| | Henrietta, TX | Petrolia, TX | United States |
| Population | 3,080 | 380 | 329,725,481 |
| Female Population | 51.2% | 50.5% | 50.5% |
| Male Population | 48.8% | 49.5% | 49.5% |
| Median Age | 42.1 | 55.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,133 | 685 | 309,327,143 |
| Population - 2000 | 3,264 | 782 | 285,036,114 |
| Population - 1990 | 2,896 | 762 | 251,960,433 |
| Pop. 2000 to Now | -4.0% | -14.2% | 15.6% |
| Pop. 1990 to Now | 8.2% | -11.9% | 30.8% |
| space4 | | | |
| Population Density | 606.9 | 514.2 | 93.4 |
| Land Area | 5.1 | 0.7 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Henrietta, TX | Petrolia, TX | United States |
| Age 0 to 4 | 3.5% | 6.3% | 5.9% |
| Age 5 to 9 | 5.0% | 0.0% | 6.1% |
| Age 10 to 14 | 10.1% | 7.4% | 6.6% |
| Age 15 to 17 | 5.6% | 0.0% | 3.9% |
| Age 18 to 20 | 3.8% | 1.6% | 4.0% |
| Age 21 to 24 | 4.8% | 4.5% | 5.2% |
| Age 25 to 34 | 7.4% | 1.8% | 13.8% |
| Age 35 to 44 | 12.9% | 9.2% | 12.9% |
| Age 45 to 54 | 11.2% | 17.6% | 12.6% |
| Age 55 to 59 | 6.4% | 7.1% | 6.7% |
| Age 60 to 64 | 6.6% | 7.1% | 6.3% |
| Age 65 to 74 | 12.9% | 13.9% | 9.6% |
| Age 75 to 84 | 4.4% | 18.4% | 4.5% |
| Age 85 and over | 5.4% | 5.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Henrietta, TX | Petrolia, TX | United States |
| White | 92.6% | 91.8% | 59.4% |
| Black | 0.2% | 0.0% | 12.2% |
| Asian | 1.4% | 0.0% | 5.6% |
| Native American | 1.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.2% | 5.3% | 3.2% |
| Hispanic | 2.5% | 2.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Henrietta, TX | Petrolia, TX | United States |
| Married Population | 62.6% | 48.5% | 49.8% |
| Currently Married | 60.7% | 45.1% | 48.0% |
| Married but Separated | 2.0% | 3.4% | 1.8% |
| Single Population | 37.4% | 51.5% | 50.2% |
| Never Married | 20.7% | 12.2% | 33.8% |
| Divorced | 8.7% | 18.0% | 10.8% |
| Widowed | 8.0% | 21.3% | 5.6% |
| space5 | | | |
| Household Size | 2.56 | 1.93 | 2.60 |
| Households | 1,180 | 197 | 124,010,992 |
| Family Households | 859 | 117 | 80,755,759 |
| Married couple, w/children | 31.9% | 17.9% | 30.5% |
| Married couple, no children | 51.9% | 48.7% | 42.9% |
| Non Family Households | 321 | 80 | 43,255,233 |
| Single householder, w/children | 14.8% | 17.9% | 15.8% |
| Single householder, no children | 1.4% | 15.4% | 10.8% |