| | Iola, TX | Anderson, TX | United States |
| Population | 259 | 301 | 329,725,481 |
| Female Population | 55.2% | 41.9% | 50.5% |
| Male Population | 44.8% | 58.1% | 49.5% |
| Median Age | 55.9 | 31.4 | 38.4 |
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| Population - 2010 | 401 | 222 | 309,327,143 |
| Population - 2000 | 325 | 257 | 285,036,114 |
| Population - 1990 | 266 | 139 | 251,960,433 |
| Pop. 2000 to Now | 33.2% | -3.5% | 15.6% |
| Pop. 1990 to Now | 62.8% | 78.4% | 30.8% |
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| Population Density | 251.2 | 587.9 | 93.4 |
| Land Area | 1.0 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Iola, TX | Anderson, TX | United States |
| Age 0 to 4 | 0.0% | 13.0% | 5.9% |
| Age 5 to 9 | 0.8% | 7.3% | 6.1% |
| Age 10 to 14 | 5.4% | 9.0% | 6.6% |
| Age 15 to 17 | 1.9% | 5.0% | 3.9% |
| Age 18 to 20 | 0.0% | 3.0% | 4.0% |
| Age 21 to 24 | 3.9% | 1.0% | 5.2% |
| Age 25 to 34 | 12.4% | 15.9% | 13.8% |
| Age 35 to 44 | 11.2% | 15.9% | 12.9% |
| Age 45 to 54 | 11.2% | 4.7% | 12.6% |
| Age 55 to 59 | 13.9% | 9.3% | 6.7% |
| Age 60 to 64 | 13.5% | 7.3% | 6.3% |
| Age 65 to 74 | 21.2% | 6.0% | 9.6% |
| Age 75 to 84 | 3.1% | 2.7% | 4.5% |
| Age 85 and over | 1.5% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Iola, TX | Anderson, TX | United States |
| White | 91.5% | 49.5% | 59.4% |
| Black | 0.8% | 31.6% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.8% | 2.3% | 3.2% |
| Hispanic | 7.0% | 16.6% | 18.4% |
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| Marriage & Family | | | |
| | Iola, TX | Anderson, TX | United States |
| Married Population | 56.8% | 51.6% | 49.8% |
| Currently Married | 53.9% | 47.4% | 48.0% |
| Married but Separated | 2.9% | 4.2% | 1.8% |
| Single Population | 43.2% | 48.4% | 50.2% |
| Never Married | 21.8% | 38.5% | 33.8% |
| Divorced | 10.7% | 6.6% | 10.8% |
| Widowed | 10.7% | 3.3% | 5.6% |
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| Household Size | 2.16 | 3.24 | 2.60 |
| Households | 120 | 93 | 124,010,992 |
| Family Households | 77 | 66 | 80,755,759 |
| Married couple, w/children | 16.9% | 39.4% | 30.5% |
| Married couple, no children | 55.8% | 33.3% | 42.9% |
| Non Family Households | 43 | 27 | 43,255,233 |
| Single householder, w/children | 7.8% | 21.2% | 15.8% |
| Single householder, no children | 19.5% | 6.1% | 10.8% |