| | Freeman, SD | Britt, IA | United States |
| Population | 1,711 | 1,922 | 329,725,481 |
| Female Population | 53.2% | 53.6% | 50.5% |
| Male Population | 46.8% | 46.4% | 49.5% |
| Median Age | 40.4 | 45.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,306 | 2,062 | 309,327,143 |
| Population - 2000 | 1,317 | 2,052 | 285,036,114 |
| Population - 1990 | 1,293 | 2,133 | 251,960,433 |
| Pop. 2000 to Now | -4.7% | -6.0% | 15.6% |
| Pop. 1990 to Now | -2.9% | -9.6% | 30.8% |
| space4 | | | |
| Population Density | 1,484.0 | 1,520.6 | 93.4 |
| Land Area | 1.2 | 1.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Freeman, SD | Britt, IA | United States |
| Age 0 to 4 | 10.3% | 4.6% | 5.9% |
| Age 5 to 9 | 14.1% | 3.7% | 6.1% |
| Age 10 to 14 | 8.8% | 7.8% | 6.6% |
| Age 15 to 17 | 2.9% | 4.5% | 3.9% |
| Age 18 to 20 | 1.4% | 4.3% | 4.0% |
| Age 21 to 24 | 2.5% | 3.5% | 5.2% |
| Age 25 to 34 | 6.7% | 8.9% | 13.8% |
| Age 35 to 44 | 12.1% | 10.4% | 12.9% |
| Age 45 to 54 | 7.8% | 9.3% | 12.6% |
| Age 55 to 59 | 4.3% | 5.7% | 6.7% |
| Age 60 to 64 | 4.6% | 7.1% | 6.3% |
| Age 65 to 74 | 10.4% | 11.9% | 9.6% |
| Age 75 to 84 | 7.5% | 11.1% | 4.5% |
| Age 85 and over | 6.7% | 7.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Freeman, SD | Britt, IA | United States |
| White | 76.5% | 88.7% | 59.4% |
| Black | 0.0% | 0.7% | 12.2% |
| Asian | 1.4% | 0.8% | 5.6% |
| Native American | 1.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 14.3% | 0.3% | 3.2% |
| Hispanic | 6.7% | 9.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Freeman, SD | Britt, IA | United States |
| Married Population | 56.8% | 53.3% | 49.8% |
| Currently Married | 55.3% | 50.9% | 48.0% |
| Married but Separated | 1.5% | 2.4% | 1.8% |
| Single Population | 43.2% | 46.7% | 50.2% |
| Never Married | 24.6% | 24.1% | 33.8% |
| Divorced | 8.4% | 11.4% | 10.8% |
| Widowed | 10.2% | 11.2% | 5.6% |
| space5 | | | |
| Household Size | 2.85 | 2.12 | 2.60 |
| Households | 583 | 870 | 124,010,992 |
| Family Households | 392 | 538 | 80,755,759 |
| Married couple, w/children | 30.1% | 23.6% | 30.5% |
| Married couple, no children | 50.8% | 51.1% | 42.9% |
| Non Family Households | 191 | 332 | 43,255,233 |
| Single householder, w/children | 11.7% | 18.8% | 15.8% |
| Single householder, no children | 7.4% | 6.5% | 10.8% |