| | Angola, IN | Galena, IL | United States |
| Population | 8,916 | 3,212 | 329,725,481 |
| Female Population | 48.1% | 53.6% | 50.5% |
| Male Population | 51.9% | 46.5% | 49.5% |
| Median Age | 32.1 | 56.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 8,589 | 3,409 | 309,327,143 |
| Population - 2000 | 7,344 | 3,460 | 285,036,114 |
| Population - 1990 | 5,824 | 3,647 | 251,960,433 |
| Pop. 2000 to Now | 20.2% | -8.9% | 15.6% |
| Pop. 1990 to Now | 51.6% | -13.6% | 30.8% |
| space4 | | | |
| Population Density | 1,373.4 | 720.2 | 93.4 |
| Land Area | 6.5 | 4.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Angola, IN | Galena, IL | United States |
| Age 0 to 4 | 5.6% | 2.4% | 5.9% |
| Age 5 to 9 | 6.4% | 3.9% | 6.1% |
| Age 10 to 14 | 4.0% | 4.8% | 6.6% |
| Age 15 to 17 | 4.9% | 4.0% | 3.9% |
| Age 18 to 20 | 10.5% | 1.5% | 4.0% |
| Age 21 to 24 | 8.3% | 3.2% | 5.2% |
| Age 25 to 34 | 14.6% | 5.4% | 13.8% |
| Age 35 to 44 | 8.4% | 15.3% | 12.9% |
| Age 45 to 54 | 10.7% | 7.6% | 12.6% |
| Age 55 to 59 | 5.4% | 7.7% | 6.7% |
| Age 60 to 64 | 3.8% | 10.8% | 6.3% |
| Age 65 to 74 | 9.2% | 19.7% | 9.6% |
| Age 75 to 84 | 4.1% | 6.4% | 4.5% |
| Age 85 and over | 4.1% | 7.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Angola, IN | Galena, IL | United States |
| White | 90.3% | 87.6% | 59.4% |
| Black | 0.9% | 0.5% | 12.2% |
| Asian | 1.0% | 0.3% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.5% | 0.0% | 3.2% |
| Hispanic | 5.3% | 11.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Angola, IN | Galena, IL | United States |
| Married Population | 37.6% | 51.1% | 49.8% |
| Currently Married | 36.6% | 51.1% | 48.0% |
| Married but Separated | 1.0% | 0.0% | 1.8% |
| Single Population | 62.4% | 48.9% | 50.2% |
| Never Married | 42.1% | 23.8% | 33.8% |
| Divorced | 11.7% | 11.8% | 10.8% |
| Widowed | 8.6% | 13.3% | 5.6% |
| space5 | | | |
| Household Size | 2.33 | 1.85 | 2.60 |
| Households | 3,245 | 1,690 | 124,010,992 |
| Family Households | 1,759 | 845 | 80,755,759 |
| Married couple, w/children | 40.9% | 18.6% | 30.5% |
| Married couple, no children | 33.1% | 58.6% | 42.9% |
| Non Family Households | 1,486 | 845 | 43,255,233 |
| Single householder, w/children | 12.7% | 12.5% | 15.8% |
| Single householder, no children | 13.2% | 10.3% | 10.8% |