| | Lander, WY | Dubois, WY | United States |
| Population | 7,551 | 688 | 329,725,481 |
| Female Population | 52.6% | 45.8% | 50.5% |
| Male Population | 47.5% | 54.2% | 49.5% |
| Median Age | 37.8 | 58.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 7,618 | 985 | 309,327,143 |
| Population - 2000 | 6,867 | 962 | 285,036,114 |
| Population - 1990 | 7,023 | 895 | 251,960,433 |
| Pop. 2000 to Now | 8.7% | 0.3% | 15.6% |
| Pop. 1990 to Now | 6.3% | 7.8% | 30.8% |
| space4 | | | |
| Population Density | 804.8 | 197.7 | 93.4 |
| Land Area | 9.4 | 3.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lander, WY | Dubois, WY | United States |
| Age 0 to 4 | 6.4% | 4.2% | 5.9% |
| Age 5 to 9 | 8.4% | 7.0% | 6.1% |
| Age 10 to 14 | 6.6% | 3.5% | 6.6% |
| Age 15 to 17 | 5.0% | 0.0% | 3.9% |
| Age 18 to 20 | 2.1% | 1.5% | 4.0% |
| Age 21 to 24 | 4.7% | 1.3% | 5.2% |
| Age 25 to 34 | 12.2% | 8.0% | 13.8% |
| Age 35 to 44 | 14.1% | 8.6% | 12.9% |
| Age 45 to 54 | 10.9% | 7.6% | 12.6% |
| Age 55 to 59 | 5.0% | 12.8% | 6.7% |
| Age 60 to 64 | 6.2% | 14.5% | 6.3% |
| Age 65 to 74 | 11.1% | 25.7% | 9.6% |
| Age 75 to 84 | 5.7% | 3.6% | 4.5% |
| Age 85 and over | 1.8% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lander, WY | Dubois, WY | United States |
| White | 83.9% | 92.7% | 59.4% |
| Black | 0.5% | 0.6% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 6.4% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.6% | 2.2% | 3.2% |
| Hispanic | 5.5% | 4.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lander, WY | Dubois, WY | United States |
| Married Population | 52.1% | 44.1% | 49.8% |
| Currently Married | 47.9% | 43.1% | 48.0% |
| Married but Separated | 4.1% | 1.0% | 1.8% |
| Single Population | 47.9% | 55.9% | 50.2% |
| Never Married | 31.1% | 21.0% | 33.8% |
| Divorced | 12.0% | 21.8% | 10.8% |
| Widowed | 4.8% | 13.1% | 5.6% |
| space5 | | | |
| Household Size | 2.55 | 1.76 | 2.60 |
| Households | 2,869 | 387 | 124,010,992 |
| Family Households | 1,700 | 163 | 80,755,759 |
| Married couple, w/children | 34.1% | 14.1% | 30.5% |
| Married couple, no children | 44.2% | 61.4% | 42.9% |
| Non Family Households | 1,169 | 224 | 43,255,233 |
| Single householder, w/children | 15.8% | 12.3% | 15.8% |
| Single householder, no children | 5.9% | 12.3% | 10.8% |