| | East Chicago, IN | Westmont, IL | United States |
| Population | 26,502 | 24,632 | 329,725,481 |
| Female Population | 51.1% | 52.7% | 50.5% |
| Male Population | 49.0% | 47.3% | 49.5% |
| Median Age | 35.8 | 40.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 29,695 | 24,694 | 309,327,143 |
| Population - 2000 | 32,414 | 24,554 | 285,036,114 |
| Population - 1990 | 33,892 | 21,228 | 251,960,433 |
| Pop. 2000 to Now | -14.4% | -1.2% | 15.6% |
| Pop. 1990 to Now | -18.2% | 14.3% | 30.8% |
| space4 | | | |
| Population Density | 1,880.9 | 4,927.4 | 93.4 |
| Land Area | 14.1 | 5.0 | 3,531,905.4 |
| Water Area | 2.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | East Chicago, IN | Westmont, IL | United States |
| Age 0 to 4 | 6.9% | 6.4% | 5.9% |
| Age 5 to 9 | 7.5% | 5.6% | 6.1% |
| Age 10 to 14 | 7.6% | 4.9% | 6.6% |
| Age 15 to 17 | 4.3% | 3.3% | 3.9% |
| Age 18 to 20 | 4.0% | 2.7% | 4.0% |
| Age 21 to 24 | 5.2% | 4.5% | 5.2% |
| Age 25 to 34 | 13.3% | 15.1% | 13.8% |
| Age 35 to 44 | 13.4% | 12.7% | 12.9% |
| Age 45 to 54 | 11.6% | 11.3% | 12.6% |
| Age 55 to 59 | 7.1% | 7.0% | 6.7% |
| Age 60 to 64 | 4.2% | 7.8% | 6.3% |
| Age 65 to 74 | 9.0% | 10.9% | 9.6% |
| Age 75 to 84 | 4.0% | 5.5% | 4.5% |
| Age 85 and over | 1.9% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | East Chicago, IN | Westmont, IL | United States |
| White | 5.9% | 63.9% | 59.4% |
| Black | 36.5% | 6.2% | 12.2% |
| Asian | 0.1% | 12.9% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.3% | 0.4% |
| Two or More Races | 0.3% | 3.5% | 3.2% |
| Hispanic | 57.2% | 13.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | East Chicago, IN | Westmont, IL | United States |
| Married Population | 33.2% | 51.9% | 49.8% |
| Currently Married | 30.9% | 50.8% | 48.0% |
| Married but Separated | 2.3% | 1.1% | 1.8% |
| Single Population | 66.8% | 48.1% | 50.2% |
| Never Married | 46.3% | 31.8% | 33.8% |
| Divorced | 13.7% | 9.2% | 10.8% |
| Widowed | 6.8% | 7.0% | 5.6% |
| space5 | | | |
| Household Size | 2.65 | 2.33 | 2.60 |
| Households | 9,953 | 10,401 | 124,010,992 |
| Family Households | 5,845 | 6,285 | 80,755,759 |
| Married couple, w/children | 23.6% | 29.0% | 30.5% |
| Married couple, no children | 23.4% | 48.3% | 42.9% |
| Non Family Households | 4,108 | 4,116 | 43,255,233 |
| Single householder, w/children | 36.9% | 14.2% | 15.8% |
| Single householder, no children | 16.1% | 8.4% | 10.8% |