| | Big Lake, TX | Iraan, TX | United States |
| Population | 3,000 | 1,387 | 329,725,481 |
| Female Population | 44.1% | 50.0% | 50.5% |
| Male Population | 55.9% | 50.0% | 49.5% |
| Median Age | 29.8 | 28.8 | 38.4 |
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| Population - 2010 | 2,924 | 1,230 | 309,327,143 |
| Population - 2000 | 2,885 | 1,238 | 285,036,114 |
| Population - 1990 | 3,672 | 1,322 | 251,960,433 |
| Pop. 2000 to Now | 16.1% | -1.4% | 15.6% |
| Pop. 1990 to Now | -8.8% | -7.6% | 30.8% |
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| Population Density | 1,256.3 | 2,248.0 | 93.4 |
| Land Area | 2.4 | 0.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Big Lake, TX | Iraan, TX | United States |
| Age 0 to 4 | 10.0% | 13.1% | 5.9% |
| Age 5 to 9 | 9.1% | 5.1% | 6.1% |
| Age 10 to 14 | 8.8% | 6.8% | 6.6% |
| Age 15 to 17 | 4.6% | 6.4% | 3.9% |
| Age 18 to 20 | 4.3% | 6.1% | 4.0% |
| Age 21 to 24 | 6.7% | 8.2% | 5.2% |
| Age 25 to 34 | 14.0% | 9.3% | 13.8% |
| Age 35 to 44 | 12.5% | 12.5% | 12.9% |
| Age 45 to 54 | 10.4% | 10.6% | 12.6% |
| Age 55 to 59 | 6.0% | 8.0% | 6.7% |
| Age 60 to 64 | 3.4% | 4.6% | 6.3% |
| Age 65 to 74 | 7.1% | 9.2% | 9.6% |
| Age 75 to 84 | 2.1% | 0.0% | 4.5% |
| Age 85 and over | 1.0% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Big Lake, TX | Iraan, TX | United States |
| White | 22.1% | 41.6% | 59.4% |
| Black | 2.4% | 0.0% | 12.2% |
| Asian | 2.1% | 3.5% | 5.6% |
| Native American | 0.0% | 8.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.3% | 0.0% | 3.2% |
| Hispanic | 72.2% | 46.1% | 18.4% |
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| Marriage & Family | | | |
| | Big Lake, TX | Iraan, TX | United States |
| Married Population | 65.8% | 52.4% | 49.8% |
| Currently Married | 65.0% | 50.6% | 48.0% |
| Married but Separated | 0.8% | 1.7% | 1.8% |
| Single Population | 34.2% | 47.6% | 50.2% |
| Never Married | 23.3% | 28.6% | 33.8% |
| Divorced | 6.8% | 11.1% | 10.8% |
| Widowed | 4.1% | 8.0% | 5.6% |
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| Household Size | 3.17 | 3.23 | 2.60 |
| Households | 939 | 429 | 124,010,992 |
| Family Households | 745 | 294 | 80,755,759 |
| Married couple, w/children | 51.1% | 39.8% | 30.5% |
| Married couple, no children | 35.0% | 43.9% | 42.9% |
| Non Family Households | 194 | 135 | 43,255,233 |
| Single householder, w/children | 7.7% | 13.6% | 15.8% |
| Single householder, no children | 6.2% | 2.7% | 10.8% |