| | Lake Colorado City, TX | Colorado City, AZ | United States |
| Population | 752 | 2,744 | 329,725,481 |
| Female Population | 42.3% | 53.5% | 50.5% |
| Male Population | 57.7% | 46.5% | 49.5% |
| Median Age | 37.8 | 17.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 617 | 4,820 | 309,327,143 |
| Population - 2000 | 682 | 3,334 | 285,036,114 |
| Population - 1990 | 459 | 2,426 | 251,960,433 |
| Pop. 2000 to Now | -40.3% | 47.2% | 15.6% |
| Pop. 1990 to Now | -11.3% | 102.2% | 30.8% |
| space4 | | | |
| Population Density | 97.0 | 265.6 | 93.4 |
| Land Area | 7.8 | 10.3 | 3,531,905.4 |
| Water Area | 1.4 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lake Colorado City, TX | Colorado City, AZ | United States |
| Age 0 to 4 | 0.0% | 6.7% | 5.9% |
| Age 5 to 9 | 4.5% | 12.4% | 6.1% |
| Age 10 to 14 | 7.4% | 20.7% | 6.6% |
| Age 15 to 17 | 0.7% | 11.0% | 3.9% |
| Age 18 to 20 | 12.5% | 7.9% | 4.0% |
| Age 21 to 24 | 6.1% | 3.2% | 5.2% |
| Age 25 to 34 | 3.1% | 11.8% | 13.8% |
| Age 35 to 44 | 19.4% | 8.5% | 12.9% |
| Age 45 to 54 | 11.2% | 10.6% | 12.6% |
| Age 55 to 59 | 11.7% | 5.0% | 6.7% |
| Age 60 to 64 | 5.5% | 1.3% | 6.3% |
| Age 65 to 74 | 7.6% | 1.1% | 9.6% |
| Age 75 to 84 | 3.3% | 0.0% | 4.5% |
| Age 85 and over | 7.0% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lake Colorado City, TX | Colorado City, AZ | United States |
| White | 77.3% | 99.7% | 59.4% |
| Black | 0.0% | 0.0% | 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 | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.2% | 0.0% | 3.2% |
| Hispanic | 21.5% | 0.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lake Colorado City, TX | Colorado City, AZ | United States |
| Married Population | 50.6% | 42.5% | 49.8% |
| Currently Married | 50.6% | 37.6% | 48.0% |
| Married but Separated | 0.0% | 4.9% | 1.8% |
| Single Population | 49.4% | 57.5% | 50.2% |
| Never Married | 19.6% | 51.8% | 33.8% |
| Divorced | 18.9% | 5.1% | 10.8% |
| Widowed | 10.9% | 0.5% | 5.6% |
| space5 | | | |
| Household Size | 4.15 | 5.41 | 2.60 |
| Households | 181 | 507 | 124,010,992 |
| Family Households | 111 | 445 | 80,755,759 |
| Married couple, w/children | 28.8% | 35.3% | 30.5% |
| Married couple, no children | 67.6% | 27.0% | 42.9% |
| Non Family Households | 70 | 62 | 43,255,233 |
| Single householder, w/children | 0.0% | 37.1% | 15.8% |
| Single householder, no children | 3.6% | 0.7% | 10.8% |