| | Arcadia, NY | Gallatin, TN | United States |
| Population | 13,715 | 43,306 | 329,725,481 |
| Female Population | 48.8% | 50.1% | 50.5% |
| Male Population | 51.2% | 49.9% | 49.5% |
| Median Age | 42.4 | 38.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 14,244 | 30,514 | 309,327,143 |
| Population - 2000 | 14,889 | 23,230 | 285,036,114 |
| Population - 1990 | 14,855 | 18,794 | 251,960,433 |
| Pop. 2000 to Now | -9.8% | 90.9% | 15.6% |
| Pop. 1990 to Now | -9.6% | 135.9% | 30.8% |
| space4 | | | |
| Population Density | 263.6 | 1,363.0 | 93.4 |
| Land Area | 52.0 | 31.8 | 3,531,905.4 |
| Water Area | 0.1 | 0.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Arcadia, NY | Gallatin, TN | United States |
| Age 0 to 4 | 5.9% | 5.8% | 5.9% |
| Age 5 to 9 | 6.4% | 8.0% | 6.1% |
| Age 10 to 14 | 5.1% | 6.0% | 6.6% |
| Age 15 to 17 | 3.5% | 2.9% | 3.9% |
| Age 18 to 20 | 3.7% | 3.7% | 4.0% |
| Age 21 to 24 | 4.3% | 4.4% | 5.2% |
| Age 25 to 34 | 13.2% | 14.5% | 13.8% |
| Age 35 to 44 | 10.9% | 13.1% | 12.9% |
| Age 45 to 54 | 10.9% | 13.6% | 12.6% |
| Age 55 to 59 | 8.7% | 6.5% | 6.7% |
| Age 60 to 64 | 7.4% | 5.3% | 6.3% |
| Age 65 to 74 | 12.0% | 9.0% | 9.6% |
| Age 75 to 84 | 5.6% | 5.5% | 4.5% |
| Age 85 and over | 2.5% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Arcadia, NY | Gallatin, TN | United States |
| White | 81.0% | 69.9% | 59.4% |
| Black | 2.5% | 13.9% | 12.2% |
| Asian | 1.0% | 2.8% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 4.3% | 4.6% | 3.2% |
| Hispanic | 11.2% | 8.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Arcadia, NY | Gallatin, TN | United States |
| Married Population | 47.2% | 52.0% | 49.8% |
| Currently Married | 44.2% | 51.2% | 48.0% |
| Married but Separated | 3.0% | 0.8% | 1.8% |
| Single Population | 52.8% | 48.0% | 50.2% |
| Never Married | 31.3% | 29.0% | 33.8% |
| Divorced | 15.6% | 13.0% | 10.8% |
| Widowed | 5.9% | 6.0% | 5.6% |
| space5 | | | |
| Household Size | 2.33 | 2.47 | 2.60 |
| Households | 5,684 | 17,127 | 124,010,992 |
| Family Households | 3,345 | 11,622 | 80,755,759 |
| Married couple, w/children | 30.5% | 26.9% | 30.5% |
| Married couple, no children | 41.1% | 45.1% | 42.9% |
| Non Family Households | 2,339 | 5,505 | 43,255,233 |
| Single householder, w/children | 18.5% | 17.7% | 15.8% |
| Single householder, no children | 9.9% | 10.2% | 10.8% |