| | Flagler Estates, FL | Hastings, FL | United States |
| Population | 3,577 | 824 | 329,725,481 |
| Female Population | 47.0% | 43.1% | 50.5% |
| Male Population | 53.0% | 56.9% | 49.5% |
| Median Age | 34.8 | 49.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,886 | 697 | 309,327,143 |
| Population - 2000 | 1,908 | 521 | 285,036,114 |
| Population - 1990 | 583 | 595 | 251,960,433 |
| Pop. 2000 to Now | 126.9% | 105.4% | 15.6% |
| Pop. 1990 to Now | 642.7% | 79.8% | 30.8% |
| space4 | | | |
| Population Density | 302.2 | 499.1 | 93.4 |
| Land Area | 11.8 | 1.7 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Flagler Estates, FL | Hastings, FL | United States |
| Age 0 to 4 | 2.5% | 9.6% | 5.9% |
| Age 5 to 9 | 11.9% | 3.8% | 6.1% |
| Age 10 to 14 | 10.3% | 2.4% | 6.6% |
| Age 15 to 17 | 4.8% | 12.0% | 3.9% |
| Age 18 to 20 | 1.3% | 4.0% | 4.0% |
| Age 21 to 24 | 3.4% | 1.0% | 5.2% |
| Age 25 to 34 | 17.4% | 10.0% | 13.8% |
| Age 35 to 44 | 15.7% | 6.4% | 12.9% |
| Age 45 to 54 | 12.3% | 9.5% | 12.6% |
| Age 55 to 59 | 8.0% | 6.8% | 6.7% |
| Age 60 to 64 | 3.5% | 15.9% | 6.3% |
| Age 65 to 74 | 6.2% | 13.4% | 9.6% |
| Age 75 to 84 | 2.4% | 2.1% | 4.5% |
| Age 85 and over | 0.2% | 3.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Flagler Estates, FL | Hastings, FL | United States |
| White | 76.0% | 51.9% | 59.4% |
| Black | 3.5% | 41.4% | 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 | 9.9% | 0.0% | 3.2% |
| Hispanic | 10.5% | 6.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Flagler Estates, FL | Hastings, FL | United States |
| Married Population | 61.9% | 23.5% | 49.8% |
| Currently Married | 56.6% | 21.3% | 48.0% |
| Married but Separated | 5.2% | 2.2% | 1.8% |
| Single Population | 38.1% | 76.5% | 50.2% |
| Never Married | 24.3% | 39.9% | 33.8% |
| Divorced | 8.4% | 28.2% | 10.8% |
| Widowed | 5.5% | 8.4% | 5.6% |
| space5 | | | |
| Household Size | 2.64 | 2.31 | 2.60 |
| Households | 1,353 | 288 | 124,010,992 |
| Family Households | 889 | 151 | 80,755,759 |
| Married couple, w/children | 48.9% | 6.6% | 30.5% |
| Married couple, no children | 24.0% | 43.7% | 42.9% |
| Non Family Households | 464 | 137 | 43,255,233 |
| Single householder, w/children | 23.6% | 22.5% | 15.8% |
| Single householder, no children | 3.5% | 27.2% | 10.8% |