| | Hernando Beach, FL | Cedar Key, FL | United States |
| Population | 2,544 | 897 | 329,725,481 |
| Female Population | 50.4% | 51.1% | 50.5% |
| Male Population | 49.7% | 48.9% | 49.5% |
| Median Age | 57.8 | 54.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,388 | 729 | 309,327,143 |
| Population - 2000 | 2,185 | 790 | 285,036,114 |
| Population - 1990 | 1,767 | 668 | 251,960,433 |
| Pop. 2000 to Now | 31.2% | -8.1% | 15.6% |
| Pop. 1990 to Now | 62.2% | 8.7% | 30.8% |
| space4 | | | |
| Population Density | 717.2 | 925.7 | 93.4 |
| Land Area | 3.5 | 1.0 | 3,531,905.4 |
| Water Area | 1.3 | 1.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hernando Beach, FL | Cedar Key, FL | United States |
| Age 0 to 4 | 2.0% | 5.5% | 5.9% |
| Age 5 to 9 | 1.5% | 0.0% | 6.1% |
| Age 10 to 14 | 2.1% | 3.3% | 6.6% |
| Age 15 to 17 | 2.8% | 1.0% | 3.9% |
| Age 18 to 20 | 4.4% | 8.4% | 4.0% |
| Age 21 to 24 | 2.7% | 9.4% | 5.2% |
| Age 25 to 34 | 4.8% | 8.7% | 13.8% |
| Age 35 to 44 | 5.0% | 3.9% | 12.9% |
| Age 45 to 54 | 17.1% | 11.1% | 12.6% |
| Age 55 to 59 | 15.8% | 3.9% | 6.7% |
| Age 60 to 64 | 9.9% | 6.5% | 6.3% |
| Age 65 to 74 | 20.2% | 21.0% | 9.6% |
| Age 75 to 84 | 8.4% | 15.9% | 4.5% |
| Age 85 and over | 3.2% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hernando Beach, FL | Cedar Key, FL | United States |
| White | 85.1% | 87.3% | 59.4% |
| Black | 0.0% | 10.1% | 12.2% |
| Asian | 1.7% | 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 | 2.7% | 2.6% | 3.2% |
| Hispanic | 10.5% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hernando Beach, FL | Cedar Key, FL | United States |
| Married Population | 69.4% | 53.9% | 49.8% |
| Currently Married | 68.9% | 53.5% | 48.0% |
| Married but Separated | 0.5% | 0.4% | 1.8% |
| Single Population | 30.6% | 46.1% | 50.2% |
| Never Married | 16.6% | 28.0% | 33.8% |
| Divorced | 10.5% | 12.6% | 10.8% |
| Widowed | 3.4% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.25 | 2.60 |
| Households | 1,112 | 391 | 124,010,992 |
| Family Households | 921 | 275 | 80,755,759 |
| Married couple, w/children | 11.6% | 10.5% | 30.5% |
| Married couple, no children | 77.7% | 55.3% | 42.9% |
| Non Family Households | 191 | 116 | 43,255,233 |
| Single householder, w/children | 1.3% | 22.2% | 15.8% |
| Single householder, no children | 9.3% | 12.0% | 10.8% |