| | Lyons, OR | Mehama, OR | United States |
| Population | 1,247 | 409 | 329,725,481 |
| Female Population | 45.3% | 47.9% | 50.5% |
| Male Population | 54.7% | 52.1% | 49.5% |
| Median Age | 59.2 | 42.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,162 | 250 | 309,327,143 |
| Population - 2000 | 1,008 | 283 | 285,036,114 |
| Population - 1990 | 938 | 244 | 251,960,433 |
| Pop. 2000 to Now | 28.1% | -46.3% | 15.6% |
| Pop. 1990 to Now | 37.6% | -37.7% | 30.8% |
| space4 | | | |
| Population Density | 1,435.0 | 893.0 | 93.4 |
| Land Area | 0.9 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lyons, OR | Mehama, OR | United States |
| Age 0 to 4 | 2.6% | 8.8% | 5.9% |
| Age 5 to 9 | 3.4% | 3.4% | 6.1% |
| Age 10 to 14 | 3.7% | 3.4% | 6.6% |
| Age 15 to 17 | 0.9% | 0.0% | 3.9% |
| Age 18 to 20 | 2.2% | 0.0% | 4.0% |
| Age 21 to 24 | 2.2% | 1.7% | 5.2% |
| Age 25 to 34 | 7.7% | 8.3% | 13.8% |
| Age 35 to 44 | 6.6% | 25.4% | 12.9% |
| Age 45 to 54 | 11.6% | 4.2% | 12.6% |
| Age 55 to 59 | 10.6% | 6.8% | 6.7% |
| Age 60 to 64 | 13.3% | 24.7% | 6.3% |
| Age 65 to 74 | 30.2% | 10.8% | 9.6% |
| Age 75 to 84 | 5.1% | 2.4% | 4.5% |
| Age 85 and over | 0.0% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lyons, OR | Mehama, OR | United States |
| White | 79.7% | 90.5% | 59.4% |
| Black | 0.2% | 0.0% | 12.2% |
| Asian | 0.6% | 0.0% | 5.6% |
| Native American | 0.0% | 4.4% | 0.6% |
| Hawaiian, Pacific Islander | 1.1% | 0.0% | 0.2% |
| Other | 2.5% | 0.0% | 0.4% |
| Two or More Races | 12.6% | 5.1% | 3.2% |
| Hispanic | 3.3% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lyons, OR | Mehama, OR | United States |
| Married Population | 66.5% | 57.4% | 49.8% |
| Currently Married | 65.1% | 57.4% | 48.0% |
| Married but Separated | 1.4% | 0.0% | 1.8% |
| Single Population | 33.5% | 42.6% | 50.2% |
| Never Married | 15.6% | 14.2% | 33.8% |
| Divorced | 12.7% | 25.5% | 10.8% |
| Widowed | 5.2% | 2.9% | 5.6% |
| space5 | | | |
| Household Size | 2.15 | 2.26 | 2.60 |
| Households | 580 | 181 | 124,010,992 |
| Family Households | 405 | 114 | 80,755,759 |
| Married couple, w/children | 16.3% | 15.8% | 30.5% |
| Married couple, no children | 74.1% | 66.7% | 42.9% |
| Non Family Households | 175 | 67 | 43,255,233 |
| Single householder, w/children | 2.7% | 10.5% | 15.8% |
| Single householder, no children | 6.9% | 7.0% | 10.8% |