| | Weeki Wachee Gardens, FL | Springhill, FL | United States |
| Population | 877 | 63 | 329,725,481 |
| Female Population | 61.9% | 61.9% | 50.5% |
| Male Population | 38.1% | 38.1% | 49.5% |
| Median Age | 38.4 | 64.7 | 38.4 |
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| Population - 2010 | 1,076 | 141 | 309,327,143 |
| Population - 2000 | 1,140 | 129 | 285,036,114 |
| Population - 1990 | 1,170 | 79 | 251,960,433 |
| Pop. 2000 to Now | 65.8% | 14.7% | 15.6% |
| Pop. 1990 to Now | 61.5% | 87.3% | 30.8% |
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| Population Density | 699.4 | 5.0 | 93.4 |
| Land Area | 1.3 | 12.5 | 3,531,905.4 |
| Water Area | 0.2 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Weeki Wachee Gardens, FL | Springhill, FL | United States |
| Age 0 to 4 | 0.5% | 0.0% | 5.9% |
| Age 5 to 9 | 18.5% | 0.0% | 6.1% |
| Age 10 to 14 | 2.1% | 0.0% | 6.6% |
| Age 15 to 17 | 0.0% | 0.0% | 3.9% |
| Age 18 to 20 | 1.5% | 0.0% | 4.0% |
| Age 21 to 24 | 0.0% | 0.0% | 5.2% |
| Age 25 to 34 | 3.6% | 0.0% | 13.8% |
| Age 35 to 44 | 37.3% | 0.0% | 12.9% |
| Age 45 to 54 | 1.6% | 7.9% | 12.6% |
| Age 55 to 59 | 4.4% | 31.7% | 6.7% |
| Age 60 to 64 | 11.1% | 15.9% | 6.3% |
| Age 65 to 74 | 10.9% | 44.4% | 9.6% |
| Age 75 to 84 | 6.3% | 0.0% | 4.5% |
| Age 85 and over | 2.3% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Weeki Wachee Gardens, FL | Springhill, FL | United States |
| White | 96.5% | 100.0% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 0.0% | 3.2% |
| Hispanic | 3.5% | 0.0% | 18.4% |
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| Marriage & Family | | | |
| | Weeki Wachee Gardens, FL | Springhill, FL | United States |
| Married Population | 59.6% | 95.2% | 49.8% |
| Currently Married | 57.1% | 95.2% | 48.0% |
| Married but Separated | 2.5% | 0.0% | 1.8% |
| Single Population | 40.4% | 4.8% | 50.2% |
| Never Married | 3.9% | 4.8% | 33.8% |
| Divorced | 26.7% | 0.0% | 10.8% |
| Widowed | 9.8% | 0.0% | 5.6% |
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| Household Size | 2.71 | 2.10 | 2.60 |
| Households | 324 | 30 | 124,010,992 |
| Family Households | 219 | 30 | 80,755,759 |
| Married couple, w/children | 53.0% | 0.0% | 30.5% |
| Married couple, no children | 27.9% | 100.0% | 42.9% |
| Non Family Households | 105 | 0 | 43,255,233 |
| Single householder, w/children | 6.8% | 0.0% | 15.8% |
| Single householder, no children | 12.3% | 0.0% | 10.8% |