| | Camp Sherman, OR | Ennis, MT | United States |
| Population | 281 | 673 | 329,725,481 |
| Female Population | 48.4% | 45.6% | 50.5% |
| Male Population | 51.6% | 54.4% | 49.5% |
| Median Age | 58.4 | 58.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 257 | 839 | 309,327,143 |
| Population - 2000 | 134 | 840 | 285,036,114 |
| Population - 1990 | 79 | 773 | 251,960,433 |
| Pop. 2000 to Now | 106.0% | 24.1% | 15.6% |
| Pop. 1990 to Now | 249.4% | 34.8% | 30.8% |
| space4 | | | |
| Population Density | 89.2 | 911.9 | 93.4 |
| Land Area | 3.2 | 0.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Camp Sherman, OR | Ennis, MT | United States |
| Age 0 to 4 | 14.2% | 0.0% | 5.9% |
| Age 5 to 9 | 4.6% | 6.4% | 6.1% |
| Age 10 to 14 | 3.2% | 0.0% | 6.6% |
| Age 15 to 17 | 1.4% | 0.6% | 3.9% |
| Age 18 to 20 | 0.0% | 0.0% | 4.0% |
| Age 21 to 24 | 0.0% | 0.0% | 5.2% |
| Age 25 to 34 | 10.7% | 11.6% | 13.8% |
| Age 35 to 44 | 7.8% | 14.9% | 12.9% |
| Age 45 to 54 | 4.6% | 15.9% | 12.6% |
| Age 55 to 59 | 5.3% | 5.6% | 6.7% |
| Age 60 to 64 | 11.0% | 11.3% | 6.3% |
| Age 65 to 74 | 23.1% | 20.5% | 9.6% |
| Age 75 to 84 | 13.5% | 6.8% | 4.5% |
| Age 85 and over | 0.4% | 6.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Camp Sherman, OR | Ennis, MT | United States |
| White | 75.4% | 94.1% | 59.4% |
| Black | 0.0% | 0.3% | 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% | 2.1% | 0.4% |
| Two or More Races | 5.3% | 0.0% | 3.2% |
| Hispanic | 19.2% | 3.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Camp Sherman, OR | Ennis, MT | United States |
| Married Population | 83.6% | 50.6% | 49.8% |
| Currently Married | 83.6% | 46.8% | 48.0% |
| Married but Separated | 0.0% | 3.8% | 1.8% |
| Single Population | 16.4% | 49.4% | 50.2% |
| Never Married | 5.5% | 25.6% | 33.8% |
| Divorced | 8.7% | 15.4% | 10.8% |
| Widowed | 2.3% | 8.4% | 5.6% |
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| Household Size | 2.46 | 1.74 | 2.60 |
| Households | 114 | 366 | 124,010,992 |
| Family Households | 94 | 132 | 80,755,759 |
| Married couple, w/children | 10.6% | 18.9% | 30.5% |
| Married couple, no children | 79.8% | 81.1% | 42.9% |
| Non Family Households | 20 | 234 | 43,255,233 |
| Single householder, w/children | 9.6% | 0.0% | 15.8% |
| Single householder, no children | 0.0% | 0.0% | 10.8% |