| | Ellendale, ND | Ashley, ND | United States |
| Population | 1,067 | 613 | 329,725,481 |
| Female Population | 52.8% | 55.1% | 50.5% |
| Male Population | 47.2% | 44.9% | 49.5% |
| Median Age | 40.2 | 59.6 | 38.4 |
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| Population - 2010 | 1,388 | 746 | 309,327,143 |
| Population - 2000 | 1,559 | 882 | 285,036,114 |
| Population - 1990 | 1,798 | 1,052 | 251,960,433 |
| Pop. 2000 to Now | -24.4% | -26.9% | 15.6% |
| Pop. 1990 to Now | -34.4% | -38.7% | 30.8% |
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| Population Density | 753.0 | 953.3 | 93.4 |
| Land Area | 1.4 | 0.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Ellendale, ND | Ashley, ND | United States |
| Age 0 to 4 | 4.8% | 3.3% | 5.9% |
| Age 5 to 9 | 5.5% | 3.1% | 6.1% |
| Age 10 to 14 | 4.8% | 3.1% | 6.6% |
| Age 15 to 17 | 3.9% | 0.7% | 3.9% |
| Age 18 to 20 | 11.0% | 2.0% | 4.0% |
| Age 21 to 24 | 6.7% | 1.0% | 5.2% |
| Age 25 to 34 | 7.9% | 12.7% | 13.8% |
| Age 35 to 44 | 10.6% | 11.6% | 12.9% |
| Age 45 to 54 | 5.9% | 7.0% | 12.6% |
| Age 55 to 59 | 7.9% | 6.0% | 6.7% |
| Age 60 to 64 | 6.6% | 4.6% | 6.3% |
| Age 65 to 74 | 8.6% | 17.9% | 9.6% |
| Age 75 to 84 | 8.0% | 16.6% | 4.5% |
| Age 85 and over | 7.9% | 10.4% | 1.9% |
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| Race | | | |
| | Ellendale, ND | Ashley, ND | United States |
| White | 88.9% | 92.8% | 59.4% |
| Black | 1.5% | 0.0% | 12.2% |
| Asian | 0.0% | 2.6% | 5.6% |
| Native American | 5.0% | 0.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.9% | 2.9% | 3.2% |
| Hispanic | 2.7% | 0.8% | 18.4% |
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| Marriage & Family | | | |
| | Ellendale, ND | Ashley, ND | United States |
| Married Population | 40.6% | 52.3% | 49.8% |
| Currently Married | 40.6% | 52.3% | 48.0% |
| Married but Separated | 0.0% | 0.0% | 1.8% |
| Single Population | 59.4% | 47.7% | 50.2% |
| Never Married | 39.2% | 19.5% | 33.8% |
| Divorced | 6.1% | 6.5% | 10.8% |
| Widowed | 14.1% | 21.8% | 5.6% |
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| Household Size | 2.23 | 1.62 | 2.60 |
| Households | 417 | 355 | 124,010,992 |
| Family Households | 220 | 167 | 80,755,759 |
| Married couple, w/children | 33.2% | 11.4% | 30.5% |
| Married couple, no children | 52.7% | 72.5% | 42.9% |
| Non Family Households | 197 | 188 | 43,255,233 |
| Single householder, w/children | 2.7% | 5.4% | 15.8% |
| Single householder, no children | 11.4% | 10.8% | 10.8% |