| | Gantt, SC | Denver, IA | United States |
| Population | 14,790 | 1,873 | 329,725,481 |
| Female Population | 55.8% | 53.1% | 50.5% |
| Male Population | 44.2% | 46.9% | 49.5% |
| Median Age | 33.9 | 36.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 13,874 | 1,767 | 309,327,143 |
| Population - 2000 | 13,962 | 1,627 | 285,036,114 |
| Population - 1990 | 13,891 | 1,600 | 251,960,433 |
| Pop. 2000 to Now | 19.5% | 15.5% | 15.6% |
| Pop. 1990 to Now | 20.1% | 17.4% | 30.8% |
| space4 | | | |
| Population Density | 1,510.9 | 1,196.0 | 93.4 |
| Land Area | 9.8 | 1.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gantt, SC | Denver, IA | United States |
| Age 0 to 4 | 9.3% | 8.1% | 5.9% |
| Age 5 to 9 | 10.6% | 9.5% | 6.1% |
| Age 10 to 14 | 6.1% | 8.0% | 6.6% |
| Age 15 to 17 | 4.2% | 3.6% | 3.9% |
| Age 18 to 20 | 2.8% | 2.5% | 4.0% |
| Age 21 to 24 | 7.9% | 3.9% | 5.2% |
| Age 25 to 34 | 10.4% | 11.6% | 13.8% |
| Age 35 to 44 | 14.0% | 14.9% | 12.9% |
| Age 45 to 54 | 11.2% | 10.9% | 12.6% |
| Age 55 to 59 | 5.3% | 5.6% | 6.7% |
| Age 60 to 64 | 4.3% | 5.0% | 6.3% |
| Age 65 to 74 | 8.1% | 8.9% | 9.6% |
| Age 75 to 84 | 4.1% | 5.4% | 4.5% |
| Age 85 and over | 1.4% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gantt, SC | Denver, IA | United States |
| White | 24.2% | 96.9% | 59.4% |
| Black | 50.9% | 0.0% | 12.2% |
| Asian | 0.1% | 0.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 1.8% | 2.0% | 3.2% |
| Hispanic | 22.9% | 0.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gantt, SC | Denver, IA | United States |
| Married Population | 43.7% | 65.4% | 49.8% |
| Currently Married | 39.6% | 64.2% | 48.0% |
| Married but Separated | 4.0% | 1.2% | 1.8% |
| Single Population | 56.3% | 34.6% | 50.2% |
| Never Married | 38.0% | 20.5% | 33.8% |
| Divorced | 10.1% | 6.6% | 10.8% |
| Widowed | 8.2% | 7.5% | 5.6% |
| space5 | | | |
| Household Size | 2.68 | 2.55 | 2.60 |
| Households | 5,512 | 724 | 124,010,992 |
| Family Households | 3,718 | 500 | 80,755,759 |
| Married couple, w/children | 21.2% | 48.8% | 30.5% |
| Married couple, no children | 31.6% | 40.8% | 42.9% |
| Non Family Households | 1,794 | 224 | 43,255,233 |
| Single householder, w/children | 33.2% | 8.6% | 15.8% |
| Single householder, no children | 13.9% | 1.8% | 10.8% |