| | Carmel, IN | Downers Grove, IL | United States |
| Population | 98,137 | 50,209 | 329,725,481 |
| Female Population | 51.9% | 51.8% | 50.5% |
| Male Population | 48.1% | 48.2% | 49.5% |
| Median Age | 40.3 | 42.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 84,509 | 48,943 | 309,327,143 |
| Population - 2000 | 37,733 | 48,724 | 285,036,114 |
| Population - 1990 | 25,380 | 46,858 | 251,960,433 |
| Pop. 2000 to Now | 169.4% | 0.0% | 15.6% |
| Pop. 1990 to Now | 300.5% | 4.0% | 30.8% |
| space4 | | | |
| Population Density | 2,067.7 | 3,459.8 | 93.4 |
| Land Area | 47.5 | 14.5 | 3,531,905.4 |
| Water Area | 1.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Carmel, IN | Downers Grove, IL | United States |
| Age 0 to 4 | 5.3% | 5.8% | 5.9% |
| Age 5 to 9 | 7.1% | 7.2% | 6.1% |
| Age 10 to 14 | 8.1% | 5.8% | 6.6% |
| Age 15 to 17 | 4.9% | 3.6% | 3.9% |
| Age 18 to 20 | 2.9% | 2.7% | 4.0% |
| Age 21 to 24 | 3.9% | 4.1% | 5.2% |
| Age 25 to 34 | 10.4% | 11.5% | 13.8% |
| Age 35 to 44 | 14.4% | 11.7% | 12.9% |
| Age 45 to 54 | 15.6% | 13.1% | 12.6% |
| Age 55 to 59 | 7.1% | 7.8% | 6.7% |
| Age 60 to 64 | 6.2% | 6.9% | 6.3% |
| Age 65 to 74 | 8.5% | 12.2% | 9.6% |
| Age 75 to 84 | 3.8% | 5.3% | 4.5% |
| Age 85 and over | 1.8% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Carmel, IN | Downers Grove, IL | United States |
| White | 78.2% | 82.8% | 59.4% |
| Black | 2.8% | 3.3% | 12.2% |
| Asian | 11.1% | 5.7% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.0% | 0.2% |
| Other | 0.3% | 0.1% | 0.4% |
| Two or More Races | 3.2% | 2.4% | 3.2% |
| Hispanic | 4.0% | 5.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Carmel, IN | Downers Grove, IL | United States |
| Married Population | 64.8% | 57.6% | 49.8% |
| Currently Married | 64.1% | 56.9% | 48.0% |
| Married but Separated | 0.6% | 0.6% | 1.8% |
| Single Population | 35.2% | 42.4% | 50.2% |
| Never Married | 24.1% | 27.3% | 33.8% |
| Divorced | 7.7% | 9.7% | 10.8% |
| Widowed | 3.4% | 5.4% | 5.6% |
| space5 | | | |
| Household Size | 2.62 | 2.44 | 2.60 |
| Households | 37,229 | 20,382 | 124,010,992 |
| Family Households | 27,514 | 13,343 | 80,755,759 |
| Married couple, w/children | 42.1% | 36.9% | 30.5% |
| Married couple, no children | 46.2% | 47.8% | 42.9% |
| Non Family Households | 9,715 | 7,039 | 43,255,233 |
| Single householder, w/children | 7.6% | 6.9% | 15.8% |
| Single householder, no children | 4.2% | 8.5% | 10.8% |