| | Zavalla, TX | Hempstead, TX | United States |
| Population | 690 | 5,709 | 329,725,481 |
| Female Population | 59.1% | 51.5% | 50.5% |
| Male Population | 40.9% | 48.6% | 49.5% |
| Median Age | 41.7 | 23.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 709 | 5,813 | 309,327,143 |
| Population - 2000 | 647 | 4,691 | 285,036,114 |
| Population - 1990 | 701 | 3,551 | 251,960,433 |
| Pop. 2000 to Now | 10.1% | 88.3% | 15.6% |
| Pop. 1990 to Now | 1.6% | 148.8% | 30.8% |
| space4 | | | |
| Population Density | 330.5 | 923.0 | 93.4 |
| Land Area | 2.1 | 6.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Zavalla, TX | Hempstead, TX | United States |
| Age 0 to 4 | 11.9% | 13.8% | 5.9% |
| Age 5 to 9 | 3.3% | 18.3% | 6.1% |
| Age 10 to 14 | 6.8% | 4.2% | 6.6% |
| Age 15 to 17 | 4.6% | 3.7% | 3.9% |
| Age 18 to 20 | 2.3% | 2.1% | 4.0% |
| Age 21 to 24 | 4.6% | 9.1% | 5.2% |
| Age 25 to 34 | 9.0% | 20.9% | 13.8% |
| Age 35 to 44 | 12.0% | 7.7% | 12.9% |
| Age 45 to 54 | 23.5% | 5.3% | 12.6% |
| Age 55 to 59 | 5.4% | 3.9% | 6.7% |
| Age 60 to 64 | 4.3% | 4.2% | 6.3% |
| Age 65 to 74 | 5.9% | 4.6% | 9.6% |
| Age 75 to 84 | 5.5% | 1.8% | 4.5% |
| Age 85 and over | 0.7% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Zavalla, TX | Hempstead, TX | United States |
| White | 90.7% | 12.0% | 59.4% |
| Black | 0.0% | 48.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 1.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 9.3% | 1.3% | 3.2% |
| Hispanic | 0.0% | 37.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Zavalla, TX | Hempstead, TX | United States |
| Married Population | 39.4% | 35.5% | 49.8% |
| Currently Married | 36.1% | 32.8% | 48.0% |
| Married but Separated | 3.3% | 2.6% | 1.8% |
| Single Population | 60.6% | 64.5% | 50.2% |
| Never Married | 24.5% | 55.2% | 33.8% |
| Divorced | 25.8% | 4.2% | 10.8% |
| Widowed | 10.2% | 5.2% | 5.6% |
| space5 | | | |
| Household Size | 2.44 | 2.55 | 2.60 |
| Households | 283 | 2,210 | 124,010,992 |
| Family Households | 199 | 1,324 | 80,755,759 |
| Married couple, w/children | 27.1% | 19.5% | 30.5% |
| Married couple, no children | 19.1% | 22.4% | 42.9% |
| Non Family Households | 84 | 886 | 43,255,233 |
| Single householder, w/children | 28.6% | 53.9% | 15.8% |
| Single householder, no children | 25.1% | 4.3% | 10.8% |