| | Alexandria, TN | Greensburg, IN | United States |
| Population | 936 | 11,573 | 329,725,481 |
| Female Population | 51.8% | 49.9% | 50.5% |
| Male Population | 48.2% | 50.2% | 49.5% |
| Median Age | 33.5 | 39.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 973 | 11,540 | 309,327,143 |
| Population - 2000 | 814 | 10,260 | 285,036,114 |
| Population - 1990 | 730 | 9,286 | 251,960,433 |
| Pop. 2000 to Now | 25.3% | 16.8% | 15.6% |
| Pop. 1990 to Now | 39.7% | 29.1% | 30.8% |
| space4 | | | |
| Population Density | 462.2 | 1,248.7 | 93.4 |
| Land Area | 2.0 | 9.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Alexandria, TN | Greensburg, IN | United States |
| Age 0 to 4 | 6.1% | 6.4% | 5.9% |
| Age 5 to 9 | 5.8% | 5.1% | 6.1% |
| Age 10 to 14 | 9.8% | 7.0% | 6.6% |
| Age 15 to 17 | 6.5% | 2.7% | 3.9% |
| Age 18 to 20 | 1.5% | 3.8% | 4.0% |
| Age 21 to 24 | 5.6% | 7.3% | 5.2% |
| Age 25 to 34 | 14.7% | 13.1% | 13.8% |
| Age 35 to 44 | 12.3% | 11.6% | 12.9% |
| Age 45 to 54 | 11.1% | 12.4% | 12.6% |
| Age 55 to 59 | 4.3% | 8.3% | 6.7% |
| Age 60 to 64 | 5.1% | 4.9% | 6.3% |
| Age 65 to 74 | 11.8% | 9.7% | 9.6% |
| Age 75 to 84 | 4.5% | 5.5% | 4.5% |
| Age 85 and over | 1.0% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Alexandria, TN | Greensburg, IN | United States |
| White | 86.3% | 89.7% | 59.4% |
| Black | 7.3% | 0.3% | 12.2% |
| Asian | 1.1% | 2.6% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.5% | 0.9% | 0.4% |
| Two or More Races | 3.1% | 2.1% | 3.2% |
| Hispanic | 0.7% | 4.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Alexandria, TN | Greensburg, IN | United States |
| Married Population | 44.1% | 46.4% | 49.8% |
| Currently Married | 42.4% | 45.7% | 48.0% |
| Married but Separated | 1.6% | 0.7% | 1.8% |
| Single Population | 55.9% | 53.6% | 50.2% |
| Never Married | 26.6% | 31.2% | 33.8% |
| Divorced | 15.6% | 14.2% | 10.8% |
| Widowed | 13.8% | 8.2% | 5.6% |
| space5 | | | |
| Household Size | 2.36 | 2.31 | 2.60 |
| Households | 397 | 4,858 | 124,010,992 |
| Family Households | 254 | 2,692 | 80,755,759 |
| Married couple, w/children | 24.8% | 36.1% | 30.5% |
| Married couple, no children | 29.9% | 40.7% | 42.9% |
| Non Family Households | 143 | 2,166 | 43,255,233 |
| Single householder, w/children | 26.0% | 10.4% | 15.8% |
| Single householder, no children | 19.3% | 12.8% | 10.8% |