| | Hysham, MT | Lavina, MT | United States |
| Population | 227 | 168 | 329,725,481 |
| Female Population | 47.1% | 53.6% | 50.5% |
| Male Population | 52.9% | 46.4% | 49.5% |
| Median Age | 61.4 | 43 | 38.4 |
| space3 | | | |
| Population - 2010 | 312 | 181 | 309,327,143 |
| Population - 2000 | 330 | 209 | 285,036,114 |
| Population - 1990 | 361 | 151 | 251,960,433 |
| Pop. 2000 to Now | -7.0% | -19.6% | 15.6% |
| Pop. 1990 to Now | -15.0% | 11.3% | 30.8% |
| space4 | | | |
| Population Density | 1,036.5 | 166.2 | 93.4 |
| Land Area | 0.2 | 1.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hysham, MT | Lavina, MT | United States |
| Age 0 to 4 | 7.9% | 0.0% | 5.9% |
| Age 5 to 9 | 1.8% | 1.8% | 6.1% |
| Age 10 to 14 | 4.8% | 6.5% | 6.6% |
| Age 15 to 17 | 0.0% | 3.6% | 3.9% |
| Age 18 to 20 | 1.8% | 9.5% | 4.0% |
| Age 21 to 24 | 7.0% | 6.0% | 5.2% |
| Age 25 to 34 | 6.2% | 4.8% | 13.8% |
| Age 35 to 44 | 2.2% | 19.0% | 12.9% |
| Age 45 to 54 | 11.5% | 12.5% | 12.6% |
| Age 55 to 59 | 4.0% | 6.5% | 6.7% |
| Age 60 to 64 | 16.7% | 10.7% | 6.3% |
| Age 65 to 74 | 18.5% | 11.9% | 9.6% |
| Age 75 to 84 | 13.7% | 6.5% | 4.5% |
| Age 85 and over | 4.0% | 0.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hysham, MT | Lavina, MT | United States |
| White | 94.3% | 70.8% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.4% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 2.4% | 0.4% |
| Two or More Races | 0.0% | 20.2% | 3.2% |
| Hispanic | 5.3% | 6.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hysham, MT | Lavina, MT | United States |
| Married Population | 56.7% | 42.9% | 49.8% |
| Currently Married | 56.7% | 40.3% | 48.0% |
| Married but Separated | 0.0% | 2.6% | 1.8% |
| Single Population | 43.3% | 57.1% | 50.2% |
| Never Married | 11.9% | 38.3% | 33.8% |
| Divorced | 19.1% | 14.3% | 10.8% |
| Widowed | 12.4% | 4.5% | 5.6% |
| space5 | | | |
| Household Size | 1.97 | 2.33 | 2.60 |
| Households | 115 | 72 | 124,010,992 |
| Family Households | 71 | 34 | 80,755,759 |
| Married couple, w/children | 7.0% | 17.6% | 30.5% |
| Married couple, no children | 66.2% | 58.8% | 42.9% |
| Non Family Households | 44 | 38 | 43,255,233 |
| Single householder, w/children | 18.3% | 0.0% | 15.8% |
| Single householder, no children | 8.5% | 23.5% | 10.8% |