| | Glenwood, IL | Greenacres, FL | United States |
| Population | 8,590 | 43,482 | 329,725,481 |
| Female Population | 55.7% | 51.7% | 50.5% |
| Male Population | 44.3% | 48.3% | 49.5% |
| Median Age | 44.7 | 37.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 8,992 | 37,648 | 309,327,143 |
| Population - 2000 | 9,000 | 27,569 | 285,036,114 |
| Population - 1990 | 9,289 | 21,610 | 251,960,433 |
| Pop. 2000 to Now | -4.3% | 49.1% | 15.6% |
| Pop. 1990 to Now | -7.2% | 90.2% | 30.8% |
| space4 | | | |
| Population Density | 2,667.7 | 7,448.1 | 93.4 |
| Land Area | 3.2 | 5.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Glenwood, IL | Greenacres, FL | United States |
| Age 0 to 4 | 4.0% | 7.2% | 5.9% |
| Age 5 to 9 | 3.9% | 6.2% | 6.1% |
| Age 10 to 14 | 8.9% | 6.1% | 6.6% |
| Age 15 to 17 | 5.6% | 3.5% | 3.9% |
| Age 18 to 20 | 4.1% | 4.0% | 4.0% |
| Age 21 to 24 | 4.1% | 4.9% | 5.2% |
| Age 25 to 34 | 10.5% | 14.3% | 13.8% |
| Age 35 to 44 | 9.6% | 12.6% | 12.9% |
| Age 45 to 54 | 17.3% | 12.7% | 12.6% |
| Age 55 to 59 | 6.0% | 6.2% | 6.7% |
| Age 60 to 64 | 8.0% | 6.3% | 6.3% |
| Age 65 to 74 | 9.8% | 8.1% | 9.6% |
| Age 75 to 84 | 5.3% | 5.9% | 4.5% |
| Age 85 and over | 2.9% | 2.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Glenwood, IL | Greenacres, FL | United States |
| White | 20.0% | 26.3% | 59.4% |
| Black | 68.9% | 26.0% | 12.2% |
| Asian | 0.4% | 3.6% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.4% | 0.4% |
| Two or More Races | 4.7% | 2.3% | 3.2% |
| Hispanic | 5.7% | 41.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Glenwood, IL | Greenacres, FL | United States |
| Married Population | 36.3% | 44.6% | 49.8% |
| Currently Married | 35.1% | 41.8% | 48.0% |
| Married but Separated | 1.3% | 2.7% | 1.8% |
| Single Population | 63.7% | 55.4% | 50.2% |
| Never Married | 43.7% | 35.0% | 33.8% |
| Divorced | 13.1% | 13.6% | 10.8% |
| Widowed | 6.8% | 6.8% | 5.6% |
| space5 | | | |
| Household Size | 2.74 | 2.81 | 2.60 |
| Households | 3,015 | 15,448 | 124,010,992 |
| Family Households | 2,070 | 10,514 | 80,755,759 |
| Married couple, w/children | 15.5% | 24.6% | 30.5% |
| Married couple, no children | 40.5% | 36.4% | 42.9% |
| Non Family Households | 945 | 4,934 | 43,255,233 |
| Single householder, w/children | 21.5% | 21.4% | 15.8% |
| Single householder, no children | 22.4% | 17.6% | 10.8% |