| | Fellsmere, FL | Jasper, AR | United States |
| Population | 4,892 | 619 | 329,725,481 |
| Female Population | 44.3% | 46.7% | 50.5% |
| Male Population | 55.7% | 53.3% | 49.5% |
| Median Age | 32.2 | 47.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,168 | 524 | 309,327,143 |
| Population - 2000 | 3,813 | 498 | 285,036,114 |
| Population - 1990 | 2,179 | 332 | 251,960,433 |
| Pop. 2000 to Now | 50.9% | -3.8% | 15.6% |
| Pop. 1990 to Now | 164.0% | 44.3% | 30.8% |
| space4 | | | |
| Population Density | 85.0 | 1,109.3 | 93.4 |
| Land Area | 57.5 | 0.6 | 3,531,905.4 |
| Water Area | 0.2 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Fellsmere, FL | Jasper, AR | United States |
| Age 0 to 4 | 9.7% | 6.5% | 5.9% |
| Age 5 to 9 | 13.5% | 9.5% | 6.1% |
| Age 10 to 14 | 3.1% | 12.6% | 6.6% |
| Age 15 to 17 | 3.5% | 3.2% | 3.9% |
| Age 18 to 20 | 2.9% | 1.5% | 4.0% |
| Age 21 to 24 | 7.0% | 2.7% | 5.2% |
| Age 25 to 34 | 14.1% | 3.1% | 13.8% |
| Age 35 to 44 | 18.7% | 8.7% | 12.9% |
| Age 45 to 54 | 9.1% | 9.2% | 12.6% |
| Age 55 to 59 | 6.1% | 3.7% | 6.7% |
| Age 60 to 64 | 6.4% | 4.7% | 6.3% |
| Age 65 to 74 | 4.0% | 21.6% | 9.6% |
| Age 75 to 84 | 1.9% | 6.9% | 4.5% |
| Age 85 and over | 0.3% | 6.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Fellsmere, FL | Jasper, AR | United States |
| White | 12.1% | 88.5% | 59.4% |
| Black | 15.5% | 0.6% | 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% | 1.9% | 3.2% |
| Hispanic | 72.4% | 8.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Fellsmere, FL | Jasper, AR | United States |
| Married Population | 36.6% | 45.9% | 49.8% |
| Currently Married | 36.6% | 40.7% | 48.0% |
| Married but Separated | 0.0% | 5.2% | 1.8% |
| Single Population | 63.4% | 54.1% | 50.2% |
| Never Married | 47.8% | 18.6% | 33.8% |
| Divorced | 13.3% | 24.4% | 10.8% |
| Widowed | 2.2% | 11.1% | 5.6% |
| space5 | | | |
| Household Size | 3.77 | 2.48 | 2.60 |
| Households | 1,270 | 227 | 124,010,992 |
| Family Households | 963 | 81 | 80,755,759 |
| Married couple, w/children | 30.1% | 39.5% | 30.5% |
| Married couple, no children | 29.8% | 27.2% | 42.9% |
| Non Family Households | 307 | 146 | 43,255,233 |
| Single householder, w/children | 22.0% | 14.8% | 15.8% |
| Single householder, no children | 18.1% | 18.5% | 10.8% |