| | Castle Hills, TX | Taylor, MI | United States |
| Population | 4,007 | 63,071 | 329,725,481 |
| Female Population | 47.4% | 50.0% | 50.5% |
| Male Population | 52.6% | 50.0% | 49.5% |
| Median Age | 43.4 | 38.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,137 | 62,983 | 309,327,143 |
| Population - 2000 | 4,202 | 65,868 | 285,036,114 |
| Population - 1990 | 4,198 | 70,811 | 251,960,433 |
| Pop. 2000 to Now | 5.9% | -8.0% | 15.6% |
| Pop. 1990 to Now | 6.0% | -14.5% | 30.8% |
| space4 | | | |
| Population Density | 1,622.9 | 2,671.8 | 93.4 |
| Land Area | 2.5 | 23.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Castle Hills, TX | Taylor, MI | United States |
| Age 0 to 4 | 5.7% | 6.5% | 5.9% |
| Age 5 to 9 | 7.2% | 5.6% | 6.1% |
| Age 10 to 14 | 4.5% | 5.6% | 6.6% |
| Age 15 to 17 | 5.6% | 3.8% | 3.9% |
| Age 18 to 20 | 2.4% | 3.9% | 4.0% |
| Age 21 to 24 | 2.8% | 5.6% | 5.2% |
| Age 25 to 34 | 7.4% | 15.4% | 13.8% |
| Age 35 to 44 | 15.2% | 10.2% | 12.9% |
| Age 45 to 54 | 14.6% | 14.1% | 12.6% |
| Age 55 to 59 | 8.5% | 6.6% | 6.7% |
| Age 60 to 64 | 6.6% | 7.4% | 6.3% |
| Age 65 to 74 | 7.9% | 9.3% | 9.6% |
| Age 75 to 84 | 7.1% | 4.0% | 4.5% |
| Age 85 and over | 4.5% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Castle Hills, TX | Taylor, MI | United States |
| White | 45.6% | 69.6% | 59.4% |
| Black | 0.7% | 19.7% | 12.2% |
| Asian | 4.0% | 1.2% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 1.3% | 3.1% | 3.2% |
| Hispanic | 48.2% | 6.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Castle Hills, TX | Taylor, MI | United States |
| Married Population | 56.2% | 41.9% | 49.8% |
| Currently Married | 55.5% | 40.5% | 48.0% |
| Married but Separated | 0.7% | 1.3% | 1.8% |
| Single Population | 43.8% | 58.1% | 50.2% |
| Never Married | 25.2% | 36.6% | 33.8% |
| Divorced | 10.7% | 14.9% | 10.8% |
| Widowed | 7.9% | 6.6% | 5.6% |
| space5 | | | |
| Household Size | 2.62 | 2.53 | 2.60 |
| Households | 1,517 | 24,643 | 124,010,992 |
| Family Households | 989 | 15,693 | 80,755,759 |
| Married couple, w/children | 40.7% | 22.7% | 30.5% |
| Married couple, no children | 47.7% | 38.4% | 42.9% |
| Non Family Households | 528 | 8,950 | 43,255,233 |
| Single householder, w/children | 6.0% | 20.5% | 15.8% |
| Single householder, no children | 5.6% | 18.4% | 10.8% |