| | Osborn, WI | Cedar Grove, WI | United States |
| Population | 1,082 | 2,164 | 329,725,481 |
| Female Population | 46.1% | 46.2% | 50.5% |
| Male Population | 53.9% | 53.8% | 49.5% |
| Median Age | 39.5 | 43 | 38.4 |
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| Population - 2010 | 1,178 | 2,113 | 309,327,143 |
| Population - 2000 | 1,029 | 1,887 | 285,036,114 |
| Population - 1990 | 784 | 1,521 | 251,960,433 |
| Pop. 2000 to Now | 22.7% | 12.1% | 15.6% |
| Pop. 1990 to Now | 61.1% | 39.1% | 30.8% |
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| Population Density | 64.1 | 990.8 | 93.4 |
| Land Area | 16.9 | 2.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Osborn, WI | Cedar Grove, WI | United States |
| Age 0 to 4 | 4.6% | 3.3% | 5.9% |
| Age 5 to 9 | 7.3% | 9.9% | 6.1% |
| Age 10 to 14 | 7.3% | 5.5% | 6.6% |
| Age 15 to 17 | 3.1% | 1.9% | 3.9% |
| Age 18 to 20 | 3.3% | 3.1% | 4.0% |
| Age 21 to 24 | 8.3% | 7.3% | 5.2% |
| Age 25 to 34 | 6.9% | 7.7% | 13.8% |
| Age 35 to 44 | 15.9% | 13.9% | 12.9% |
| Age 45 to 54 | 17.3% | 13.5% | 12.6% |
| Age 55 to 59 | 6.4% | 7.6% | 6.7% |
| Age 60 to 64 | 7.1% | 7.7% | 6.3% |
| Age 65 to 74 | 9.0% | 9.1% | 9.6% |
| Age 75 to 84 | 3.0% | 5.3% | 4.5% |
| Age 85 and over | 0.6% | 4.1% | 1.9% |
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| Race | | | |
| | Osborn, WI | Cedar Grove, WI | United States |
| White | 96.1% | 88.9% | 59.4% |
| Black | 0.0% | 0.5% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 2.3% | 0.0% | 0.4% |
| Two or More Races | 1.4% | 2.4% | 3.2% |
| Hispanic | 0.0% | 8.2% | 18.4% |
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| Marriage & Family | | | |
| | Osborn, WI | Cedar Grove, WI | United States |
| Married Population | 68.2% | 68.1% | 49.8% |
| Currently Married | 68.2% | 67.0% | 48.0% |
| Married but Separated | 0.0% | 1.1% | 1.8% |
| Single Population | 31.8% | 31.9% | 50.2% |
| Never Married | 26.2% | 18.9% | 33.8% |
| Divorced | 4.2% | 6.2% | 10.8% |
| Widowed | 1.4% | 6.8% | 5.6% |
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| Household Size | 2.83 | 2.52 | 2.60 |
| Households | 382 | 858 | 124,010,992 |
| Family Households | 320 | 557 | 80,755,759 |
| Married couple, w/children | 32.5% | 29.4% | 30.5% |
| Married couple, no children | 60.6% | 65.5% | 42.9% |
| Non Family Households | 62 | 301 | 43,255,233 |
| Single householder, w/children | 3.4% | 3.1% | 15.8% |
| Single householder, no children | 3.4% | 2.0% | 10.8% |