| | Westbrook township, MN | Windom, MN | United States |
| Population | 219 | 4,748 | 329,725,481 |
| Female Population | 39.7% | 48.9% | 50.5% |
| Male Population | 60.3% | 51.1% | 49.5% |
| Median Age | 48.3 | 39.1 | 38.4 |
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| Population - 2010 | 215 | 4,643 | 309,327,143 |
| Population - 2000 | 302 | 4,490 | 285,036,114 |
| Population - 1990 | 278 | 4,283 | 251,960,433 |
| Pop. 2000 to Now | -31.1% | -1.9% | 15.6% |
| Pop. 1990 to Now | -25.2% | 2.8% | 30.8% |
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| Population Density | 6.3 | 1,172.6 | 93.4 |
| Land Area | 34.8 | 4.0 | 3,531,905.4 |
| Water Area | 0.6 | 0.2 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Westbrook township, MN | Windom, MN | United States |
| Age 0 to 4 | 11.0% | 5.8% | 5.9% |
| Age 5 to 9 | 8.7% | 7.5% | 6.1% |
| Age 10 to 14 | 4.6% | 6.5% | 6.6% |
| Age 15 to 17 | 4.1% | 4.1% | 3.9% |
| Age 18 to 20 | 2.3% | 3.0% | 4.0% |
| Age 21 to 24 | 0.0% | 3.7% | 5.2% |
| Age 25 to 34 | 6.4% | 14.5% | 13.8% |
| Age 35 to 44 | 10.5% | 9.6% | 12.9% |
| Age 45 to 54 | 12.3% | 8.3% | 12.6% |
| Age 55 to 59 | 6.8% | 7.3% | 6.7% |
| Age 60 to 64 | 10.0% | 6.7% | 6.3% |
| Age 65 to 74 | 11.4% | 10.3% | 9.6% |
| Age 75 to 84 | 4.1% | 8.0% | 4.5% |
| Age 85 and over | 7.8% | 4.7% | 1.9% |
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| Race | | | |
| | Westbrook township, MN | Windom, MN | United States |
| White | 96.3% | 79.8% | 59.4% |
| Black | 0.0% | 3.2% | 12.2% |
| Asian | 0.0% | 0.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 1.4% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.7% | 1.2% | 3.2% |
| Hispanic | 0.0% | 14.4% | 18.4% |
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| Marriage & Family | | | |
| | Westbrook township, MN | Windom, MN | United States |
| Married Population | 71.1% | 52.9% | 49.8% |
| Currently Married | 71.1% | 51.7% | 48.0% |
| Married but Separated | 0.0% | 1.2% | 1.8% |
| Single Population | 28.9% | 47.1% | 50.2% |
| Never Married | 15.1% | 24.0% | 33.8% |
| Divorced | 4.2% | 14.4% | 10.8% |
| Widowed | 9.6% | 8.7% | 5.6% |
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| Household Size | 2.49 | 2.33 | 2.60 |
| Households | 88 | 1,960 | 124,010,992 |
| Family Households | 54 | 1,217 | 80,755,759 |
| Married couple, w/children | 48.1% | 32.5% | 30.5% |
| Married couple, no children | 50.0% | 44.8% | 42.9% |
| Non Family Households | 34 | 743 | 43,255,233 |
| Single householder, w/children | 1.9% | 14.5% | 15.8% |
| Single householder, no children | 0.0% | 8.3% | 10.8% |