| | Brentwood, MD | Goreville, IL | United States |
| Population | 3,775 | 1,125 | 329,725,481 |
| Female Population | 51.0% | 56.1% | 50.5% |
| Male Population | 49.0% | 43.9% | 49.5% |
| Median Age | 33.8 | 47.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,322 | 1,044 | 309,327,143 |
| Population - 2000 | 2,844 | 938 | 285,036,114 |
| Population - 1990 | 3,005 | 872 | 251,960,433 |
| Pop. 2000 to Now | 20.9% | 11.5% | 15.6% |
| Pop. 1990 to Now | 14.4% | 20.0% | 30.8% |
| space4 | | | |
| Population Density | 9,805.2 | 419.0 | 93.4 |
| Land Area | 0.4 | 2.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Brentwood, MD | Goreville, IL | United States |
| Age 0 to 4 | 8.9% | 4.8% | 5.9% |
| Age 5 to 9 | 7.2% | 5.9% | 6.1% |
| Age 10 to 14 | 7.6% | 7.0% | 6.6% |
| Age 15 to 17 | 3.7% | 2.4% | 3.9% |
| Age 18 to 20 | 1.9% | 8.4% | 4.0% |
| Age 21 to 24 | 4.9% | 1.0% | 5.2% |
| Age 25 to 34 | 18.8% | 9.7% | 13.8% |
| Age 35 to 44 | 15.0% | 9.0% | 12.9% |
| Age 45 to 54 | 12.6% | 13.2% | 12.6% |
| Age 55 to 59 | 4.7% | 7.2% | 6.7% |
| Age 60 to 64 | 4.7% | 6.7% | 6.3% |
| Age 65 to 74 | 6.4% | 9.2% | 9.6% |
| Age 75 to 84 | 2.7% | 14.7% | 4.5% |
| Age 85 and over | 0.8% | 0.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Brentwood, MD | Goreville, IL | United States |
| White | 11.3% | 99.3% | 59.4% |
| Black | 29.0% | 0.0% | 12.2% |
| Asian | 1.7% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.0% | 0.1% | 3.2% |
| Hispanic | 55.1% | 0.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Brentwood, MD | Goreville, IL | United States |
| Married Population | 40.2% | 55.8% | 49.8% |
| Currently Married | 39.4% | 55.0% | 48.0% |
| Married but Separated | 0.8% | 0.9% | 1.8% |
| Single Population | 59.8% | 44.2% | 50.2% |
| Never Married | 46.5% | 23.7% | 33.8% |
| Divorced | 9.9% | 13.0% | 10.8% |
| Widowed | 3.4% | 7.6% | 5.6% |
| space5 | | | |
| Household Size | 2.91 | 2.45 | 2.60 |
| Households | 1,298 | 460 | 124,010,992 |
| Family Households | 794 | 324 | 80,755,759 |
| Married couple, w/children | 35.0% | 23.5% | 30.5% |
| Married couple, no children | 23.7% | 53.7% | 42.9% |
| Non Family Households | 504 | 136 | 43,255,233 |
| Single householder, w/children | 23.3% | 13.6% | 15.8% |
| Single householder, no children | 18.0% | 9.3% | 10.8% |