | 3,180 | 4,594 | 124,010,992 |
| Family Households | 1,944 | 3,247 | 80,755,759 |
| Married couple, w/children | 24.1% | 24.2% | 30.5% |
| Married couple, no children | 46.9% | 57.8% | 42.9% |
| Non Family Households | 1,236 | 1,347 | 43,255,233 |
| Single householder, w/children | 10.6% | 6.9% | 15.8% |
| Single householder, no children | 18.3% | 11.1% | 10.8% |