| | Montana, WI | Oregon, OH | United States |
| Population | 289 | 19,935 | 329,725,481 |
| Female Population | 50.5% | 51.4% | 50.5% |
| Male Population | 49.5% | 48.6% | 49.5% |
| Median Age | 51 | 45.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 284 | 20,321 | 309,327,143 |
| Population - 2000 | 306 | 19,355 | 285,036,114 |
| Population - 1990 | 316 | 18,334 | 251,960,433 |
| Pop. 2000 to Now | -8.5% | 3.4% | 15.6% |
| Pop. 1990 to Now | -11.4% | 9.2% | 30.8% |
| space4 | | | |
| Population Density | 6.1 | 693.3 | 93.4 |
| Land Area | 47.1 | 28.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Montana, WI | Oregon, OH | United States |
| Age 0 to 4 | 4.2% | 3.9% | 5.9% |
| Age 5 to 9 | 6.6% | 3.9% | 6.1% |
| Age 10 to 14 | 5.2% | 6.1% | 6.6% |
| Age 15 to 17 | 5.5% | 4.9% | 3.9% |
| Age 18 to 20 | 3.1% | 3.1% | 4.0% |
| Age 21 to 24 | 1.7% | 4.3% | 5.2% |
| Age 25 to 34 | 8.0% | 12.6% | 13.8% |
| Age 35 to 44 | 10.7% | 11.0% | 12.9% |
| Age 45 to 54 | 15.9% | 12.1% | 12.6% |
| Age 55 to 59 | 8.3% | 8.5% | 6.7% |
| Age 60 to 64 | 12.8% | 7.9% | 6.3% |
| Age 65 to 74 | 12.5% | 11.6% | 9.6% |
| Age 75 to 84 | 4.8% | 6.6% | 4.5% |
| Age 85 and over | 0.7% | 3.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Montana, WI | Oregon, OH | United States |
| White | 99.7% | 85.8% | 59.4% |
| Black | 0.0% | 2.0% | 12.2% |
| Asian | 0.0% | 1.2% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.3% | 1.9% | 3.2% |
| Hispanic | 0.0% | 8.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Montana, WI | Oregon, OH | United States |
| Married Population | 59.7% | 51.3% | 49.8% |
| Currently Married | 59.7% | 50.4% | 48.0% |
| Married but Separated | 0.0% | 0.9% | 1.8% |
| Single Population | 40.3% | 48.7% | 50.2% |
| Never Married | 20.2% | 28.5% | 33.8% |
| Divorced | 15.6% | 11.6% | 10.8% |
| Widowed | 4.5% | 8.6% | 5.6% |
| space5 | | | |
| Household Size | 2.83 | 2.37 | 2.60 |
| Households | 102 | 8,274 | 124,010,992 |
| Family Households | 77 | 5,441 | 80,755,759 |
| Married couple, w/children | 29.9% | 26.2% | 30.5% |
| Married couple, no children | 64.9% | 49.1% | 42.9% |
| Non Family Households | 25 | 2,833 | 43,255,233 |
| Single householder, w/children | 5.2% | 11.3% | 15.8% |
| Single householder, no children | 0.0% | 13.3% | 10.8% |