| | Nashotah, WI | Delafield, WI | United States |
| Population | 1,133 | 7,172 | 329,725,481 |
| Female Population | 51.6% | 53.3% | 50.5% |
| Male Population | 48.5% | 46.7% | 49.5% |
| Median Age | 47.4 | 47.4 | 38.4 |
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| Population - 2010 | 1,371 | 7,102 | 309,327,143 |
| Population - 2000 | 1,266 | 6,472 | 285,036,114 |
| Population - 1990 | 567 | 5,347 | 251,960,433 |
| Pop. 2000 to Now | 7.5% | 16.8% | 15.6% |
| Pop. 1990 to Now | 140.0% | 41.4% | 30.8% |
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| Population Density | 693.0 | 763.1 | 93.4 |
| Land Area | 1.6 | 9.4 | 3,531,905.4 |
| Water Area | 0.0 | 1.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Nashotah, WI | Delafield, WI | United States |
| Age 0 to 4 | 5.7% | 5.2% | 5.9% |
| Age 5 to 9 | 4.8% | 7.7% | 6.1% |
| Age 10 to 14 | 5.1% | 5.2% | 6.6% |
| Age 15 to 17 | 3.1% | 2.1% | 3.9% |
| Age 18 to 20 | 5.6% | 2.3% | 4.0% |
| Age 21 to 24 | 3.6% | 5.8% | 5.2% |
| Age 25 to 34 | 6.5% | 8.5% | 13.8% |
| Age 35 to 44 | 12.6% | 11.2% | 12.9% |
| Age 45 to 54 | 15.6% | 11.2% | 12.6% |
| Age 55 to 59 | 13.7% | 8.1% | 6.7% |
| Age 60 to 64 | 7.9% | 9.3% | 6.3% |
| Age 65 to 74 | 9.4% | 14.3% | 9.6% |
| Age 75 to 84 | 4.4% | 7.3% | 4.5% |
| Age 85 and over | 1.9% | 1.8% | 1.9% |
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| Race | | | |
| | Nashotah, WI | Delafield, WI | United States |
| White | 91.5% | 91.9% | 59.4% |
| Black | 0.6% | 2.3% | 12.2% |
| Asian | 2.0% | 1.9% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.7% | 0.1% | 0.4% |
| Two or More Races | 2.8% | 1.8% | 3.2% |
| Hispanic | 2.3% | 2.1% | 18.4% |
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| Marriage & Family | | | |
| | Nashotah, WI | Delafield, WI | United States |
| Married Population | 62.8% | 56.4% | 49.8% |
| Currently Married | 62.4% | 56.2% | 48.0% |
| Married but Separated | 0.3% | 0.2% | 1.8% |
| Single Population | 37.2% | 43.6% | 50.2% |
| Never Married | 24.0% | 25.4% | 33.8% |
| Divorced | 7.4% | 13.5% | 10.8% |
| Widowed | 5.9% | 4.7% | 5.6% |
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| Household Size | 2.59 | 2.18 | 2.60 |
| Households | 438 | 3,210 | 124,010,992 |
| Family Households | 309 | 1,998 | 80,755,759 |
| Married couple, w/children | 30.4% | 26.9% | 30.5% |
| Married couple, no children | 63.1% | 53.1% | 42.9% |
| Non Family Households | 129 | 1,212 | 43,255,233 |
| Single householder, w/children | 3.9% | 13.4% | 15.8% |
| Single householder, no children | 2.6% | 6.7% | 10.8% |