| | Brighton, IL | Eldorado Springs, CO | United States |
| Population | 2,416 | 295 | 329,725,481 |
| Female Population | 47.0% | 36.6% | 50.5% |
| Male Population | 53.0% | 63.4% | 49.5% |
| Median Age | 37 | 54.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,256 | 700 | 309,327,143 |
| Population - 2000 | 2,196 | 557 | 285,036,114 |
| Population - 1990 | 2,270 | 563 | 251,960,433 |
| Pop. 2000 to Now | -3.5% | 38.4% | 15.6% |
| Pop. 1990 to Now | -6.7% | 36.9% | 30.8% |
| space4 | | | |
| Population Density | 1,289.9 | 114.2 | 93.4 |
| Land Area | 1.9 | 2.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Brighton, IL | Eldorado Springs, CO | United States |
| Age 0 to 4 | 8.1% | 1.0% | 5.9% |
| Age 5 to 9 | 8.0% | 0.0% | 6.1% |
| Age 10 to 14 | 6.6% | 3.1% | 6.6% |
| Age 15 to 17 | 6.3% | 8.5% | 3.9% |
| Age 18 to 20 | 2.9% | 0.0% | 4.0% |
| Age 21 to 24 | 2.9% | 0.7% | 5.2% |
| Age 25 to 34 | 12.4% | 8.1% | 13.8% |
| Age 35 to 44 | 17.1% | 15.3% | 12.9% |
| Age 45 to 54 | 12.3% | 15.3% | 12.6% |
| Age 55 to 59 | 5.3% | 4.1% | 6.7% |
| Age 60 to 64 | 4.4% | 11.2% | 6.3% |
| Age 65 to 74 | 7.8% | 23.1% | 9.6% |
| Age 75 to 84 | 2.4% | 5.1% | 4.5% |
| Age 85 and over | 3.7% | 4.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Brighton, IL | Eldorado Springs, CO | United States |
| White | 92.5% | 89.8% | 59.4% |
| Black | 0.4% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.5% | 3.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 2.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.9% | 4.7% | 3.2% |
| Hispanic | 2.7% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Brighton, IL | Eldorado Springs, CO | United States |
| Married Population | 52.3% | 40.3% | 49.8% |
| Currently Married | 50.8% | 40.3% | 48.0% |
| Married but Separated | 1.5% | 0.0% | 1.8% |
| Single Population | 47.7% | 59.7% | 50.2% |
| Never Married | 27.3% | 46.6% | 33.8% |
| Divorced | 13.3% | 13.1% | 10.8% |
| Widowed | 7.1% | 0.0% | 5.6% |
| space5 | | | |
| Household Size | 2.84 | 1.77 | 2.60 |
| Households | 832 | 154 | 124,010,992 |
| Family Households | 601 | 65 | 80,755,759 |
| Married couple, w/children | 36.1% | 26.2% | 30.5% |
| Married couple, no children | 38.3% | 50.8% | 42.9% |
| Non Family Households | 231 | 89 | 43,255,233 |
| Single householder, w/children | 20.3% | 0.0% | 15.8% |
| Single householder, no children | 5.3% | 23.1% | 10.8% |