| | Bolivar Peninsula, TX | Port Arthur, TX | United States |
| Population | 2,829 | 55,757 | 329,725,481 |
| Female Population | 53.2% | 50.5% | 50.5% |
| Male Population | 46.8% | 49.5% | 49.5% |
| Median Age | 64.1 | 34.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,895 | 54,500 | 309,327,143 |
| Population - 2000 | 3,853 | 57,755 | 285,036,114 |
| Population - 1990 | 2,809 | 58,724 | 251,960,433 |
| Pop. 2000 to Now | -38.9% | -6.6% | 15.6% |
| Pop. 1990 to Now | -16.2% | -8.2% | 30.8% |
| space4 | | | |
| Population Density | 66.5 | 724.9 | 93.4 |
| Land Area | 42.5 | 76.9 | 3,531,905.4 |
| Water Area | 5.6 | 67.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Bolivar Peninsula, TX | Port Arthur, TX | United States |
| Age 0 to 4 | 1.8% | 7.7% | 5.9% |
| Age 5 to 9 | 3.7% | 7.2% | 6.1% |
| Age 10 to 14 | 1.3% | 7.6% | 6.6% |
| Age 15 to 17 | 0.4% | 4.6% | 3.9% |
| Age 18 to 20 | 2.2% | 4.4% | 4.0% |
| Age 21 to 24 | 0.6% | 5.1% | 5.2% |
| Age 25 to 34 | 6.2% | 13.9% | 13.8% |
| Age 35 to 44 | 3.9% | 11.8% | 12.9% |
| Age 45 to 54 | 5.1% | 12.0% | 12.6% |
| Age 55 to 59 | 10.8% | 6.6% | 6.7% |
| Age 60 to 64 | 20.8% | 6.3% | 6.3% |
| Age 65 to 74 | 33.5% | 7.2% | 9.6% |
| Age 75 to 84 | 8.3% | 4.1% | 4.5% |
| Age 85 and over | 1.4% | 1.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Bolivar Peninsula, TX | Port Arthur, TX | United States |
| White | 84.2% | 17.6% | 59.4% |
| Black | 6.6% | 42.6% | 12.2% |
| Asian | 0.0% | 6.5% | 5.6% |
| Native American | 0.1% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.0% | 0.8% | 3.2% |
| Hispanic | 9.0% | 32.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Bolivar Peninsula, TX | Port Arthur, TX | United States |
| Married Population | 68.4% | 43.0% | 49.8% |
| Currently Married | 66.1% | 40.0% | 48.0% |
| Married but Separated | 2.3% | 3.1% | 1.8% |
| Single Population | 31.6% | 57.0% | 50.2% |
| Never Married | 10.0% | 39.1% | 33.8% |
| Divorced | 13.7% | 11.7% | 10.8% |
| Widowed | 7.9% | 6.1% | 5.6% |
| space5 | | | |
| Household Size | 1.97 | 2.71 | 2.60 |
| Households | 1,438 | 20,396 | 124,010,992 |
| Family Households | 955 | 12,838 | 80,755,759 |
| Married couple, w/children | 8.7% | 27.4% | 30.5% |
| Married couple, no children | 78.8% | 30.8% | 42.9% |
| Non Family Households | 483 | 7,558 | 43,255,233 |
| Single householder, w/children | 4.8% | 27.1% | 15.8% |
| Single householder, no children | 7.6% | 14.7% | 10.8% |