| Statistic | Cottage Grove | Tennessee | National |
| Population | 59 | 6,833,174 | 328,239,523 |
| Population density (sq mi) | 345 | 167 | 91 |
| Median age | 47.1 | 38.5 | 37.7 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 61% | 57% | 55% |
| Families w/ Kids under 18 | 46% | 41% | 43% |
| Speak English | 100% | 93% | 79% |
| Speak Spanish | 0% | 4% | 13% |
| Race | Cottage Grove | Tennessee | National |
| White | 96.61% | 77.84% | 73.35% |
| Black | 0.00% | 16.81% | 12.63% |
| Asian | 0.00% | 1.61% | 5.22% |
| American Indian | 0.00% | 0.29% | 0.82% |
| Native Hawaiian | 0.00% | 0.05% | 0.18% |
| Mixed race | 3.39% | 2.03% | 3.06% |
| Other race | 0.00% | 1.38% | 4.75% |
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