| | Menomonie, WI | Colstrip, MT | United States |
| Population | 16,721 | 2,094 | 329,725,481 |
| Female Population | 50.4% | 48.0% | 50.5% |
| Male Population | 49.6% | 52.0% | 49.5% |
| Median Age | 23.9 | 47.6 | 38.4 |
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| Population - 2010 | 16,268 | 2,225 | 309,327,143 |
| Population - 2000 | 14,937 | 2,346 | 285,036,114 |
| Population - 1990 | 13,547 | 3,035 | 251,960,433 |
| Pop. 2000 to Now | 11.1% | -5.5% | 15.6% |
| Pop. 1990 to Now | 22.5% | -27.0% | 30.8% |
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| Population Density | 1,222.0 | 517.6 | 93.4 |
| Land Area | 13.7 | 4.0 | 3,531,905.4 |
| Water Area | 1.7 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Menomonie, WI | Colstrip, MT | United States |
| Age 0 to 4 | 2.9% | 1.6% | 5.9% |
| Age 5 to 9 | 4.4% | 5.8% | 6.1% |
| Age 10 to 14 | 2.9% | 9.3% | 6.6% |
| Age 15 to 17 | 1.9% | 4.8% | 3.9% |
| Age 18 to 20 | 21.1% | 1.9% | 4.0% |
| Age 21 to 24 | 18.9% | 3.0% | 5.2% |
| Age 25 to 34 | 10.1% | 4.9% | 13.8% |
| Age 35 to 44 | 8.4% | 12.7% | 12.9% |
| Age 45 to 54 | 8.1% | 18.2% | 12.6% |
| Age 55 to 59 | 4.4% | 11.1% | 6.7% |
| Age 60 to 64 | 3.8% | 18.8% | 6.3% |
| Age 65 to 74 | 7.0% | 5.3% | 9.6% |
| Age 75 to 84 | 3.4% | 2.0% | 4.5% |
| Age 85 and over | 2.7% | 0.5% | 1.9% |
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| Race | | | |
| | Menomonie, WI | Colstrip, MT | United States |
| White | 92.3% | 76.1% | 59.4% |
| Black | 1.1% | 0.0% | 12.2% |
| Asian | 2.2% | 2.1% | 5.6% |
| Native American | 0.1% | 5.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.9% | 5.5% | 3.2% |
| Hispanic | 2.4% | 11.0% | 18.4% |
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| Marriage & Family | | | |
| | Menomonie, WI | Colstrip, MT | United States |
| Married Population | 25.7% | 59.5% | 49.8% |
| Currently Married | 25.1% | 59.5% | 48.0% |
| Married but Separated | 0.6% | 0.0% | 1.8% |
| Single Population | 74.3% | 40.5% | 50.2% |
| Never Married | 57.3% | 17.2% | 33.8% |
| Divorced | 11.6% | 11.8% | 10.8% |
| Widowed | 5.4% | 11.5% | 5.6% |
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| Household Size | 2.15 | 2.29 | 2.60 |
| Households | 6,110 | 913 | 124,010,992 |
| Family Households | 2,457 | 526 | 80,755,759 |
| Married couple, w/children | 29.1% | 44.7% | 30.5% |
| Married couple, no children | 42.4% | 51.5% | 42.9% |
| Non Family Households | 3,653 | 387 | 43,255,233 |
| Single householder, w/children | 14.7% | 3.8% | 15.8% |
| Single householder, no children | 13.7% | 0.0% | 10.8% |