| | Hemphill, TX | Zwolle, LA | United States |
| Population | 1,411 | 1,963 | 329,725,481 |
| Female Population | 48.3% | 47.8% | 50.5% |
| Male Population | 51.7% | 52.2% | 49.5% |
| Median Age | 34.8 | 34.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,257 | 1,986 | 309,327,143 |
| Population - 2000 | 1,106 | 1,783 | 285,036,114 |
| Population - 1990 | 1,182 | 1,779 | 251,960,433 |
| Pop. 2000 to Now | 9.5% | 8.1% | 15.6% |
| Pop. 1990 to Now | 2.5% | 8.3% | 30.8% |
| space4 | | | |
| Population Density | 555.7 | 430.3 | 93.4 |
| Land Area | 2.5 | 4.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hemphill, TX | Zwolle, LA | United States |
| Age 0 to 4 | 14.1% | 13.0% | 5.9% |
| Age 5 to 9 | 6.1% | 4.7% | 6.1% |
| Age 10 to 14 | 7.6% | 7.8% | 6.6% |
| Age 15 to 17 | 2.7% | 4.0% | 3.9% |
| Age 18 to 20 | 2.9% | 7.5% | 4.0% |
| Age 21 to 24 | 4.9% | 2.7% | 5.2% |
| Age 25 to 34 | 11.9% | 10.8% | 13.8% |
| Age 35 to 44 | 14.2% | 10.7% | 12.9% |
| Age 45 to 54 | 8.4% | 13.4% | 12.6% |
| Age 55 to 59 | 6.9% | 4.8% | 6.7% |
| Age 60 to 64 | 8.7% | 3.8% | 6.3% |
| Age 65 to 74 | 4.6% | 9.4% | 9.6% |
| Age 75 to 84 | 3.5% | 5.8% | 4.5% |
| Age 85 and over | 3.5% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hemphill, TX | Zwolle, LA | United States |
| White | 74.4% | 26.7% | 59.4% |
| Black | 9.3% | 40.3% | 12.2% |
| Asian | 5.6% | 0.2% | 5.6% |
| Native American | 0.1% | 8.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.3% | 15.3% | 3.2% |
| Hispanic | 9.3% | 9.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hemphill, TX | Zwolle, LA | United States |
| Married Population | 50.1% | 35.5% | 49.8% |
| Currently Married | 49.6% | 32.2% | 48.0% |
| Married but Separated | 0.6% | 3.3% | 1.8% |
| Single Population | 49.9% | 64.5% | 50.2% |
| Never Married | 22.7% | 43.2% | 33.8% |
| Divorced | 17.4% | 10.4% | 10.8% |
| Widowed | 9.8% | 10.9% | 5.6% |
| space5 | | | |
| Household Size | 2.99 | 2.91 | 2.60 |
| Households | 448 | 647 | 124,010,992 |
| Family Households | 320 | 380 | 80,755,759 |
| Married couple, w/children | 37.5% | 27.1% | 30.5% |
| Married couple, no children | 29.1% | 26.8% | 42.9% |
| Non Family Households | 128 | 267 | 43,255,233 |
| Single householder, w/children | 17.2% | 34.2% | 15.8% |
| Single householder, no children | 16.3% | 11.8% | 10.8% |