| | Cooperstown, ND | Mapleton, ND | United States |
| Population | 874 | 1,169 | 329,725,481 |
| Female Population | 54.4% | 47.8% | 50.5% |
| Male Population | 45.7% | 52.2% | 49.5% |
| Median Age | 49.8 | 32.4 | 38.4 |
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| Population - 2010 | 983 | 767 | 309,327,143 |
| Population - 2000 | 1,053 | 606 | 285,036,114 |
| Population - 1990 | 1,247 | 682 | 251,960,433 |
| Pop. 2000 to Now | -15.4% | 111.6% | 15.6% |
| Pop. 1990 to Now | -28.6% | 88.0% | 30.8% |
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| Population Density | 894.6 | 298.9 | 93.4 |
| Land Area | 1.0 | 3.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Cooperstown, ND | Mapleton, ND | United States |
| Age 0 to 4 | 5.7% | 12.0% | 5.9% |
| Age 5 to 9 | 4.8% | 9.2% | 6.1% |
| Age 10 to 14 | 6.2% | 6.0% | 6.6% |
| Age 15 to 17 | 5.0% | 3.5% | 3.9% |
| Age 18 to 20 | 0.8% | 0.7% | 4.0% |
| Age 21 to 24 | 3.2% | 5.1% | 5.2% |
| Age 25 to 34 | 10.3% | 22.2% | 13.8% |
| Age 35 to 44 | 7.8% | 16.9% | 12.9% |
| Age 45 to 54 | 11.9% | 8.4% | 12.6% |
| Age 55 to 59 | 4.1% | 5.9% | 6.7% |
| Age 60 to 64 | 7.7% | 4.1% | 6.3% |
| Age 65 to 74 | 13.4% | 4.7% | 9.6% |
| Age 75 to 84 | 10.5% | 1.0% | 4.5% |
| Age 85 and over | 8.6% | 0.3% | 1.9% |
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| Race | | | |
| | Cooperstown, ND | Mapleton, ND | United States |
| White | 95.4% | 85.3% | 59.4% |
| Black | 0.0% | 1.1% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 2.3% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.3% | 4.4% | 3.2% |
| Hispanic | 0.0% | 8.8% | 18.4% |
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| Marriage & Family | | | |
| | Cooperstown, ND | Mapleton, ND | United States |
| Married Population | 47.9% | 71.1% | 49.8% |
| Currently Married | 47.5% | 69.6% | 48.0% |
| Married but Separated | 0.4% | 1.5% | 1.8% |
| Single Population | 52.1% | 28.9% | 50.2% |
| Never Married | 24.0% | 21.9% | 33.8% |
| Divorced | 12.1% | 6.0% | 10.8% |
| Widowed | 15.9% | 1.1% | 5.6% |
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| Household Size | 2.19 | 2.98 | 2.60 |
| Households | 361 | 392 | 124,010,992 |
| Family Households | 193 | 344 | 80,755,759 |
| Married couple, w/children | 31.1% | 49.7% | 30.5% |
| Married couple, no children | 52.9% | 36.0% | 42.9% |
| Non Family Households | 168 | 48 | 43,255,233 |
| Single householder, w/children | 9.8% | 6.7% | 15.8% |
| Single householder, no children | 6.2% | 7.6% | 10.8% |