| | Palos Park, IL | Highland, IL | United States |
| Population | 4,859 | 10,215 | 329,725,481 |
| Female Population | 52.3% | 50.8% | 50.5% |
| Male Population | 47.7% | 49.2% | 49.5% |
| Median Age | 56.6 | 40.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,858 | 9,967 | 309,327,143 |
| Population - 2000 | 4,689 | 8,438 | 285,036,114 |
| Population - 1990 | 4,199 | 7,525 | 251,960,433 |
| Pop. 2000 to Now | 0.6% | 18.7% | 15.6% |
| Pop. 1990 to Now | 12.4% | 33.1% | 30.8% |
| space4 | | | |
| Population Density | 766.7 | 1,524.2 | 93.4 |
| Land Area | 6.3 | 6.7 | 3,531,905.4 |
| Water Area | 0.1 | 1.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Palos Park, IL | Highland, IL | United States |
| Age 0 to 4 | 2.6% | 6.5% | 5.9% |
| Age 5 to 9 | 5.5% | 6.0% | 6.1% |
| Age 10 to 14 | 6.2% | 5.3% | 6.6% |
| Age 15 to 17 | 2.7% | 2.7% | 3.9% |
| Age 18 to 20 | 1.3% | 1.1% | 4.0% |
| Age 21 to 24 | 3.5% | 5.2% | 5.2% |
| Age 25 to 34 | 4.6% | 15.6% | 13.8% |
| Age 35 to 44 | 9.9% | 13.0% | 12.9% |
| Age 45 to 54 | 12.4% | 10.0% | 12.6% |
| Age 55 to 59 | 6.1% | 7.0% | 6.7% |
| Age 60 to 64 | 14.4% | 9.2% | 6.3% |
| Age 65 to 74 | 16.6% | 9.4% | 9.6% |
| Age 75 to 84 | 9.6% | 5.6% | 4.5% |
| Age 85 and over | 4.7% | 3.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Palos Park, IL | Highland, IL | United States |
| White | 84.0% | 91.0% | 59.4% |
| Black | 0.7% | 3.0% | 12.2% |
| Asian | 1.1% | 2.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.0% | 0.0% | 0.4% |
| Two or More Races | 3.8% | 1.1% | 3.2% |
| Hispanic | 9.4% | 2.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Palos Park, IL | Highland, IL | United States |
| Married Population | 64.8% | 53.8% | 49.8% |
| Currently Married | 64.1% | 50.5% | 48.0% |
| Married but Separated | 0.7% | 3.3% | 1.8% |
| Single Population | 35.2% | 46.2% | 50.2% |
| Never Married | 20.1% | 25.1% | 33.8% |
| Divorced | 6.1% | 12.6% | 10.8% |
| Widowed | 9.0% | 8.4% | 5.6% |
| space5 | | | |
| Household Size | 2.47 | 2.21 | 2.60 |
| Households | 1,915 | 4,553 | 124,010,992 |
| Family Households | 1,348 | 2,763 | 80,755,759 |
| Married couple, w/children | 25.3% | 27.9% | 30.5% |
| Married couple, no children | 67.4% | 46.4% | 42.9% |
| Non Family Households | 567 | 1,790 | 43,255,233 |
| Single householder, w/children | 3.0% | 18.5% | 15.8% |
| Single householder, no children | 4.2% | 7.3% | 10.8% |