| | Grand Forks, ND | Vermillion, SD | United States |
| Population | 58,867 | 11,506 | 329,725,481 |
| Female Population | 48.1% | 51.1% | 50.5% |
| Male Population | 51.9% | 48.9% | 49.5% |
| Median Age | 29.4 | 23 | 38.4 |
| space3 | | | |
| Population - 2010 | 53,042 | 10,554 | 309,327,143 |
| Population - 2000 | 49,321 | 9,765 | 285,036,114 |
| Population - 1990 | 49,425 | 10,034 | 251,960,433 |
| Pop. 2000 to Now | 13.4% | 13.0% | 15.6% |
| Pop. 1990 to Now | 13.2% | 10.0% | 30.8% |
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| Population Density | 2,161.5 | 2,519.4 | 93.4 |
| Land Area | 27.2 | 4.6 | 3,531,905.4 |
| Water Area | 0.2 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Grand Forks, ND | Vermillion, SD | United States |
| Age 0 to 4 | 6.3% | 5.3% | 5.9% |
| Age 5 to 9 | 5.0% | 4.1% | 6.1% |
| Age 10 to 14 | 5.8% | 5.6% | 6.6% |
| Age 15 to 17 | 3.2% | 1.7% | 3.9% |
| Age 18 to 20 | 9.0% | 23.2% | 4.0% |
| Age 21 to 24 | 12.0% | 16.9% | 5.2% |
| Age 25 to 34 | 17.4% | 12.8% | 13.8% |
| Age 35 to 44 | 10.5% | 8.1% | 12.9% |
| Age 45 to 54 | 8.4% | 5.6% | 12.6% |
| Age 55 to 59 | 5.3% | 1.8% | 6.7% |
| Age 60 to 64 | 4.6% | 5.7% | 6.3% |
| Age 65 to 74 | 7.5% | 5.9% | 9.6% |
| Age 75 to 84 | 3.3% | 1.7% | 4.5% |
| Age 85 and over | 1.8% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Grand Forks, ND | Vermillion, SD | United States |
| White | 81.3% | 83.8% | 59.4% |
| Black | 4.3% | 2.0% | 12.2% |
| Asian | 3.4% | 3.6% | 5.6% |
| Native American | 2.6% | 4.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.6% | 0.0% | 0.2% |
| Other | 0.4% | 0.5% | 0.4% |
| Two or More Races | 2.9% | 2.3% | 3.2% |
| Hispanic | 4.5% | 3.6% | 18.4% |
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| Marriage & Family | | | |
| | Grand Forks, ND | Vermillion, SD | United States |
| Married Population | 37.7% | 30.2% | 49.8% |
| Currently Married | 36.7% | 30.2% | 48.0% |
| Married but Separated | 0.9% | 0.0% | 1.8% |
| Single Population | 62.3% | 69.8% | 50.2% |
| Never Married | 46.9% | 61.2% | 33.8% |
| Divorced | 10.6% | 5.4% | 10.8% |
| Widowed | 4.8% | 3.2% | 5.6% |
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| Household Size | 2.15 | 2.31 | 2.60 |
| Households | 25,735 | 3,964 | 124,010,992 |
| Family Households | 11,823 | 1,734 | 80,755,759 |
| Married couple, w/children | 32.7% | 28.8% | 30.5% |
| Married couple, no children | 38.6% | 52.9% | 42.9% |
| Non Family Households | 13,912 | 2,230 | 43,255,233 |
| Single householder, w/children | 21.3% | 15.4% | 15.8% |
| Single householder, no children | 7.4% | 2.9% | 10.8% |