| | Beresford, SD | Sheldon, IA | United States |
| Population | 2,359 | 5,475 | 329,725,481 |
| Female Population | 50.1% | 46.6% | 50.5% |
| Male Population | 49.9% | 53.4% | 49.5% |
| Median Age | 36.4 | 38.4 | 38.4 |
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| Population - 2010 | 2,010 | 5,201 | 309,327,143 |
| Population - 2000 | 2,006 | 4,914 | 285,036,114 |
| Population - 1990 | 1,849 | 4,937 | 251,960,433 |
| Pop. 2000 to Now | 1.8% | 3.2% | 15.6% |
| Pop. 1990 to Now | 10.5% | 2.7% | 30.8% |
| space4 | | | |
| Population Density | 1,322.3 | 1,174.9 | 93.4 |
| Land Area | 1.8 | 4.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Beresford, SD | Sheldon, IA | United States |
| Age 0 to 4 | 8.4% | 7.1% | 5.9% |
| Age 5 to 9 | 10.2% | 6.9% | 6.1% |
| Age 10 to 14 | 6.7% | 4.5% | 6.6% |
| Age 15 to 17 | 4.4% | 3.2% | 3.9% |
| Age 18 to 20 | 4.3% | 6.2% | 4.0% |
| Age 21 to 24 | 1.7% | 5.5% | 5.2% |
| Age 25 to 34 | 13.5% | 13.0% | 13.8% |
| Age 35 to 44 | 13.9% | 14.0% | 12.9% |
| Age 45 to 54 | 8.8% | 11.8% | 12.6% |
| Age 55 to 59 | 6.1% | 4.8% | 6.7% |
| Age 60 to 64 | 2.9% | 7.6% | 6.3% |
| Age 65 to 74 | 11.4% | 10.2% | 9.6% |
| Age 75 to 84 | 5.2% | 2.8% | 4.5% |
| Age 85 and over | 2.6% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Beresford, SD | Sheldon, IA | United States |
| White | 89.4% | 84.9% | 59.4% |
| Black | 0.0% | 2.4% | 12.2% |
| Asian | 0.0% | 1.1% | 5.6% |
| Native American | 0.8% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.0% | 0.4% |
| Two or More Races | 2.6% | 0.2% | 3.2% |
| Hispanic | 6.9% | 11.2% | 18.4% |
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| Marriage & Family | | | |
| | Beresford, SD | Sheldon, IA | United States |
| Married Population | 59.3% | 54.6% | 49.8% |
| Currently Married | 59.1% | 53.2% | 48.0% |
| Married but Separated | 0.2% | 1.4% | 1.8% |
| Single Population | 40.7% | 45.4% | 50.2% |
| Never Married | 28.3% | 33.9% | 33.8% |
| Divorced | 7.4% | 6.3% | 10.8% |
| Widowed | 5.0% | 5.2% | 5.6% |
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| Household Size | 2.55 | 2.52 | 2.60 |
| Households | 925 | 2,063 | 124,010,992 |
| Family Households | 614 | 1,313 | 80,755,759 |
| Married couple, w/children | 33.6% | 35.2% | 30.5% |
| Married couple, no children | 50.8% | 53.4% | 42.9% |
| Non Family Households | 311 | 750 | 43,255,233 |
| Single householder, w/children | 14.5% | 8.9% | 15.8% |
| Single householder, no children | 1.1% | 2.5% | 10.8% |