| | Weston, WI | Arpin, WI | United States |
| Population | 15,609 | 341 | 329,725,481 |
| Female Population | 49.8% | 42.2% | 50.5% |
| Male Population | 50.2% | 57.8% | 49.5% |
| Median Age | 37.1 | 40.6 | 38.4 |
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| Population - 2010 | 14,919 | 333 | 309,327,143 |
| Population - 2000 | 12,079 | 337 | 285,036,114 |
| Population - 1990 | 9,714 | 312 | 251,960,433 |
| Pop. 2000 to Now | 25.6% | -9.5% | 15.6% |
| Pop. 1990 to Now | 56.1% | -2.2% | 30.8% |
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| Population Density | 722.0 | 414.8 | 93.4 |
| Land Area | 21.6 | 0.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Weston, WI | Arpin, WI | United States |
| Age 0 to 4 | 4.9% | 3.8% | 5.9% |
| Age 5 to 9 | 5.8% | 1.8% | 6.1% |
| Age 10 to 14 | 9.2% | 10.9% | 6.6% |
| Age 15 to 17 | 3.0% | 9.1% | 3.9% |
| Age 18 to 20 | 2.7% | 8.2% | 4.0% |
| Age 21 to 24 | 5.7% | 1.8% | 5.2% |
| Age 25 to 34 | 15.2% | 7.3% | 13.8% |
| Age 35 to 44 | 11.0% | 12.3% | 12.9% |
| Age 45 to 54 | 13.4% | 18.2% | 12.6% |
| Age 55 to 59 | 8.1% | 5.6% | 6.7% |
| Age 60 to 64 | 5.8% | 6.2% | 6.3% |
| Age 65 to 74 | 8.5% | 10.3% | 9.6% |
| Age 75 to 84 | 3.7% | 2.9% | 4.5% |
| Age 85 and over | 3.0% | 1.8% | 1.9% |
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| Race | | | |
| | Weston, WI | Arpin, WI | United States |
| White | 85.2% | 83.0% | 59.4% |
| Black | 2.4% | 1.5% | 12.2% |
| Asian | 9.0% | 0.3% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.0% | 2.6% | 3.2% |
| Hispanic | 1.4% | 12.3% | 18.4% |
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| Marriage & Family | | | |
| | Weston, WI | Arpin, WI | United States |
| Married Population | 52.9% | 37.5% | 49.8% |
| Currently Married | 52.7% | 37.2% | 48.0% |
| Married but Separated | 0.3% | 0.4% | 1.8% |
| Single Population | 47.1% | 62.5% | 50.2% |
| Never Married | 27.7% | 30.5% | 33.8% |
| Divorced | 14.3% | 23.2% | 10.8% |
| Widowed | 5.1% | 8.8% | 5.6% |
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| Household Size | 2.43 | 2.69 | 2.60 |
| Households | 6,372 | 124 | 124,010,992 |
| Family Households | 4,201 | 72 | 80,755,759 |
| Married couple, w/children | 28.7% | 23.6% | 30.5% |
| Married couple, no children | 48.2% | 43.1% | 42.9% |
| Non Family Households | 2,171 | 52 | 43,255,233 |
| Single householder, w/children | 16.3% | 16.7% | 15.8% |
| Single householder, no children | 6.8% | 16.7% | 10.8% |