| | Decherd, TN | San Angelo, TX | United States |
| Population | 2,798 | 99,401 | 329,725,481 |
| Female Population | 56.3% | 49.9% | 50.5% |
| Male Population | 43.8% | 50.1% | 49.5% |
| Median Age | 39.3 | 34.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,346 | 93,627 | 309,327,143 |
| Population - 2000 | 2,246 | 88,439 | 285,036,114 |
| Population - 1990 | 2,196 | 84,474 | 251,960,433 |
| Pop. 2000 to Now | 5.6% | 14.9% | 15.6% |
| Pop. 1990 to Now | 8.0% | 20.3% | 30.8% |
| space4 | | | |
| Population Density | 583.5 | 1,657.9 | 93.4 |
| Land Area | 4.8 | 60.0 | 3,531,905.4 |
| Water Area | 0.0 | 2.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Decherd, TN | San Angelo, TX | United States |
| Age 0 to 4 | 5.3% | 6.4% | 5.9% |
| Age 5 to 9 | 6.4% | 5.8% | 6.1% |
| Age 10 to 14 | 8.4% | 7.1% | 6.6% |
| Age 15 to 17 | 3.4% | 3.9% | 3.9% |
| Age 18 to 20 | 2.4% | 6.6% | 4.0% |
| Age 21 to 24 | 3.2% | 6.3% | 5.2% |
| Age 25 to 34 | 12.8% | 15.0% | 13.8% |
| Age 35 to 44 | 22.2% | 12.2% | 12.9% |
| Age 45 to 54 | 12.0% | 10.3% | 12.6% |
| Age 55 to 59 | 5.4% | 5.7% | 6.7% |
| Age 60 to 64 | 5.2% | 5.3% | 6.3% |
| Age 65 to 74 | 7.3% | 8.8% | 9.6% |
| Age 75 to 84 | 4.3% | 4.4% | 4.5% |
| Age 85 and over | 1.9% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Decherd, TN | San Angelo, TX | United States |
| White | 77.6% | 48.1% | 59.4% |
| Black | 15.1% | 4.4% | 12.2% |
| Asian | 1.6% | 1.4% | 5.6% |
| Native American | 0.1% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 3.3% | 2.0% | 3.2% |
| Hispanic | 2.3% | 43.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Decherd, TN | San Angelo, TX | United States |
| Married Population | 38.9% | 47.1% | 49.8% |
| Currently Married | 37.2% | 45.3% | 48.0% |
| Married but Separated | 1.7% | 1.8% | 1.8% |
| Single Population | 61.1% | 52.9% | 50.2% |
| Never Married | 25.9% | 34.7% | 33.8% |
| Divorced | 26.9% | 12.7% | 10.8% |
| Widowed | 8.3% | 5.5% | 5.6% |
| space5 | | | |
| Household Size | 2.06 | 2.46 | 2.60 |
| Households | 1,356 | 38,086 | 124,010,992 |
| Family Households | 640 | 23,356 | 80,755,759 |
| Married couple, w/children | 28.0% | 31.6% | 30.5% |
| Married couple, no children | 33.4% | 41.1% | 42.9% |
| Non Family Households | 716 | 14,730 | 43,255,233 |
| Single householder, w/children | 32.7% | 17.4% | 15.8% |
| Single householder, no children | 5.9% | 9.9% | 10.8% |