| | Carlinville, IL | Uniontown, PA | United States |
| Population | 5,719 | 9,988 | 329,725,481 |
| Female Population | 52.6% | 51.3% | 50.5% |
| Male Population | 47.4% | 48.7% | 49.5% |
| Median Age | 40.3 | 43 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,920 | 10,337 | 309,327,143 |
| Population - 2000 | 5,685 | 12,422 | 285,036,114 |
| Population - 1990 | 5,416 | 12,034 | 251,960,433 |
| Pop. 2000 to Now | -4.3% | -22.5% | 15.6% |
| Pop. 1990 to Now | 0.5% | -20.0% | 30.8% |
| space4 | | | |
| Population Density | 1,698.5 | 4,893.7 | 93.4 |
| Land Area | 3.4 | 2.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Carlinville, IL | Uniontown, PA | United States |
| Age 0 to 4 | 5.5% | 6.7% | 5.9% |
| Age 5 to 9 | 6.3% | 6.1% | 6.1% |
| Age 10 to 14 | 4.5% | 4.1% | 6.6% |
| Age 15 to 17 | 2.8% | 2.4% | 3.9% |
| Age 18 to 20 | 7.9% | 1.9% | 4.0% |
| Age 21 to 24 | 7.0% | 3.7% | 5.2% |
| Age 25 to 34 | 11.4% | 15.5% | 13.8% |
| Age 35 to 44 | 8.5% | 12.7% | 12.9% |
| Age 45 to 54 | 10.7% | 11.2% | 12.6% |
| Age 55 to 59 | 4.6% | 5.6% | 6.7% |
| Age 60 to 64 | 7.5% | 5.6% | 6.3% |
| Age 65 to 74 | 12.4% | 14.2% | 9.6% |
| Age 75 to 84 | 5.8% | 6.0% | 4.5% |
| Age 85 and over | 4.9% | 4.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Carlinville, IL | Uniontown, PA | United States |
| White | 92.5% | 73.9% | 59.4% |
| Black | 2.6% | 18.2% | 12.2% |
| Asian | 0.0% | 0.5% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 1.8% | 5.4% | 3.2% |
| Hispanic | 3.1% | 1.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Carlinville, IL | Uniontown, PA | United States |
| Married Population | 40.3% | 34.3% | 49.8% |
| Currently Married | 39.7% | 31.1% | 48.0% |
| Married but Separated | 0.6% | 3.3% | 1.8% |
| Single Population | 59.7% | 65.7% | 50.2% |
| Never Married | 40.2% | 39.0% | 33.8% |
| Divorced | 12.6% | 14.4% | 10.8% |
| Widowed | 6.9% | 12.3% | 5.6% |
| space5 | | | |
| Household Size | 2.47 | 2.02 | 2.60 |
| Households | 2,098 | 4,703 | 124,010,992 |
| Family Households | 1,256 | 2,047 | 80,755,759 |
| Married couple, w/children | 24.6% | 22.1% | 30.5% |
| Married couple, no children | 44.7% | 34.1% | 42.9% |
| Non Family Households | 842 | 2,656 | 43,255,233 |
| Single householder, w/children | 18.6% | 23.2% | 15.8% |
| Single householder, no children | 12.1% | 20.7% | 10.8% |