| | Obion, TN | Brownsville, TN | United States |
| Population | 1,202 | 9,807 | 329,725,481 |
| Female Population | 49.0% | 52.8% | 50.5% |
| Male Population | 51.0% | 47.2% | 49.5% |
| Median Age | 38.1 | 39.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,125 | 10,340 | 309,327,143 |
| Population - 2000 | 1,134 | 10,748 | 285,036,114 |
| Population - 1990 | 1,241 | 10,019 | 251,960,433 |
| Pop. 2000 to Now | -8.0% | -14.1% | 15.6% |
| Pop. 1990 to Now | -16.0% | -7.9% | 30.8% |
| space4 | | | |
| Population Density | 931.8 | 994.7 | 93.4 |
| Land Area | 1.3 | 9.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Obion, TN | Brownsville, TN | United States |
| Age 0 to 4 | 5.2% | 6.6% | 5.9% |
| Age 5 to 9 | 7.6% | 6.6% | 6.1% |
| Age 10 to 14 | 9.2% | 6.9% | 6.6% |
| Age 15 to 17 | 4.4% | 5.1% | 3.9% |
| Age 18 to 20 | 1.2% | 3.9% | 4.0% |
| Age 21 to 24 | 3.7% | 3.4% | 5.2% |
| Age 25 to 34 | 15.7% | 12.8% | 13.8% |
| Age 35 to 44 | 8.7% | 11.7% | 12.9% |
| Age 45 to 54 | 11.6% | 12.7% | 12.6% |
| Age 55 to 59 | 6.3% | 5.1% | 6.7% |
| Age 60 to 64 | 8.1% | 8.1% | 6.3% |
| Age 65 to 74 | 10.5% | 9.6% | 9.6% |
| Age 75 to 84 | 3.7% | 4.9% | 4.5% |
| Age 85 and over | 4.3% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Obion, TN | Brownsville, TN | United States |
| White | 82.2% | 27.2% | 59.4% |
| Black | 5.7% | 65.8% | 12.2% |
| Asian | 0.4% | 0.0% | 5.6% |
| Native American | 0.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.6% | 0.4% |
| Two or More Races | 6.1% | 1.3% | 3.2% |
| Hispanic | 4.6% | 5.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Obion, TN | Brownsville, TN | United States |
| Married Population | 36.2% | 37.4% | 49.8% |
| Currently Married | 34.2% | 33.1% | 48.0% |
| Married but Separated | 2.0% | 4.4% | 1.8% |
| Single Population | 63.8% | 62.6% | 50.2% |
| Never Married | 27.1% | 39.0% | 33.8% |
| Divorced | 23.9% | 15.2% | 10.8% |
| Widowed | 12.9% | 8.3% | 5.6% |
| space5 | | | |
| Household Size | 2.46 | 2.51 | 2.60 |
| Households | 488 | 3,869 | 124,010,992 |
| Family Households | 254 | 2,374 | 80,755,759 |
| Married couple, w/children | 27.2% | 15.6% | 30.5% |
| Married couple, no children | 28.3% | 34.8% | 42.9% |
| Non Family Households | 234 | 1,495 | 43,255,233 |
| Single householder, w/children | 26.8% | 32.6% | 15.8% |
| Single householder, no children | 17.7% | 17.0% | 10.8% |