| | Genoa City, WI | Galesburg, IL | United States |
| Population | 3,016 | 30,298 | 329,725,481 |
| Female Population | 45.7% | 48.2% | 50.5% |
| Male Population | 54.3% | 51.8% | 49.5% |
| Median Age | 34.2 | 41.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,052 | 32,178 | 309,327,143 |
| Population - 2000 | 1,949 | 33,706 | 285,036,114 |
| Population - 1990 | 1,277 | 33,530 | 251,960,433 |
| Pop. 2000 to Now | 53.0% | -11.6% | 15.6% |
| Pop. 1990 to Now | 133.4% | -11.1% | 30.8% |
| space4 | | | |
| Population Density | 1,144.6 | 1,707.6 | 93.4 |
| Land Area | 2.6 | 17.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Genoa City, WI | Galesburg, IL | United States |
| Age 0 to 4 | 4.4% | 5.1% | 5.9% |
| Age 5 to 9 | 10.4% | 4.5% | 6.1% |
| Age 10 to 14 | 10.7% | 4.7% | 6.6% |
| Age 15 to 17 | 1.8% | 2.9% | 3.9% |
| Age 18 to 20 | 1.8% | 7.0% | 4.0% |
| Age 21 to 24 | 4.9% | 6.2% | 5.2% |
| Age 25 to 34 | 16.4% | 11.9% | 13.8% |
| Age 35 to 44 | 14.0% | 11.3% | 12.9% |
| Age 45 to 54 | 12.9% | 11.4% | 12.6% |
| Age 55 to 59 | 8.5% | 6.1% | 6.7% |
| Age 60 to 64 | 5.0% | 7.5% | 6.3% |
| Age 65 to 74 | 6.4% | 11.6% | 9.6% |
| Age 75 to 84 | 2.5% | 6.8% | 4.5% |
| Age 85 and over | 0.3% | 2.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Genoa City, WI | Galesburg, IL | United States |
| White | 81.3% | 73.9% | 59.4% |
| Black | 0.0% | 13.4% | 12.2% |
| Asian | 1.0% | 1.6% | 5.6% |
| Native American | 0.5% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 3.8% | 2.6% | 3.2% |
| Hispanic | 13.4% | 7.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Genoa City, WI | Galesburg, IL | United States |
| Married Population | 60.9% | 36.9% | 49.8% |
| Currently Married | 58.0% | 35.5% | 48.0% |
| Married but Separated | 2.9% | 1.4% | 1.8% |
| Single Population | 39.1% | 63.1% | 50.2% |
| Never Married | 25.6% | 41.4% | 33.8% |
| Divorced | 10.4% | 13.9% | 10.8% |
| Widowed | 3.2% | 7.8% | 5.6% |
| space5 | | | |
| Household Size | 2.55 | 2.08 | 2.60 |
| Households | 1,184 | 12,558 | 124,010,992 |
| Family Households | 869 | 6,171 | 80,755,759 |
| Married couple, w/children | 34.1% | 23.2% | 30.5% |
| Married couple, no children | 41.1% | 46.6% | 42.9% |
| Non Family Households | 315 | 6,387 | 43,255,233 |
| Single householder, w/children | 14.4% | 18.4% | 15.8% |
| Single householder, no children | 10.5% | 11.7% | 10.8% |