| | Caldwell, TX | Pasadena, TX | United States |
| Population | 4,013 | 151,964 | 329,725,481 |
| Female Population | 47.1% | 49.9% | 50.5% |
| Male Population | 53.0% | 50.2% | 49.5% |
| Median Age | 36.8 | 31.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,115 | 149,603 | 309,327,143 |
| Population - 2000 | 3,449 | 141,674 | 285,036,114 |
| Population - 1990 | 3,181 | 119,363 | 251,960,433 |
| Pop. 2000 to Now | 30.3% | 5.5% | 15.6% |
| Pop. 1990 to Now | 41.3% | 25.2% | 30.8% |
| space4 | | | |
| Population Density | 1,029.5 | 3,483.9 | 93.4 |
| Land Area | 3.9 | 43.6 | 3,531,905.4 |
| Water Area | 0.0 | 1.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Caldwell, TX | Pasadena, TX | United States |
| Age 0 to 4 | 6.2% | 8.1% | 5.9% |
| Age 5 to 9 | 8.4% | 7.8% | 6.1% |
| Age 10 to 14 | 8.7% | 8.7% | 6.6% |
| Age 15 to 17 | 3.9% | 5.0% | 3.9% |
| Age 18 to 20 | 4.3% | 4.6% | 4.0% |
| Age 21 to 24 | 4.1% | 5.7% | 5.2% |
| Age 25 to 34 | 12.3% | 14.3% | 13.8% |
| Age 35 to 44 | 12.5% | 13.2% | 12.9% |
| Age 45 to 54 | 14.4% | 12.0% | 12.6% |
| Age 55 to 59 | 6.6% | 5.9% | 6.7% |
| Age 60 to 64 | 4.5% | 4.6% | 6.3% |
| Age 65 to 74 | 7.0% | 6.6% | 9.6% |
| Age 75 to 84 | 5.4% | 2.6% | 4.5% |
| Age 85 and over | 1.7% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Caldwell, TX | Pasadena, TX | United States |
| White | 52.6% | 22.7% | 59.4% |
| Black | 14.6% | 2.4% | 12.2% |
| Asian | 0.0% | 1.5% | 5.6% |
| Native American | 0.6% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.0% | 0.4% |
| Two or More Races | 3.3% | 1.6% | 3.2% |
| Hispanic | 28.8% | 71.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Caldwell, TX | Pasadena, TX | United States |
| Married Population | 51.9% | 51.5% | 49.8% |
| Currently Married | 48.5% | 47.7% | 48.0% |
| Married but Separated | 3.4% | 3.8% | 1.8% |
| Single Population | 48.1% | 48.5% | 50.2% |
| Never Married | 29.5% | 34.6% | 33.8% |
| Divorced | 11.7% | 9.2% | 10.8% |
| Widowed | 7.0% | 4.8% | 5.6% |
| space5 | | | |
| Household Size | 2.45 | 3.10 | 2.60 |
| Households | 1,582 | 48,686 | 124,010,992 |
| Family Households | 874 | 36,384 | 80,755,759 |
| Married couple, w/children | 43.0% | 35.5% | 30.5% |
| Married couple, no children | 36.3% | 32.5% | 42.9% |
| Non Family Households | 708 | 12,302 | 43,255,233 |
| Single householder, w/children | 8.9% | 21.2% | 15.8% |
| Single householder, no children | 11.8% | 10.7% | 10.8% |