| | Asherton, TX | Big Wells, TX | United States |
| Population | 698 | 503 | 329,725,481 |
| Female Population | 67.8% | 63.0% | 50.5% |
| Male Population | 32.2% | 37.0% | 49.5% |
| Median Age | 52.1 | 45.6 | 38.4 |
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| Population - 2010 | 1,050 | 700 | 309,327,143 |
| Population - 2000 | 1,342 | 704 | 285,036,114 |
| Population - 1990 | 1,608 | 756 | 251,960,433 |
| Pop. 2000 to Now | -24.7% | -2.0% | 15.6% |
| Pop. 1990 to Now | -37.1% | -8.7% | 30.8% |
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| Population Density | 854.4 | 907.9 | 93.4 |
| Land Area | 0.8 | 0.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Asherton, TX | Big Wells, TX | United States |
| Age 0 to 4 | 3.4% | 4.4% | 5.9% |
| Age 5 to 9 | 5.0% | 6.2% | 6.1% |
| Age 10 to 14 | 5.3% | 5.4% | 6.6% |
| Age 15 to 17 | 1.9% | 3.4% | 3.9% |
| Age 18 to 20 | 3.3% | 4.8% | 4.0% |
| Age 21 to 24 | 3.0% | 3.0% | 5.2% |
| Age 25 to 34 | 5.9% | 12.7% | 13.8% |
| Age 35 to 44 | 16.6% | 8.2% | 12.9% |
| Age 45 to 54 | 11.9% | 15.3% | 12.6% |
| Age 55 to 59 | 8.9% | 8.4% | 6.7% |
| Age 60 to 64 | 5.4% | 4.2% | 6.3% |
| Age 65 to 74 | 20.2% | 15.9% | 9.6% |
| Age 75 to 84 | 7.3% | 8.2% | 4.5% |
| Age 85 and over | 1.9% | 0.2% | 1.9% |
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| Race | | | |
| | Asherton, TX | Big Wells, TX | United States |
| White | 4.7% | 2.0% | 59.4% |
| Black | 0.1% | 0.0% | 12.2% |
| Asian | 0.1% | 2.4% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.7% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 0.0% | 3.2% |
| Hispanic | 94.3% | 95.6% | 18.4% |
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| Marriage & Family | | | |
| | Asherton, TX | Big Wells, TX | United States |
| Married Population | 38.9% | 40.9% | 49.8% |
| Currently Married | 33.4% | 38.8% | 48.0% |
| Married but Separated | 5.5% | 2.1% | 1.8% |
| Single Population | 61.1% | 59.1% | 50.2% |
| Never Married | 29.1% | 24.6% | 33.8% |
| Divorced | 14.5% | 27.9% | 10.8% |
| Widowed | 17.6% | 6.6% | 5.6% |
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| Household Size | 2.16 | 2.63 | 2.60 |
| Households | 322 | 191 | 124,010,992 |
| Family Households | 141 | 122 | 80,755,759 |
| Married couple, w/children | 17.0% | 4.1% | 30.5% |
| Married couple, no children | 45.4% | 41.8% | 42.9% |
| Non Family Households | 181 | 69 | 43,255,233 |
| Single householder, w/children | 19.1% | 37.7% | 15.8% |
| Single householder, no children | 18.4% | 16.4% | 10.8% |