| | Harmony, MN | Viroqua, WI | United States |
| Population | 989 | 4,429 | 329,725,481 |
| Female Population | 53.2% | 49.9% | 50.5% |
| Male Population | 46.8% | 50.1% | 49.5% |
| Median Age | 57.3 | 47.5 | 38.4 |
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| Population - 2010 | 1,019 | 4,353 | 309,327,143 |
| Population - 2000 | 1,080 | 4,335 | 285,036,114 |
| Population - 1990 | 1,081 | 3,922 | 251,960,433 |
| Pop. 2000 to Now | -9.1% | 1.4% | 15.6% |
| Pop. 1990 to Now | -9.2% | 12.0% | 30.8% |
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| Population Density | 887.0 | 1,126.7 | 93.4 |
| Land Area | 1.1 | 3.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Harmony, MN | Viroqua, WI | United States |
| Age 0 to 4 | 2.7% | 4.1% | 5.9% |
| Age 5 to 9 | 4.8% | 5.0% | 6.1% |
| Age 10 to 14 | 7.3% | 8.5% | 6.6% |
| Age 15 to 17 | 2.1% | 4.2% | 3.9% |
| Age 18 to 20 | 0.3% | 2.2% | 4.0% |
| Age 21 to 24 | 2.2% | 2.3% | 5.2% |
| Age 25 to 34 | 10.0% | 10.1% | 13.8% |
| Age 35 to 44 | 6.4% | 11.8% | 12.9% |
| Age 45 to 54 | 12.2% | 14.2% | 12.6% |
| Age 55 to 59 | 6.7% | 8.2% | 6.7% |
| Age 60 to 64 | 6.6% | 6.8% | 6.3% |
| Age 65 to 74 | 17.6% | 9.2% | 9.6% |
| Age 75 to 84 | 10.0% | 8.1% | 4.5% |
| Age 85 and over | 11.1% | 5.2% | 1.9% |
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| Race | | | |
| | Harmony, MN | Viroqua, WI | United States |
| White | 96.9% | 90.2% | 59.4% |
| Black | 1.3% | 0.4% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.2% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.2% | 5.8% | 3.2% |
| Hispanic | 0.4% | 3.0% | 18.4% |
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| Marriage & Family | | | |
| | Harmony, MN | Viroqua, WI | United States |
| Married Population | 49.2% | 43.8% | 49.8% |
| Currently Married | 49.2% | 41.9% | 48.0% |
| Married but Separated | 0.0% | 1.9% | 1.8% |
| Single Population | 50.8% | 56.2% | 50.2% |
| Never Married | 21.6% | 25.1% | 33.8% |
| Divorced | 12.7% | 19.2% | 10.8% |
| Widowed | 16.5% | 11.8% | 5.6% |
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| Household Size | 1.87 | 2.11 | 2.60 |
| Households | 500 | 1,983 | 124,010,992 |
| Family Households | 252 | 1,073 | 80,755,759 |
| Married couple, w/children | 19.4% | 27.9% | 30.5% |
| Married couple, no children | 60.3% | 41.2% | 42.9% |
| Non Family Households | 248 | 910 | 43,255,233 |
| Single householder, w/children | 15.5% | 20.7% | 15.8% |
| Single householder, no children | 4.8% | 10.3% | 10.8% |