| | Houston, MS | Eupora, MS | United States |
| Population | 3,763 | 2,628 | 329,725,481 |
| Female Population | 58.9% | 50.1% | 50.5% |
| Male Population | 41.1% | 49.9% | 49.5% |
| Median Age | 46.4 | 36.4 | 38.4 |
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| Population - 2010 | 3,623 | 2,189 | 309,327,143 |
| Population - 2000 | 4,079 | 2,326 | 285,036,114 |
| Population - 1990 | 3,903 | 2,145 | 251,960,433 |
| Pop. 2000 to Now | -17.3% | -14.1% | 15.6% |
| Pop. 1990 to Now | -13.5% | -6.9% | 30.8% |
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| Population Density | 510.1 | 790.9 | 93.4 |
| Land Area | 7.4 | 3.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Houston, MS | Eupora, MS | United States |
| Age 0 to 4 | 2.0% | 6.7% | 5.9% |
| Age 5 to 9 | 8.7% | 9.1% | 6.1% |
| Age 10 to 14 | 4.5% | 7.6% | 6.6% |
| Age 15 to 17 | 2.3% | 4.8% | 3.9% |
| Age 18 to 20 | 5.9% | 6.7% | 4.0% |
| Age 21 to 24 | 4.4% | 2.0% | 5.2% |
| Age 25 to 34 | 11.5% | 10.4% | 13.8% |
| Age 35 to 44 | 9.1% | 10.1% | 12.9% |
| Age 45 to 54 | 8.5% | 12.7% | 12.6% |
| Age 55 to 59 | 5.5% | 4.7% | 6.7% |
| Age 60 to 64 | 8.3% | 6.0% | 6.3% |
| Age 65 to 74 | 17.7% | 11.0% | 9.6% |
| Age 75 to 84 | 9.2% | 7.6% | 4.5% |
| Age 85 and over | 2.3% | 0.8% | 1.9% |
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| Race | | | |
| | Houston, MS | Eupora, MS | United States |
| White | 45.4% | 48.1% | 59.4% |
| Black | 43.1% | 50.3% | 12.2% |
| Asian | 0.5% | 1.4% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.2% | 0.0% | 3.2% |
| Hispanic | 7.6% | 0.2% | 18.4% |
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| Marriage & Family | | | |
| | Houston, MS | Eupora, MS | United States |
| Married Population | 44.8% | 52.3% | 49.8% |
| Currently Married | 41.4% | 48.9% | 48.0% |
| Married but Separated | 3.4% | 3.4% | 1.8% |
| Single Population | 55.2% | 47.7% | 50.2% |
| Never Married | 34.1% | 31.9% | 33.8% |
| Divorced | 12.1% | 8.5% | 10.8% |
| Widowed | 9.1% | 7.2% | 5.6% |
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| Household Size | 2.03 | 2.71 | 2.60 |
| Households | 1,824 | 951 | 124,010,992 |
| Family Households | 1,185 | 614 | 80,755,759 |
| Married couple, w/children | 12.5% | 36.8% | 30.5% |
| Married couple, no children | 35.5% | 25.4% | 42.9% |
| Non Family Households | 639 | 337 | 43,255,233 |
| Single householder, w/children | 24.7% | 26.5% | 15.8% |
| Single householder, no children | 27.3% | 11.2% | 10.8% |