| | Dacono, CO | Castle Pines, CO | United States |
| Population | 6,084 | 11,296 | 329,725,481 |
| Female Population | 50.2% | 49.8% | 50.5% |
| Male Population | 49.9% | 50.2% | 49.5% |
| Median Age | 31.6 | 43.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,189 | 10,368 | 309,327,143 |
| Population - 2000 | 3,015 | 5,958 | 285,036,114 |
| Population - 1990 | 2,228 | 554 | 251,960,433 |
| Pop. 2000 to Now | 118.0% | 95.8% | 15.6% |
| Pop. 1990 to Now | 195.0% | 2,005.4% | 30.8% |
| space4 | | | |
| Population Density | 728.6 | 1,177.4 | 93.4 |
| Land Area | 8.4 | 9.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Dacono, CO | Castle Pines, CO | United States |
| Age 0 to 4 | 11.2% | 3.7% | 5.9% |
| Age 5 to 9 | 8.2% | 5.9% | 6.1% |
| Age 10 to 14 | 8.5% | 8.5% | 6.6% |
| Age 15 to 17 | 3.4% | 6.1% | 3.9% |
| Age 18 to 20 | 0.7% | 4.2% | 4.0% |
| Age 21 to 24 | 2.7% | 4.6% | 5.2% |
| Age 25 to 34 | 22.9% | 7.6% | 13.8% |
| Age 35 to 44 | 16.1% | 12.6% | 12.9% |
| Age 45 to 54 | 11.3% | 19.1% | 12.6% |
| Age 55 to 59 | 3.9% | 9.3% | 6.7% |
| Age 60 to 64 | 4.7% | 4.5% | 6.3% |
| Age 65 to 74 | 4.3% | 8.9% | 9.6% |
| Age 75 to 84 | 1.6% | 3.3% | 4.5% |
| Age 85 and over | 0.4% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Dacono, CO | Castle Pines, CO | United States |
| White | 63.1% | 82.4% | 59.4% |
| Black | 0.7% | 4.2% | 12.2% |
| Asian | 4.8% | 5.3% | 5.6% |
| Native American | 0.2% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.5% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.0% | 2.3% | 3.2% |
| Hispanic | 30.2% | 5.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Dacono, CO | Castle Pines, CO | United States |
| Married Population | 64.2% | 65.8% | 49.8% |
| Currently Married | 62.8% | 65.0% | 48.0% |
| Married but Separated | 1.4% | 0.8% | 1.8% |
| Single Population | 35.8% | 34.2% | 50.2% |
| Never Married | 23.2% | 24.5% | 33.8% |
| Divorced | 8.4% | 7.4% | 10.8% |
| Widowed | 4.2% | 2.3% | 5.6% |
| space5 | | | |
| Household Size | 2.98 | 3.01 | 2.60 |
| Households | 2,043 | 3,747 | 124,010,992 |
| Family Households | 1,597 | 3,269 | 80,755,759 |
| Married couple, w/children | 44.0% | 45.0% | 30.5% |
| Married couple, no children | 35.6% | 46.2% | 42.9% |
| Non Family Households | 446 | 478 | 43,255,233 |
| Single householder, w/children | 12.9% | 4.6% | 15.8% |
| Single householder, no children | 7.5% | 4.3% | 10.8% |