| | Celina, TN | Gainesboro, TN | United States |
| Population | 1,678 | 1,098 | 329,725,481 |
| Female Population | 53.7% | 52.7% | 50.5% |
| Male Population | 46.3% | 47.3% | 49.5% |
| Median Age | 49.8 | 45.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,497 | 955 | 309,327,143 |
| Population - 2000 | 1,379 | 879 | 285,036,114 |
| Population - 1990 | 1,493 | 1,002 | 251,960,433 |
| Pop. 2000 to Now | 2.0% | 8.2% | 15.6% |
| Pop. 1990 to Now | -5.8% | -5.1% | 30.8% |
| space4 | | | |
| Population Density | 910.5 | 705.2 | 93.4 |
| Land Area | 1.8 | 1.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Celina, TN | Gainesboro, TN | United States |
| Age 0 to 4 | 9.6% | 4.3% | 5.9% |
| Age 5 to 9 | 2.0% | 5.6% | 6.1% |
| Age 10 to 14 | 6.9% | 5.5% | 6.6% |
| Age 15 to 17 | 3.3% | 1.1% | 3.9% |
| Age 18 to 20 | 4.1% | 5.6% | 4.0% |
| Age 21 to 24 | 2.7% | 6.8% | 5.2% |
| Age 25 to 34 | 4.2% | 8.8% | 13.8% |
| Age 35 to 44 | 11.8% | 11.5% | 12.9% |
| Age 45 to 54 | 13.9% | 18.9% | 12.6% |
| Age 55 to 59 | 10.5% | 3.2% | 6.7% |
| Age 60 to 64 | 3.3% | 5.5% | 6.3% |
| Age 65 to 74 | 17.7% | 15.0% | 9.6% |
| Age 75 to 84 | 6.3% | 5.2% | 4.5% |
| Age 85 and over | 3.8% | 3.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Celina, TN | Gainesboro, TN | United States |
| White | 85.1% | 89.0% | 59.4% |
| Black | 8.9% | 2.6% | 12.2% |
| Asian | 2.6% | 0.0% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.0% | 5.6% | 3.2% |
| Hispanic | 0.4% | 2.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Celina, TN | Gainesboro, TN | United States |
| Married Population | 40.9% | 39.2% | 49.8% |
| Currently Married | 39.9% | 37.0% | 48.0% |
| Married but Separated | 1.0% | 2.3% | 1.8% |
| Single Population | 59.1% | 60.8% | 50.2% |
| Never Married | 27.4% | 27.3% | 33.8% |
| Divorced | 18.8% | 19.4% | 10.8% |
| Widowed | 12.9% | 14.1% | 5.6% |
| space5 | | | |
| Household Size | 2.51 | 2.74 | 2.60 |
| Households | 634 | 328 | 124,010,992 |
| Family Households | 390 | 192 | 80,755,759 |
| Married couple, w/children | 31.8% | 27.1% | 30.5% |
| Married couple, no children | 38.5% | 49.0% | 42.9% |
| Non Family Households | 244 | 136 | 43,255,233 |
| Single householder, w/children | 18.5% | 15.1% | 15.8% |
| Single householder, no children | 11.3% | 8.9% | 10.8% |