| | Auburn, IL | Jerome, IL | United States |
| Population | 4,563 | 2,049 | 329,725,481 |
| Female Population | 50.8% | 55.1% | 50.5% |
| Male Population | 49.2% | 44.9% | 49.5% |
| Median Age | 35.7 | 33.6 | 38.4 |
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| Population - 2010 | 4,817 | 1,694 | 309,327,143 |
| Population - 2000 | 4,317 | 1,414 | 285,036,114 |
| Population - 1990 | 3,724 | 1,206 | 251,960,433 |
| Pop. 2000 to Now | 6.4% | 11.4% | 15.6% |
| Pop. 1990 to Now | 23.3% | 30.6% | 30.8% |
| space4 | | | |
| Population Density | 1,105.1 | 4,444.7 | 93.4 |
| Land Area | 4.1 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Auburn, IL | Jerome, IL | United States |
| Age 0 to 4 | 6.7% | 5.7% | 5.9% |
| Age 5 to 9 | 6.7% | 6.1% | 6.1% |
| Age 10 to 14 | 6.9% | 7.4% | 6.6% |
| Age 15 to 17 | 5.2% | 2.1% | 3.9% |
| Age 18 to 20 | 1.6% | 3.3% | 4.0% |
| Age 21 to 24 | 5.2% | 9.4% | 5.2% |
| Age 25 to 34 | 15.6% | 19.3% | 13.8% |
| Age 35 to 44 | 15.3% | 9.3% | 12.9% |
| Age 45 to 54 | 8.7% | 9.7% | 12.6% |
| Age 55 to 59 | 9.0% | 5.2% | 6.7% |
| Age 60 to 64 | 5.9% | 8.0% | 6.3% |
| Age 65 to 74 | 6.1% | 9.4% | 9.6% |
| Age 75 to 84 | 4.9% | 4.1% | 4.5% |
| Age 85 and over | 2.3% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Auburn, IL | Jerome, IL | United States |
| White | 91.5% | 85.7% | 59.4% |
| Black | 0.8% | 5.1% | 12.2% |
| Asian | 0.2% | 1.2% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.9% | 0.4% |
| Two or More Races | 1.2% | 5.0% | 3.2% |
| Hispanic | 6.2% | 2.2% | 18.4% |
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| Marriage & Family | | | |
| | Auburn, IL | Jerome, IL | United States |
| Married Population | 49.0% | 44.9% | 49.8% |
| Currently Married | 48.5% | 42.2% | 48.0% |
| Married but Separated | 0.5% | 2.7% | 1.8% |
| Single Population | 51.0% | 55.1% | 50.2% |
| Never Married | 30.3% | 32.9% | 33.8% |
| Divorced | 13.8% | 16.3% | 10.8% |
| Widowed | 6.9% | 5.9% | 5.6% |
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| Household Size | 2.76 | 2.04 | 2.60 |
| Households | 1,630 | 1,006 | 124,010,992 |
| Family Households | 1,125 | 539 | 80,755,759 |
| Married couple, w/children | 32.7% | 23.2% | 30.5% |
| Married couple, no children | 41.3% | 36.7% | 42.9% |
| Non Family Households | 505 | 467 | 43,255,233 |
| Single householder, w/children | 11.3% | 28.4% | 15.8% |
| Single householder, no children | 14.7% | 11.7% | 10.8% |