| | Zapata, TX | Beeville, TX | United States |
| Population | 4,928 | 13,780 | 329,725,481 |
| Female Population | 49.9% | 51.7% | 50.5% |
| Male Population | 50.1% | 48.4% | 49.5% |
| Median Age | 34.2 | 27.9 | 38.4 |
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| Population - 2010 | 5,947 | 14,205 | 309,327,143 |
| Population - 2000 | 4,856 | 13,129 | 285,036,114 |
| Population - 1990 | 7,119 | 13,547 | 251,960,433 |
| Pop. 2000 to Now | -10.3% | 7.9% | 15.6% |
| Pop. 1990 to Now | -38.8% | 4.6% | 30.8% |
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| Population Density | 644.9 | 2,232.3 | 93.4 |
| Land Area | 7.6 | 6.2 | 3,531,905.4 |
| Water Area | 2.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Zapata, TX | Beeville, TX | United States |
| Age 0 to 4 | 9.4% | 7.9% | 5.9% |
| Age 5 to 9 | 9.4% | 9.2% | 6.1% |
| Age 10 to 14 | 6.1% | 9.2% | 6.6% |
| Age 15 to 17 | 3.8% | 3.8% | 3.9% |
| Age 18 to 20 | 2.1% | 5.6% | 4.0% |
| Age 21 to 24 | 6.9% | 7.3% | 5.2% |
| Age 25 to 34 | 13.4% | 16.5% | 13.8% |
| Age 35 to 44 | 9.9% | 10.8% | 12.9% |
| Age 45 to 54 | 9.4% | 7.6% | 12.6% |
| Age 55 to 59 | 5.5% | 4.1% | 6.7% |
| Age 60 to 64 | 3.4% | 5.3% | 6.3% |
| Age 65 to 74 | 11.7% | 7.6% | 9.6% |
| Age 75 to 84 | 6.0% | 3.7% | 4.5% |
| Age 85 and over | 2.9% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Zapata, TX | Beeville, TX | United States |
| White | 3.9% | 23.5% | 59.4% |
| Black | 0.0% | 1.8% | 12.2% |
| Asian | 0.0% | 0.3% | 5.6% |
| Native American | 0.0% | 0.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 1.2% | 0.3% | 3.2% |
| Hispanic | 94.9% | 73.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Zapata, TX | Beeville, TX | United States |
| Married Population | 36.7% | 41.2% | 49.8% |
| Currently Married | 35.0% | 38.6% | 48.0% |
| Married but Separated | 1.7% | 2.6% | 1.8% |
| Single Population | 63.3% | 58.8% | 50.2% |
| Never Married | 36.1% | 39.8% | 33.8% |
| Divorced | 15.2% | 13.4% | 10.8% |
| Widowed | 12.0% | 5.6% | 5.6% |
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| Household Size | 2.71 | 2.77 | 2.60 |
| Households | 1,809 | 4,880 | 124,010,992 |
| Family Households | 951 | 3,027 | 80,755,759 |
| Married couple, w/children | 27.6% | 37.6% | 30.5% |
| Married couple, no children | 17.9% | 24.5% | 42.9% |
| Non Family Households | 858 | 1,853 | 43,255,233 |
| Single householder, w/children | 31.5% | 24.6% | 15.8% |
| Single householder, no children | 23.0% | 13.3% | 10.8% |