| | Downing, MO | Mexico, ME | United States |
| Population | 461 | 2,739 | 329,725,481 |
| Female Population | 52.7% | 52.7% | 50.5% |
| Male Population | 47.3% | 47.3% | 49.5% |
| Median Age | 32 | 48.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 336 | 2,677 | 309,327,143 |
| Population - 2000 | 396 | 2,959 | 285,036,114 |
| Population - 1990 | 359 | 3,344 | 251,960,433 |
| Pop. 2000 to Now | -13.9% | -11.0% | 15.6% |
| Pop. 1990 to Now | -5.0% | -21.2% | 30.8% |
| space4 | | | |
| Population Density | 699.5 | 117.3 | 93.4 |
| Land Area | 0.7 | 23.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Downing, MO | Mexico, ME | United States |
| Age 0 to 4 | 3.7% | 2.2% | 5.9% |
| Age 5 to 9 | 9.8% | 8.5% | 6.1% |
| Age 10 to 14 | 5.0% | 2.7% | 6.6% |
| Age 15 to 17 | 5.2% | 2.6% | 3.9% |
| Age 18 to 20 | 7.8% | 2.3% | 4.0% |
| Age 21 to 24 | 1.1% | 1.1% | 5.2% |
| Age 25 to 34 | 22.8% | 11.7% | 13.8% |
| Age 35 to 44 | 4.1% | 13.1% | 12.9% |
| Age 45 to 54 | 16.7% | 10.4% | 12.6% |
| Age 55 to 59 | 2.6% | 5.8% | 6.7% |
| Age 60 to 64 | 4.1% | 13.7% | 6.3% |
| Age 65 to 74 | 7.4% | 16.2% | 9.6% |
| Age 75 to 84 | 8.9% | 6.6% | 4.5% |
| Age 85 and over | 0.9% | 3.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Downing, MO | Mexico, ME | United States |
| White | 99.3% | 95.9% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.7% | 0.0% | 3.2% |
| Hispanic | 0.0% | 4.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Downing, MO | Mexico, ME | United States |
| Married Population | 32.7% | 64.9% | 49.8% |
| Currently Married | 31.9% | 64.9% | 48.0% |
| Married but Separated | 0.8% | 0.0% | 1.8% |
| Single Population | 67.3% | 35.1% | 50.2% |
| Never Married | 41.5% | 16.4% | 33.8% |
| Divorced | 19.4% | 16.1% | 10.8% |
| Widowed | 6.4% | 2.6% | 5.6% |
| space5 | | | |
| Household Size | 3.57 | 2.40 | 2.60 |
| Households | 129 | 1,136 | 124,010,992 |
| Family Households | 58 | 752 | 80,755,759 |
| Married couple, w/children | 29.3% | 24.5% | 30.5% |
| Married couple, no children | 48.3% | 66.5% | 42.9% |
| Non Family Households | 71 | 384 | 43,255,233 |
| Single householder, w/children | 22.4% | 4.5% | 15.8% |
| Single householder, no children | 0.0% | 4.5% | 10.8% |