| | Champlin, MN | West Fargo, ND | United States |
| Population | 23,877 | 37,913 | 329,725,481 |
| Female Population | 50.6% | 49.1% | 50.5% |
| Male Population | 49.4% | 50.9% | 49.5% |
| Median Age | 41 | 34.2 | 38.4 |
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| Population - 2010 | 23,145 | 25,962 | 309,327,143 |
| Population - 2000 | 22,193 | 14,940 | 285,036,114 |
| Population - 1990 | 16,849 | 12,287 | 251,960,433 |
| Pop. 2000 to Now | 12.9% | 155.7% | 15.6% |
| Pop. 1990 to Now | 48.7% | 210.9% | 30.8% |
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| Population Density | 2,929.3 | 2,371.5 | 93.4 |
| Land Area | 8.2 | 16.0 | 3,531,905.4 |
| Water Area | 0.6 | 0.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Champlin, MN | West Fargo, ND | United States |
| Age 0 to 4 | 4.9% | 7.9% | 5.9% |
| Age 5 to 9 | 8.8% | 7.5% | 6.1% |
| Age 10 to 14 | 7.2% | 8.2% | 6.6% |
| Age 15 to 17 | 3.4% | 3.6% | 3.9% |
| Age 18 to 20 | 1.9% | 2.8% | 4.0% |
| Age 21 to 24 | 4.4% | 6.0% | 5.2% |
| Age 25 to 34 | 11.1% | 16.1% | 13.8% |
| Age 35 to 44 | 12.8% | 15.9% | 12.9% |
| Age 45 to 54 | 14.4% | 12.0% | 12.6% |
| Age 55 to 59 | 9.7% | 5.7% | 6.7% |
| Age 60 to 64 | 7.9% | 4.2% | 6.3% |
| Age 65 to 74 | 9.5% | 6.6% | 9.6% |
| Age 75 to 84 | 3.3% | 2.6% | 4.5% |
| Age 85 and over | 0.8% | 1.0% | 1.9% |
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| Race | | | |
| | Champlin, MN | West Fargo, ND | United States |
| White | 82.5% | 87.7% | 59.4% |
| Black | 9.2% | 2.8% | 12.2% |
| Asian | 3.2% | 2.3% | 5.6% |
| Native American | 0.2% | 0.9% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.1% | 0.4% |
| Two or More Races | 3.2% | 4.0% | 3.2% |
| Hispanic | 1.5% | 2.2% | 18.4% |
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| Marriage & Family | | | |
| | Champlin, MN | West Fargo, ND | United States |
| Married Population | 58.1% | 59.4% | 49.8% |
| Currently Married | 57.6% | 59.2% | 48.0% |
| Married but Separated | 0.5% | 0.2% | 1.8% |
| Single Population | 41.9% | 40.6% | 50.2% |
| Never Married | 25.4% | 29.0% | 33.8% |
| Divorced | 13.2% | 8.3% | 10.8% |
| Widowed | 3.3% | 3.3% | 5.6% |
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| Household Size | 2.73 | 2.55 | 2.60 |
| Households | 8,725 | 14,810 | 124,010,992 |
| Family Households | 6,458 | 10,164 | 80,755,759 |
| Married couple, w/children | 32.1% | 38.3% | 30.5% |
| Married couple, no children | 49.1% | 43.5% | 42.9% |
| Non Family Households | 2,267 | 4,646 | 43,255,233 |
| Single householder, w/children | 14.4% | 11.5% | 15.8% |
| Single householder, no children | 4.4% | 6.7% | 10.8% |