| | Siren, WI | Redgranite, WI | United States |
| Population | 835 | 2,123 | 329,725,481 |
| Female Population | 53.1% | 25.0% | 50.5% |
| Male Population | 47.0% | 75.0% | 49.5% |
| Median Age | 48.2 | 46.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 798 | 2,148 | 309,327,143 |
| Population - 2000 | 988 | 1,040 | 285,036,114 |
| Population - 1990 | 863 | 1,009 | 251,960,433 |
| Pop. 2000 to Now | -21.1% | 103.0% | 15.6% |
| Pop. 1990 to Now | -9.6% | 109.2% | 30.8% |
| space4 | | | |
| Population Density | 697.0 | 898.4 | 93.4 |
| Land Area | 1.2 | 2.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Siren, WI | Redgranite, WI | United States |
| Age 0 to 4 | 5.5% | 1.2% | 5.9% |
| Age 5 to 9 | 6.9% | 2.6% | 6.1% |
| Age 10 to 14 | 2.0% | 2.6% | 6.6% |
| Age 15 to 17 | 2.6% | 1.3% | 3.9% |
| Age 18 to 20 | 0.4% | 2.3% | 4.0% |
| Age 21 to 24 | 6.3% | 3.3% | 5.2% |
| Age 25 to 34 | 11.0% | 18.3% | 13.8% |
| Age 35 to 44 | 11.4% | 15.0% | 12.9% |
| Age 45 to 54 | 12.9% | 17.5% | 12.6% |
| Age 55 to 59 | 7.1% | 10.6% | 6.7% |
| Age 60 to 64 | 10.3% | 7.3% | 6.3% |
| Age 65 to 74 | 8.3% | 10.2% | 9.6% |
| Age 75 to 84 | 5.9% | 5.1% | 4.5% |
| Age 85 and over | 9.3% | 2.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Siren, WI | Redgranite, WI | United States |
| White | 92.5% | 70.1% | 59.4% |
| Black | 0.2% | 16.0% | 12.2% |
| Asian | 0.2% | 0.7% | 5.6% |
| Native American | 1.3% | 2.9% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 4.0% | 3.9% | 3.2% |
| Hispanic | 1.8% | 6.4% | 18.4% |
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| Marriage & Family | | | |
| | Siren, WI | Redgranite, WI | United States |
| Married Population | 37.1% | 26.4% | 49.8% |
| Currently Married | 34.9% | 22.4% | 48.0% |
| Married but Separated | 2.2% | 4.0% | 1.8% |
| Single Population | 62.9% | 73.6% | 50.2% |
| Never Married | 34.6% | 46.2% | 33.8% |
| Divorced | 14.3% | 21.3% | 10.8% |
| Widowed | 14.0% | 6.0% | 5.6% |
| space5 | | | |
| Household Size | 2.13 | 2.00 | 2.60 |
| Households | 388 | 549 | 124,010,992 |
| Family Households | 162 | 250 | 80,755,759 |
| Married couple, w/children | 19.1% | 22.8% | 30.5% |
| Married couple, no children | 50.6% | 51.6% | 42.9% |
| Non Family Households | 226 | 299 | 43,255,233 |
| Single householder, w/children | 19.1% | 8.8% | 15.8% |
| Single householder, no children | 11.1% | 16.8% | 10.8% |