| | Gun Barrel City, TX | Kemp, TX | United States |
| Population | 6,152 | 1,357 | 329,725,481 |
| Female Population | 51.2% | 52.5% | 50.5% |
| Male Population | 48.8% | 47.5% | 49.5% |
| Median Age | 50.5 | 40 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,668 | 1,050 | 309,327,143 |
| Population - 2000 | 5,145 | 1,133 | 285,036,114 |
| Population - 1990 | 3,526 | 1,184 | 251,960,433 |
| Pop. 2000 to Now | 22.6% | 10.4% | 15.6% |
| Pop. 1990 to Now | 78.9% | 5.7% | 30.8% |
| space4 | | | |
| Population Density | 983.7 | 750.1 | 93.4 |
| Land Area | 6.3 | 1.8 | 3,531,905.4 |
| Water Area | 0.4 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gun Barrel City, TX | Kemp, TX | United States |
| Age 0 to 4 | 3.6% | 6.2% | 5.9% |
| Age 5 to 9 | 2.7% | 8.3% | 6.1% |
| Age 10 to 14 | 6.6% | 5.8% | 6.6% |
| Age 15 to 17 | 4.1% | 7.3% | 3.9% |
| Age 18 to 20 | 3.6% | 0.9% | 4.0% |
| Age 21 to 24 | 4.0% | 2.4% | 5.2% |
| Age 25 to 34 | 9.0% | 13.4% | 13.8% |
| Age 35 to 44 | 12.1% | 11.0% | 12.9% |
| Age 45 to 54 | 10.9% | 15.2% | 12.6% |
| Age 55 to 59 | 7.9% | 6.4% | 6.7% |
| Age 60 to 64 | 11.9% | 3.8% | 6.3% |
| Age 65 to 74 | 13.1% | 6.6% | 9.6% |
| Age 75 to 84 | 8.0% | 11.2% | 4.5% |
| Age 85 and over | 2.5% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gun Barrel City, TX | Kemp, TX | United States |
| White | 93.8% | 77.5% | 59.4% |
| Black | 0.7% | 2.5% | 12.2% |
| Asian | 0.0% | 0.4% | 5.6% |
| Native American | 0.5% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.3% | 0.1% | 3.2% |
| Hispanic | 4.8% | 19.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gun Barrel City, TX | Kemp, TX | United States |
| Married Population | 50.4% | 57.1% | 49.8% |
| Currently Married | 49.7% | 52.1% | 48.0% |
| Married but Separated | 0.7% | 5.0% | 1.8% |
| Single Population | 49.6% | 42.9% | 50.2% |
| Never Married | 24.5% | 22.6% | 33.8% |
| Divorced | 17.4% | 11.1% | 10.8% |
| Widowed | 7.7% | 9.2% | 5.6% |
| space5 | | | |
| Household Size | 2.37 | 2.58 | 2.60 |
| Households | 2,594 | 492 | 124,010,992 |
| Family Households | 1,508 | 302 | 80,755,759 |
| Married couple, w/children | 18.6% | 60.9% | 30.5% |
| Married couple, no children | 64.0% | 24.5% | 42.9% |
| Non Family Households | 1,086 | 190 | 43,255,233 |
| Single householder, w/children | 15.4% | 8.6% | 15.8% |
| Single householder, no children | 2.1% | 6.0% | 10.8% |