| | Idaho Springs, CO | Eagle, CO | United States |
| Population | 2,044 | 7,420 | 329,725,481 |
| Female Population | 54.4% | 48.1% | 50.5% |
| Male Population | 45.6% | 51.9% | 49.5% |
| Median Age | 40.5 | 35.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,724 | 6,499 | 309,327,143 |
| Population - 2000 | 1,889 | 3,032 | 285,036,114 |
| Population - 1990 | 1,834 | 1,580 | 251,960,433 |
| Pop. 2000 to Now | -1.7% | 127.9% | 15.6% |
| Pop. 1990 to Now | 1.3% | 337.4% | 30.8% |
| space4 | | | |
| Population Density | 908.4 | 1,317.2 | 93.4 |
| Land Area | 2.3 | 5.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Idaho Springs, CO | Eagle, CO | United States |
| Age 0 to 4 | 2.6% | 4.7% | 5.9% |
| Age 5 to 9 | 3.6% | 6.8% | 6.1% |
| Age 10 to 14 | 0.6% | 11.2% | 6.6% |
| Age 15 to 17 | 1.8% | 4.5% | 3.9% |
| Age 18 to 20 | 2.6% | 5.4% | 4.0% |
| Age 21 to 24 | 13.3% | 6.2% | 5.2% |
| Age 25 to 34 | 19.8% | 10.8% | 13.8% |
| Age 35 to 44 | 10.5% | 21.4% | 12.9% |
| Age 45 to 54 | 11.2% | 14.1% | 12.6% |
| Age 55 to 59 | 7.8% | 6.5% | 6.7% |
| Age 60 to 64 | 8.5% | 5.4% | 6.3% |
| Age 65 to 74 | 13.4% | 2.0% | 9.6% |
| Age 75 to 84 | 2.8% | 1.2% | 4.5% |
| Age 85 and over | 1.7% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Idaho Springs, CO | Eagle, CO | United States |
| White | 80.2% | 71.7% | 59.4% |
| Black | 2.8% | 0.1% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.3% | 0.0% | 0.4% |
| Two or More Races | 2.3% | 2.2% | 3.2% |
| Hispanic | 13.4% | 26.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Idaho Springs, CO | Eagle, CO | United States |
| Married Population | 47.0% | 49.9% | 49.8% |
| Currently Married | 46.3% | 49.9% | 48.0% |
| Married but Separated | 0.6% | 0.0% | 1.8% |
| Single Population | 53.0% | 50.1% | 50.2% |
| Never Married | 34.1% | 35.1% | 33.8% |
| Divorced | 14.7% | 14.3% | 10.8% |
| Widowed | 4.2% | 0.8% | 5.6% |
| space5 | | | |
| Household Size | 2.37 | 3.30 | 2.60 |
| Households | 863 | 2,217 | 124,010,992 |
| Family Households | 499 | 1,605 | 80,755,759 |
| Married couple, w/children | 29.7% | 53.5% | 30.5% |
| Married couple, no children | 54.1% | 22.2% | 42.9% |
| Non Family Households | 364 | 612 | 43,255,233 |
| Single householder, w/children | 0.0% | 15.6% | 15.8% |
| Single householder, no children | 16.2% | 8.7% | 10.8% |