| | Tullahoma, TN | Fayetteville, TN | United States |
| Population | 20,599 | 6,988 | 329,725,481 |
| Female Population | 51.3% | 54.9% | 50.5% |
| Male Population | 48.7% | 45.1% | 49.5% |
| Median Age | 40.1 | 39.6 | 38.4 |
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| Population - 2010 | 18,598 | 6,780 | 309,327,143 |
| Population - 2000 | 17,994 | 6,994 | 285,036,114 |
| Population - 1990 | 16,761 | 6,921 | 251,960,433 |
| Pop. 2000 to Now | 10.0% | 0.2% | 15.6% |
| Pop. 1990 to Now | 18.1% | 1.3% | 30.8% |
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| Population Density | 878.6 | 726.3 | 93.4 |
| Land Area | 23.4 | 9.6 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Tullahoma, TN | Fayetteville, TN | United States |
| Age 0 to 4 | 7.5% | 5.8% | 5.9% |
| Age 5 to 9 | 7.2% | 3.8% | 6.1% |
| Age 10 to 14 | 5.9% | 8.5% | 6.6% |
| Age 15 to 17 | 4.3% | 3.9% | 3.9% |
| Age 18 to 20 | 2.0% | 3.1% | 4.0% |
| Age 21 to 24 | 3.6% | 4.8% | 5.2% |
| Age 25 to 34 | 13.1% | 15.0% | 13.8% |
| Age 35 to 44 | 12.5% | 10.8% | 12.9% |
| Age 45 to 54 | 12.6% | 10.4% | 12.6% |
| Age 55 to 59 | 5.7% | 9.2% | 6.7% |
| Age 60 to 64 | 6.6% | 5.4% | 6.3% |
| Age 65 to 74 | 10.8% | 9.4% | 9.6% |
| Age 75 to 84 | 5.4% | 6.4% | 4.5% |
| Age 85 and over | 2.8% | 3.3% | 1.9% |
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| Race | | | |
| | Tullahoma, TN | Fayetteville, TN | United States |
| White | 85.8% | 69.6% | 59.4% |
| Black | 5.2% | 23.9% | 12.2% |
| Asian | 1.6% | 0.0% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 2.7% | 4.9% | 3.2% |
| Hispanic | 4.5% | 1.6% | 18.4% |
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| Marriage & Family | | | |
| | Tullahoma, TN | Fayetteville, TN | United States |
| Married Population | 53.0% | 38.1% | 49.8% |
| Currently Married | 51.1% | 35.8% | 48.0% |
| Married but Separated | 1.9% | 2.3% | 1.8% |
| Single Population | 47.0% | 61.9% | 50.2% |
| Never Married | 23.4% | 33.6% | 33.8% |
| Divorced | 13.0% | 17.6% | 10.8% |
| Widowed | 10.7% | 10.7% | 5.6% |
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| Household Size | 2.45 | 2.19 | 2.60 |
| Households | 8,338 | 3,016 | 124,010,992 |
| Family Households | 5,348 | 1,513 | 80,755,759 |
| Married couple, w/children | 28.2% | 18.8% | 30.5% |
| Married couple, no children | 44.9% | 41.6% | 42.9% |
| Non Family Households | 2,990 | 1,503 | 43,255,233 |
| Single householder, w/children | 19.3% | 27.7% | 15.8% |
| Single householder, no children | 7.6% | 11.8% | 10.8% |